# Printed Circuit Design Tutorial

Save this PDF as:

Size: px
Start display at page:

## Transcription

1 Printed Circuit Design Tutorial By Gold Phoenix Technology Tech Center, Gold Phoenix has been sale PCB board in North America since 2003, during these years we received a lot of questions from different customers about PCB designs, and customers also make some common mistakes. Finally we think that it is better to write a tutorials to cover some basic rules, tips, techniques in PCB designs. Hope this tutorial can help our customer to improve their PCB design skills. There is three sections in this paper, 1) Basic rules in PCB design, 2) Explain some basic technology in PCB manufacture 3) Prepare the files for PCB house. I. BASIC RULES IN PCB DESIGN When you first begin to design PCB you need to setup some rules A. The size and shape of the PCB: The best way to define the size and shape of the PCB is use mechanical layers as shown in Fig 1. The inner cuts can also be defined on the mechanical layers, just make sure when you generate the Gerber files SELECT THE mechanical layers, otherwise your gerber files will not have border. Fig 1 Border of the PCB 1

2 You can also draw the border on the silk screen layer, but if you have inner cut then you need to be careful. If you draw the inner cuts on the silk layer that will be very confuse for us. Since we will consider it is a text symbol. In this case what you can do is shown in Fig 2, put text CUT OUT in the silk box. But define the PCB shape on the mechanical layer is till the professional way. The outline tolerance by routing is +/-6mil. Fig 2 Define cut out in silk layer B. Define the design rules for the PCB After define the PCB shape the next step is to define the design rules. Most of the PCB software can define those design rules before the PCB layout, then you can make sure the PCB is designed in the right specification. 1) Min clearance& Min hole size Min clearance means space between different networks. Usually if you want design a low cost PCB setup the clearance 7mil-10mil, and we suggest>=10mil. One example is shown in Fig 3 2

3 Fig 3 Define the Minimum clearance When you use the via make sure the min hole size is>10mil, for a low cost PCB the via diameter>15mil and the pad around the via diameter >23mil, which will give a min ring of 8mil. One example is shown in Fig 4. If space is not a problem always try to have a min 15mil hole and 10mil ring. Fig 4 Define the via and ring 3

4 There is only min size limitation, so it is not a problem to define a larger clearance or hole size. The definition hole size is the finished hole size in the PCB and has a +/-3-5mil tolerance. Trace width on the final PCB will has tolerance +/-15%-20%. You can also define other design rules some rules are shown in Fig 5, and those rules will not be explained one by one. Most of time we only need to define the electrical rules and use default setting for other rules. Fig 5 Other rules for the PCB design II. BASIC TECHNOLOGIES IN PCB MANUFACTURE In this section we will discuss some basic technologies used in PCB manufacture. A. V Score Most of the time we just need individual board, but to increase the efficiency of assembly, or when the board is too small (X,Y dimension less than 1inch ), then we need panelize the 4

5 small boards to improve manufacturing efficiency. Fig 6 shows a drawing for a V score panel. The clearance between boards is 30mil.Usually we keep the V score clearance 20-40mil. V core can only be used for regular shape board. And the tolerance is +/-6-8mil. In the panel usually we will add a 0.25 blank material around the panel which is called carriers, on the carriers 4 tooling holes and four fiducial marks will be added, this feature is useful for PCB assembly. V cut V cut V cut V cut V cut 3 0 m il Fig 6 V score panels Fig 7 Photo of a V score PCB B. Tab-routing When the board has irregular shape, or the board need a clear edge then the panel need be tab-routed. Fig 8 shows a drawing for the tab-routing panel, Fig 9 is the photo of the tab-routing panel. In the tab-routing panel in order to break the board off the panel after assembly, V score or mouse bite holes can be used. Mouse bite holes is a line of holes works the same way as holes on array of stamps. But keep in mind V score will give a clear edge after the boards are break away from the panels, mouse bite holes will not give a clear 5

6 edge. Fig 8 Tab-routing panel Fiducial Mark Fig 9 Photo of a tab-routing panel 6

7 C. Define Non-plated holes(npth) There are several ways to define the non-plated holes in the PCB. 1) You can define certain hole size to be used as non-plated holes. For example you can define all 40mil holes in your design to be non-plated, and tell the PCB house you want all 40mil hole to be NPTH 2) You can generate separate NC drill files for NPTH holes. 3) The most professional way is to generate a draw chart as shown in Fig 10. Fig 10 Hole Chart D. PCB finishing The Plain copper on a printed circuit board oxidizes rapidly and has to be coated or plated with something to allow and maintain good solder ability. In the early years protective lacquers were used, roller Tinning quickly followed on along with Hot Air Solder Leveling (HAL; HASL), and the range of chemical finishes. In this section some regular finishing will be introduced. 1. HAL or Lead Free HAL (ROHS). In this process the boards are fluxed then dipped into a large vertical solder tank. After which the excess solder is blown off with high temperature compressed air. This process produces a flat solder finish suitable for surface mount components. Hot Air Solder Leveling produces one of the most stable end finishes with very good long term solder-ability. The shelf life of HAL usually can go up to be a few years. Lead free HAL actually works the same way as HAL, the only difference is that lead-free alloys are used in 7

8 the process. Usually Lead free HAL will have a higher melt temp compared with regular leaded solders. So if lead free HAL is used as finishing which means that the material used to manufacture PCB will need to with stand have a much higher temp stress. For FR4 with Tg140 usually the max temp is 280 degree for 20 second, Tg170 will can works at 260 degree for 30 minutes. Of course the cost for TG170 material is higher, roughly 30% more than Tg140 material. Tg140 can be used in the lead free HAL process, but need works within its temp specification otherwise copper can lift up. 2. Immersion silver The immersion silver finish provides a ROHS compliant finish for printed circuit boards (PCB) but is thinner than ENIG or traditional HASL finishes. Immersion silver is a newer PCB finish that offers better performance and superior finishes for final finishes on PCBs. In this process silver is deposited directly on the copper surface by a chemical displacement reaction and is available in the industry all co-deposit and organic anti tarnish with the immersion silver. This reaction is fast and does not require the relatively high temperatures of ENIG. During assembly the immersion silver dissipates into the solder and allows the formation of a Cu/Sn intermetallic. Immersion silver is an active surface and readily combines with sulfur from the environment. Silver sulfide tarnishes the surface and creates doubt about the integrity of the finish. The proper packaging of immersion silver finished boards are critical to control sulfurization. The key is to minimize contact of the surface with the environment and to ensure all materials used in the packaging and during storage are sulfur free. Compared with HAL finishing, immersion silver offers a prefect flat surface and it is more popular in RF applications than HAL. 3. Gold Finishing (Electroless Nickel Immersion Gold) Electroless nickel immersion gold (ENIG) is a type of surface plating used for printed circuit boards. It consists of electroless nickel plating covered with a thin layer of immersion gold, which protects the nickel from oxidation. The thickness of gold during this process usually is 3-5 micro inch, the thickness of Nick is around micro inch. 8

12 technique that uses a woven mesh to support an ink-blocking stencil. The attached stencil forms open areas of mesh that transfer ink or other printable materials which can be pressed through the mesh as a sharp-edged image onto a substrate. A roller or squeegee is moved across the screen stencil, forcing or pumping ink past the threads of the woven mesh in the open areas. For the PCB designer what you really need care is the color of the silk screen, you need one side silk screen or two side silk screen. With gold phoenix we offer white silk screen and one side silk (top side or bottom side) silk by default. Two side silk screen( print text on both top and bottom side) will result extra charge. Another thing you maybe should know is the min size of the silk screen the PCB manufacture can support. With gold phoenix the min text size we support is height 25mil, width 6mil. Small text size make it difficult to read, the min text size we suggest is width 6mil, height 50mil. G. Copper thickness and Via current handling capacity In PCB industry the thickness of the copper on the PCB is defined use oz. 1oz=35um. Thicker copper means the trace and pass more current. This PCB track width calculator determines approximations to the ANSI/IPC-D-275 and IPC-2221 design standards for PCB trace / track width. W = where: 1 I ( )( 1.4h k T ) W = Minimum required track width in mils I = Maximum current in Amps dt = Maximum allowable temperature rise above ambient in C h = Thickness of the copper cladding in oz/ft^2 k = for inner layers and k= for outer layers This calculator is accurate up to 35A current, up to 400mils of trace width, from 10C to 100C temperature rise, and copper of 0.5oz/ft to 3oz/ft. Outside of this ranges, calculator won't produce accurate results. The DC resistance of the trace can be calculated as below: for 12

13 copper at 25 degree p=1.724x10-8ohm/meter, at 100 degree p=2.3x10-8ohm/meter. AC resistance is more complex due to skin effect. R DC = p L A 0.5oz Copper Current (A) 1oz Copper Current (A) Trace Width (mm) Trace Width (mm) Trace Width (mm) Trace Width (mm) 2oz Copper Current (A) 3oz Copper Current (A) Fig 14 Current Handling Capacity of PCB Trace. Fig 14 shows the current handling capacity of 0.5oz-3oz copper with different temp raise. H. Via To estimate via current handling capacity, a via can be equivalent to a trace. 13

14 Current m m =5 8.7m il 1.6mm=62mil 1.6m m=6 2m il m m =1m il m m =1 8 m il 0.5m m =2 0 m il Fig 15 Via in PCB Board equivalent to PCB trace. Fig 15 shows a via in the PCB. The current will follow through this via from top layer to the bottom layer. There is a 1mil copper plated in the via, this via can be equivalent to a trace with 1.6mm in length, 14.9mm width and 1mil copper thickness. Use the info from section F. the current handling capacity of this Via can be calculated, 2A is the result. The resistance of the Via can be calculated use following equation, and the result is 0.98mohm at 100 degree, and a 2A current will result a 2mV voltage drop. To increase the current handling capacity a multi via can be place in parallel to reduce the resistance. R DCVia = p π( r 2 1 L r 2 2 ) = 2.3X * * ( ) I. Slot Slot design can be a headache for a new PCB designer. The major problem for a PCB designer is that you need to make sure the PCB manufacture KNOW that there are slots in your design. The easiest way to design a slot is to use multi via overlap with each other to 14

15 make a slot in the shape you want. In this way the slot will be show up in the NC drill file, as long as you generate the NC drill files right you should be able to see the slot in your design. Fig 16 Make slot by using Vias overlap with each other Fig 16 shows two slots by using vias overlap with each other. With gold phoenix the min slot size we can make is 0.65mmX0.7mm. J. Voltage break points There is an Experiments performed by UL in the course of analysis of silver PCB surface finish, demonstrated that the withstand voltage of a pair of parallel conductors is purely a function of conductor spacing, not surface finish. Based on the experiments, UL specified withstand voltage of 40 volts/mil or about 1.6 kw/mm in their test methods of UL796 Standard for Printed Wiring Boards. For example, for working voltage 500V you need to meet the withstanding test voltage 1740 Vrms per UL Table 5B. Such AC signal has 1740* 2=2461 V peak value. With the 40V/mils criterion, the required minimum spacing would be 2461/40=62 mils (or 1.6 mm). More info can be found at 15

16 Fig 17 Clearance requirement of voltage level K. Half hole design Half PTH holes are usually designed at the edge of the board, the holes are plated. The way to design this is just to put the holes at the edge of the board, and put the border line across the middle of the holes. The min hole size will need to be 0.8mm (32mil), the min clearance between the holes need to be 1.1mm from the center from one hole to another. There is no requirements for the size of the pads, you can design the pads the same size as the hole. 1.1m m (4 4 m il) Border of the Board 0.8m m (3 2 m il) Fig 18 Half Hole Design Example 16

17 III. PREPARE MANUFACTURE FILES FOR PCB HOUSE The most common problem when generate gerber files is that our customer did not include all necessary files. For 2 layers you should include : Top copper layers, Bot copper layer, Top Silk Screen, Bot Silk Screen(if you have), Top Solder Mask, Bot Solder Mask. And NC drill files. If the board is multi-layers, you also need to include inner layers in the gerber file. Each layer will be one file, so for 2 layers you will have 5-6 files plus NC drill. If you define the border of the board use mechanical layers please also include ship layer in the gerber file. Each layer should have a unique extension, below give some example. TopCopper - ".gtl", ".cmp", ".top" BottomCopper - ".gbl", ".sol", ".bot" TopSolderMask - ".gts", ".stc", ".smt", ".stoptop", ".tsm" BottomSolderMask - ".gbs", ".sts", ".smb", ".stopbot", ".bsm" TopSilk - ".gto", ".plc", ".sst", ".positop", ".leg", ".slk" BottomSilk - ".gbo", ".pls", ".ssb", ".posibot", ".bsk" Drill - ".drl", ".txt", ".tap", ".drill", ".gdd", ".drd", ".cnc", ".exl" KeepOut - ".gko" MiddleCopper1 - ".g2" MiddleCopper2 - ".g3" BottomStencil - ".gbp" TopStencil - ".gtp" Outline - ".outline", ".oln" For gold phoenix we need gerber files in 274X format. After you generate the gerber files use a free gerber view to check the file, make sure the file looks right. Keep in mind gerber files sometimes does not look the same as your PCB files, so it is 100% necessary to check the files before you send the files to the board house to place order. After the gerber files and NC drill is done, put zip the all files into one ZIP file, and name the file use the same name as your project name. We suggest do not name the file name as gerber or panel, those files are too common. If there is any version change also change the file name and add the version to the file name. In this way it will make it a lot easier when you want order the same board again, otherwise after a few months if you have too many version 17

18 everything will mass up. Different PCB software will have different steps to generate gerber files, what you really need to keep in mind is that: IN INCLUDE ALL LAYERS YOU WANT, SELECT 274X FORMAT, INCLUDE NC DRILL FILE. Finally we would hope this tutorial is helpful for you. If you have any questions please us Gold Phoenix Technology Ltd Web: Direct: Fax :

### How to Build a Printed Circuit Board. Advanced Circuits Inc 2004

How to Build a Printed Circuit Board 1 This presentation is a work in progress. As methods and processes change it will be updated accordingly. It is intended only as an introduction to the production

### CAPABILITIES Specifications Vary By Manufacturing Locations

Revised June 2011 Toll Free: 1-800-979-4PCB (4722) www.4pcb.com sales@4pcb.com Material FR4 RoHS RF Materials CAPABILITIES Specifications Vary By Manufacturing Locations Number of Conductive Layers Standard

### PRINTED CIRCUIT BOARD SURFACE FINISHES - ADVANTAGES AND DISADVANTAGES

PRINTED CIRCUIT BOARD SURFACE FINISHES - ADVANTAGES AND DISADVANTAGES By Al Wright, PCB Field Applications Engineer Epec Engineered Technologies Anyone involved within the printed circuit board (PCB) industry

### Design Considerations for Metal Core Printed Circuit Board

The Way Too Cool Design Considerations for Metal Core Printed Circuit Board Designing an aluminium board is similar to a traditional FR-4 board in terms of imaging and wet processing operations. But you

### PCBs are available with following thicknesses 1.00 mm 1.55 mm 2.40 mm Please don t hesitate to contact us if you have other requests.

Material We use FR4 Material with a TG of 135. Printed circuit boards consist of a non electrical substrate where one or two copper foils are laminated on. The substrate of FR4 consists of a glass fiber

### Count on Optima Technology Associates to meet your requirements

Since 1995, Global Resources, Local Support When you need quality Printed Circuit Boards To Spec On Time On Budget Count on Optima Technology Associates to meet your requirements Optima Technology Associates,

### Good Boards = Results

Section 2: Printed Circuit Board Fabrication & Solderability Good Boards = Results Board fabrication is one aspect of the electronics production industry that SMT assembly engineers often know little about.

### Surface Finishes for High-Speed PCBs

column BEYOND DESIGN Surface Finishes for High-Speed PCBs by Barry Olney The Nickel Doesn t Make Cents! PCB surface finishes vary in type, price, availability, shelf life, assembly process and reliability.

### Rogers 3003, 3006, 3010, 3035, 3203, 3206, 3210

Stocked Materials: RIGID STANDARD FR4 High Tg 170c Black FR4 Polyclad 370HR (Lead Free) HIGH RELIABILITY Polyimide (Arlon 85N, Isola P96) BT (G200) HIGH FREQUENCY: Park Nelco 4000-13, 4000-13si Getek Gore

### Order steps & the meaning of the options:

Readme before ordering PCB online V1.3.3 Content Order steps & the meaning of the options:... 1 PCB specification... 5 Order steps & the meaning of the options: First. Choose The right quantity of the

### PCB Board Design. PCB boards. What is a PCB board

PCB Board Design Babak Kia Adjunct Professor Boston University College of Engineering Email: bkia -at- bu.edu ENG SC757 - Advanced Microprocessor Design PCB boards What is a PCB board Printed Circuit Boards

### Introduction to Photolithography Concepts via printed circuit board (PCB) manufacturing. PCB Background Information (courtesy of Wikipedia)

Introduction to Photolithography Concepts via printed circuit board (PCB) manufacturing Introduction As you saw on the video (http://www.youtube.com/watch?v=9x3lh1zfggm), photolithography is a way to nanomanufacture

### DRIVING COST OUT OF YOUR DESIGNS THROUGH YOUR PCB FABRICATOR S EYES!

4/3/2013 S THROUGH YOUR PCB FABRICATOR S EYES! Brett McCoy Eagle Electronics Schaumburg IL. New England Design and Manufacturing Tech Conference Brett McCoy: Vice President / Director of Sales Circuit

### Printed Circuit Board - PCB presentation

Printed Circuit Board - PCB presentation PCB application P&A supplies customer with Quick Turn Prototype, Small and Medium-volume PCBs. The PCBs can be widely used in communication product, eg. Bluetooth,

### Multi-Flex Circuits Aust.

Contents: Base Materials Laminate Prepreg Panel Size (Utilization) Multilayer Layup N.C. Drilling Pattern design Impedance control Solder mask type Legend PCB Finishing Gold Plating Profiling Final testing

### Surface Finishes. The PCB surface finish forms a critical interface between the component to be assembled and the bare printed circuit board.

Surface Finishes i Overview: The PCB surface finish forms a critical interface between the component to be assembled and the bare printed circuit board. The surface finish has two essential functions:

### Flex Circuit Design and Manufacture.

Flex Circuit Design and Manufacture. Hawarden Industrial Park, Manor Lane, Deeside, Flintshire, CH5 3QZ Tel 01244 520510 Fax 01244 520721 Sales@merlincircuit.co.uk www.merlincircuit.co.uk Flex Circuit

### Solutions without Boundaries. PCB Surface Finishes. Todd Henninger, C.I.D. Sr. Field Applications Engineer Midwest Region

Solutions without Boundaries PCB Surface Finishes Todd Henninger, C.I.D. Sr. Field Applications Engineer Midwest Region 1 Notice Notification of Proprietary Information: This document contains proprietary

### South Bay Circuits. Manufacturability Guidelines. Printed Circuit Boards FOR. South Bay Circuits, Inc. 99 N. McKemy Ave Chandler, AZ 85226

South Bay Circuits Manufacturability Guidelines FOR Printed Circuit Boards South Bay Circuits, Inc. 99 N. McKemy Ave Chandler, AZ 85226 GL-1007 By: Edward (Eddie) Rocha South Bay Circuits Dear Customer,

### Flexible Circuit Simple Design Guide

Flexible Circuit Simple Design Guide INDEX Flexible Circuit Board Types and Definitions Design Guides and Rules Process Flow Raw Material Single Side Flexible PCB Single Side Flexible PCB (Cover layer

### PCB Design Guidelines

5. PCB legend PCB Design Guidelines 1. Introduction 2. Data format 2.1. General 2.2. Documentation 3. PCB machining 3.1. Drilling (CNC) 3.2. Scoring (CNC) 3.3. Milling (CNC) 3.4. PCB panels 4. Outer layers

### WONDERFUL PCB (HK) LIMITED. -------Introduction

WONDERFUL PCB (HK) LIMITED -------Introduction Introduction Founded in 1996, WONDERFUL PCB (Hong Kong) Co., Ltd is located in Shenzhen, Guangdong province in China and has developed into two production

### Cost Analysis of Printed Circuit Board

Cost Analysis of Printed Circuit Board By Gold Phoenix s North America Service and Tech Center Team Abstract: With the development of modern technology, PCBs are widely used; and with the cost down of

### PCB Design considerations

PCB Design considerations Better product Easier to produce Reducing cost Overall quality improvement 1 PCB design considerations 2 PCB Design to assure optimal assembly Place at least 3 fiducials (global

### Enpirion Application Note General Enpirion Product QFN Package Soldering Guideline

Enpirion Application Note General Enpirion Product QFN Package Soldering Guideline 1.0 - Introduction Altera ENPIRION power converter packages are designed with a plastic leadframe package technology that

### Flexible Printed Circuits Design Guide

www.tech-etch.com/flex Flexible Printed Circuits Design Guide Multilayer SMT Assembly Selective Plating of Gold & Tin-Lead Fine Line Microvias Cantilevered & Windowed Leads 1 MATERIALS CONDUCTOR Copper

### Compliant Terminal Technology Summary Test Report

Engineering Report ER04100 October 5th, 2004 Revision A Copyright Autosplice Inc., September 2004 Table of Contents Summary Overview 3 Compliant Terminal Specifications 3 Test Plan 4 Test Conditions 4

### HARDWARE DESIGN FUNDAMENTALS. George Hadley 2016, Images Property of their Respective Owners.

HARDWARE DESIGN FUNDAMENTALS George Hadley 2016, Images Property of their Respective Owners. OUTLINE PCB Design Objective PCB Manufacturing Process Design Automation Tools The Design Process Parts Schematics

### FABRICATION 2011 SERVICES TECHNOLOGIES CAPABILITIES INDUSTRY

FABRICATION 2011 SERVICES 24HRS - 5 DAYS ON QUICK TURN PROTOTYPE Dear Customer, We would like to take this opportunity to welcome you and thank you for looking to ASA PCB as your Printed Circuit Manufacturing

### Thermal Management Solutions for Printed Circuit Boards used in Digital and RF Power Electronics and LED assemblies

Thermal Management Solutions for Printed Circuit Boards used in Digital and RF Power Electronics and LED assemblies Sandy Kumar, Ph.D. Director of Technology American Standard Circuits, Inc 3615 Wolf Road

### Cost-cutting online prototype & small batch PCB services

Cost-cutting online prototype & small batch PCB services Eurocircuits a new generation of online PCB services Low prices Order-pooling technology (combining several customers' orders on standard manufacturing

### SCREEN PRINTING INSTRUCTIONS

SCREEN PRINTING INSTRUCTIONS For Photo-Imageable Solder Masks and Idents Type 5600 Two Part Solder Masks and Idents Mega Electronics Ltd., Mega House, Grip Industrial Estate, Linton, Cambridge, ENGLAND

### PCB design Support for Coaxial connector

RF-14547-02 PCB design Support for Coaxial connector Oct 2015 Hirose Electric Co., Ltd. 1 Outline Introduction Mechanical performance Products Specifications Electrical performance PCB design considerations

### RF/Microwave PCB manufacturing capability. Offering RF & Microwave Value-Added Services for Demanding Applications

RF/Microwave PCB manufacturing capability Offering RF & Microwave Value-Added Services for Demanding Applications RF/Microwave PCB Manufacturing Capability Contents Introduction 2 Materials 3 Board Dimensions

### Dynamic & Proto Circuits Inc. Corporate Presentation

Dynamic & Proto Circuits Inc. Corporate Presentation 1 DAPC Facility 54,000 Sq.ft./6,000 Sq.M 2 Multilayer Process 3 Solder Mask Options BLUE BLACK RED GREEN DRY FILM CLEAR 4 Investing in Technology New

### HKPCA Journal No. 12. Promoting Proper Solderability: PCB Fabrication Issues Which Can Impact Solderability

Promoting Proper Solderability: PCB Fabrication Issues Which Can Impact Solderability By : MacDermid Final Finish Team MacDermid Inc. During the worldwide introduction and acceptance of Sterling Silver

### Aspocomp, PCBs for Demanding Applications

HDI PIIRILEVYT Aspocomp, PCBs for Demanding Applications Automotive Electronics Industrial Electronics Mobile Devices Base Station Photos ABB, Aspocomp, Vacon and Wabco PCBs for Base Stations and Other

### DESIGN GUIDE Version 1.4. Design Guide for High Current Solutions with WIRELAID

DESIGN GUIDE Version 1.4 Design Guide for High Current Solutions with WIRELAID High Current Solutions with WIRELAID Technology Your benefit Caused by the increasing requirements of power and digital control

### CHAPTER 5. OVERVIEW OF THE MANUFACTURING PROCESS

CHAPTER 5. OVERVIEW OF THE MANUFACTURING PROCESS 5.1 INTRODUCTION The manufacturing plant considered for analysis, manufactures Printed Circuit Boards (PCB), also called Printed Wiring Boards (PWB), using

### SURFACE FINISHES. Technical Webinar DELIVERING QUALITY SINCE 1952.

SURFACE FINISHES Technical Webinar DELIVERING QUALITY SINCE 1952. Overview: The printed circuit board surface finish forms a critical interface between the component to be assembled and the bare PCB. The

### How to avoid Layout and Assembly got chas with advanced packages

How to avoid Layout and Assembly got chas with advanced packages Parts and pitch get smaller. Pin counts get larger. Design cycles get shorter. BGA, MicroBGA, QFN, DQFN, CSP packages are taking the design

### FIGURE 1, CROSS SECTION OF A PLATED THROUGH HOLE OR VIA.

ANATOMY OF A PLATED THROUGH HOLE LEE RITCHEY AUGUST 30, 2001 INTRODUCTION This document examines the way a plated through hole is formed in a PCB. The discussion holds whether the hole is used by a signal

### Technical characteristics and design rules of thick film printed ceramic substrates production

Technical characteristics and design rules of thick film printed ceramic substrates production This document describes technological features of printed alumina substrates (PS) production in ELCERAM corp.

### QUASAR ELECTRONICS KIT No. 1015 ELECTRONIC MOSQUITO REPELLER

QUASAR ELECTRONICS KIT No. 1015 ELECTRONIC MOSQUITO REPELLER General Description This simple circuit can prove itself worth many times its value (which is very reasonable anyway) in getting rid of mosquitoes

### 00.037.701 Rigid Printed Circuit Board Requirements

00.037.701 Rigid Printed Circuit Board Requirements Issued by: Engineering Effective Date: 10/8/2015 Rev. D Pg. 1 of 9 Approved: 10/8/2015 8:10 AM - Christy King, Quality Engineer 2.0 OBJECTIVE & SCOPE:

### PRINTED CIRCUIT BOARD DESIGN AND MANUFACTURING CORP.

PRINTED CIRCUIT BOARD DESIGN AND MANUFACTURING CORP. Corporate Information Established in 2004 Headquarter office in San Jose, CA Production factory located in Binh Duong, Vietnam - Center of hi-tech industrial

### COPPER FLEX PRODUCTS

COPPER FLEX PRODUCTS WHY FLEX? Molex ible Printed Circuit Technology is the answer to your most challenging interconnect applications. We are your total solution for ible Printed Circuitry because we design

### LEAD FREE HALOGENFREE. Würth Elektronik PCB Design Conference 2007. Lothar Weitzel 2007 Seite 1

LEAD FREE HALOGENFREE Würth Elektronik PCB Design Conference 2007 Lothar Weitzel 2007 Seite 1 Content Solder surfaces/overview Lead free soldering process requirements/material parameters Different base

### 3835 West Conflans, Irving, Texas 75061 sales@multilayer.com Call Us at (972) 790-0062 Fax (972) 790-0293

Multilayer Technology An AS9100 & ISO 9001:2008 Company Multilayer Technology is a full service PCB provider specializing in high quality, high density, quick turn fabrication for time-critical solutions.

### FLEXIBLE CIRCUITS MANUFACTURING

IPC-DVD-37 FLEXIBLE CIRCUITS MANUFACTURING Below is a copy of the narration for DVD-37. The contents of this script were developed by a review group of industry experts and were based on the best available

### This presentation is courtesy of PCB3D.COM

Printed Circuit Board Design, Development and Fabrication Process This presentation is courtesy of PCB3D.COM Steve Rose Printed Circuit Board Design Engineer Slide 1 Introduction PCB 101 This presentation

### What is surface mount?

A way of attaching electronic components to a printed circuit board The solder joint forms the mechanical and electrical connection What is surface mount? Bonding of the solder joint is to the surface

### Printed Circuit Boards

Printed Circuit Boards Luciano Ruggiero lruggiero@deis.unibo.it DEIS Università di Bologna Flusso di progetto di un circuito stampato 1 Specifications Before starting any design, you need to work out the

### Prototyping Printed Circuit Boards

Prototyping Printed Circuit Boards From concept to prototype to production. (HBRC) PCB Design and Fabrication Agenda Introduction Why PCBs? Stage 1 Understanding the rules Stage 2 Planning the board. Stage

### Company Introduction. Welcome to BEST. bestpcbs.com. http://www.bestpcbs

Company Introduction Welcome to BEST http://www.bestpcbs bestpcbs.com Company Introduction YOUR BEST SOURCE IN ASIA We are dedicated to providing quality, service and value to our customers While maintaining

### Design for Manufacturing

2 Design for Manufacturing This chapter will address the fabrication process of the PCB and the requirements of the manufacturer. Manufacturers are separated by their limitations or constraints into categories

### Optimizing Immersion Silver Chemistries For Copper

Optimizing Immersion Silver Chemistries For Copper Ms Dagmara Charyk, Mr. Tom Tyson, Mr. Eric Stafstrom, Dr. Ron Morrissey, Technic Inc Cranston RI Abstract: Immersion silver chemistry has been promoted

### Dynamic & Proto Circuits Inc. Corporate Presentation

Dynamic & Proto Circuits Inc. Corporate Presentation 1 DAPC Facility 54,000 Sq.ft./6,000 Sq.M 2 Multilayer Process 3 Solder Mask Options BLUE BLACK RED GREEN DRY FILM CLEAR 4 Investing in Technology New

### 24-hour turnaround Premier workmanship Value for money pricing Flexible response Skilled and Experienced Staff

PCB Manufacturer & Assembler In the same facility, under the same roof, by the same company. 24-hour turnaround Premier workmanship Value for money pricing Flexible response Skilled and Experienced Staff

### WONDERFUL PCB (HK) LIMITED. -------Introduction. Wonderful PCB

WONDERFUL PCB (HK) LIMITED -------Introduction Contents Introduction Advantage Certification Capability-PCB Capability-PCBA Factory View Main Product Address and contacts Introduction is professional supplier

### White Paper. Recommendations for Installing Flash LEDs on Flex Circuits. By Shereen Lim. Abstract. What is a Flex Circuit?

Recommendations for Installing Flash LEDs on Circuits By Shereen Lim White Paper Abstract For the mobile market some PCB assemblies have been converted to flex circuit assemblies, in part because flex

### www.eurocircuits.com Page 1

CONTENT INTRODUCTION 2 INPUT DATA FORMATS 3 INPUT DATA REQUIREMENTS 4 CLASSIFICATION 6 HOLES 8 COPPER LAYERS 10 BGAS 12 MECHANICAL LAYER 13 SOLDERMASK 15 LEGEND PRINT 17 CARBON 18 PEEL-OFF MASK 19 VIAFILL

### Webinar HDI Microvia Technology Cost Aspects

Webinar HDI Microvia Technology Cost Aspects www.we-online.com HDI - Cost Aspects Seite 1 1 July, 2014 Agenda - Webinar HDI Microvia Technology Cost Aspects Reasons for the use of HDI technology Printed

What Is PCB? A PCB is a printed circuit board, also known as a printed wiring board. It is used in electronics to build electronic devices. A PCB serves two purposes in the construction of an electronic

### RoHS. Manufacturing with Compliant Lead-free Materials and Finishes. MANUFACTURING INNOVATIONS

RoHS Manufacturing with Compliant Lead-free Materials and Finishes. MANUFACTURING INNOVATIONS THE RoHS DIRECTIVE AND DAPC As a leading manufacturer of high reliability and quality Printed Circuit Boards,

### Process Capability & Tolerance For PCB Manufacturing

& Tolerance For PCB Manufacturing & Tolerance For PCB Manufacturing 1.0 Seq Item Unit 1 Surface Treatment Surface 2 Selective Surface Treatment Tin lead /Leadfree HASL Flash Gold ENIG OSP Immersion Tin

### PCB Surface Treatments

PCB Surface Treatments Definition of surface finish A surface finish can be defined as a coating, either metallic or organic in nature, which is applied to a PCB in order to assure solderability of the

### Pandawill Circuits. Your PCB & PCBA partner in China. PCB Fabrication Parts Sourcing PCB Assembly 1

Pandawill Circuits Your PCB & PCBA partner in China 1 PCB Fabrication Parts Sourcing PCB Assembly 1 Company Profile >10 years: Experience in the PCB manufacture and PCB assembly. >500 Employees: Skilled

### A and M Electronics Contract Manufacturing Circuit Board Assembly 25018 Avenue Kearny Valencia, Ca. 91355 (661) 257-3680 or (800) 923-3058

A and M Electronics Contract Manufacturing Circuit Board Assembly 25018 Avenue Kearny Valencia, Ca. 91355 (661) 257-3680 or (800) 923-3058 "When Quality Counts, Choose A&M Electronics" SMT, BGA, & Through

### Processing parameters of PCBs manufactured by TS PCB Techno-Service S.A.

Processing parameters of PCBs manufactured by TS PCB Techno-Service S.A. Last update: jh 21.09.2015 Table of contents 1. Processing parameters of PCB materials... 3 1.1. Applied laminate types... 3 1.2.

### Historical production of rigid PCB s

Historical production of rigid PCB s The Printed Circuit Board (PCB) The PCB What is a Printed Circuit Board? Green plastic thing with holes!! (green plastic syndrome) Platform for components Image with

### Cost drivers in PCB production

NCAB Group Seminar no. 4 Cost drivers in PCB production NCAB GROUP Cost drivers in PCB production INTRODUCTION Where does the basic costs originate? Customer Customer CAD layout Customer EMS Factory Concept

### Tips for PCB Vias Design

Tips for PCB Vias Design Terms of using this article This article is primarily for internal use in Quick teck PCB design department. Now we decided to open it up publicly. We try to ensure the information

### Figure 1 (end) Application Specification 114 13088 provides application requirements for MICTOR Right Angle Connectors for SMT PC Board Applications

This specification covers requirements for application of MICTOR Vertical Board to Board Plugs and Receptacles designed for pc boards. The connectors have an in row contact spacing on 0.64 [.025] centerlines.

### PCB Land Design and Surface Mount for DFN2x5 Punched Package

Document No. DSMT-0002 Rev. 1 Page: 1/1 PCB Land Design and Surface Mount for DFN2x5 Punched Package Introduction DFN package is a plastic encapsulated package with a copper lead frame substrate. It offers

### Accutron Inc. Fiducial Mark Design Guidelines

Accutron Inc. ACCUTRON INC CONTRACT MANUFACTURER 149 ADDISON ROAD, WINDSOR, CT 06095 PH (860) 683 8300 FAX (860) 683 8301 www.accutroninc.com These guidelines are intended to provide a generic outline

### Technical Note - TN004 PCB Panel Design Guidelines

Technical Note - TN004 PCB Panel Design Guidelines Introduction Note on Dimensions This document provides a set of guidelines that have been developed by Norcott to assist customers in the design of PCB

### Auditing a Printed Circuit Board Fabrication Facility Greg Caswell

Auditing a Printed Circuit Board Fabrication Facility Greg Caswell Introduction DfR is often requested to audit the PCB fabrication process of a customer s supplier. Understanding the process variations

### Work Instruction SUPPLIER PRINTED CIRCUIT BOARD REQUIREMENTS

Revision Date Summary of Change 02/13/15 Edit sections 3.1.5 by removing sign-off requirement. Removed section 3.8 supplier acceptance signature. 08/28/13 Edit wording in section 1.0 and 3.7 08/27/13 Section

### Thermal Clad. Bergquist. White Paper. Things To Consider When Designing Circuits. Cost-Effective Basic Materials For An Optimal Design

Bergquist Thermal Clad White Paper TOOLS FOR AN OPTIMAL DESIGN Things To Consider When Designing Circuits Many factors come into play in circuit design with respect to etching, surface finishing and mechanical

### Bending, Forming and Flexing Printed Circuits

Bending, Forming and Flexing Printed Circuits John Coonrod Rogers Corporation Introduction: In the printed circuit board industry there are generally two main types of circuit boards; there are rigid printed

### Work Instruction SUPPLIER PRINTED CIRCUIT BOARD REQUIREMENTS

Summary of Change Revision Date 05/05/11 Sections 3.3.6 was added, 3.4.1 and 3.4.8 have changed dimensional formats, and 3.6.4-3.6.8 were removed 02/23/11 Changed panel to lot section 3.3.3 02/15/11 Formal

### XG2. Flat Cable Connectors for PCBs. Achieve Total Cost Reduction through High-density Mounting and Reduced Wiring. Terminal Arrangement

Flat Cable Connectors for PCBs XG2 Achieve Total Cost Reduction through High-density Mounting and Reduced Wiring IDC connections allow you to wire all terminals at once without terminating the cable. Can

### Vincotech's Compliant Pin. Application Note. Advantages of Vincotech's Power Modules with Press-fit Technology

Application Note Vincotech's Compliant Pin Advantages of Vincotech's Power Modules with Press-fit Technology Application Note no.: AN_2010-10_001_v05 Table of Contents Revision history:... 3 1 Abstract...

### Power Converter Module Package Process Specification for EN5310, EN5330, and EN5360 Converter Modules

Power Converter Module Package Process Specification for EN5310, EN5330, and EN5360 Converter Modules Introduction This applications note addresses the following topics: PCB Design Recommendations: o Pad

### Application Note: TPH3206LD and TPH3206LS Lead Free 2 nd Level Soldering Recommendations for Vapor Phase Reflow. 1. Package Description

Application Note: TPH3206LD and TPH3206LS Lead Free 2 nd Level Soldering Recommendations for Vapor Phase Reflow 1. Package Description Trasphorm s PQFN (Power Quad Flatpack No Lead) package incorporates

### WELCOME TO VIASION. www.viasion.com

WELCOME TO VIASION www.viasion.com BRIEF INTRODUCTION Viasion Technology Co., Ltd is a professional Printed Circuit Board (PCB) manufacturer in China. With around 1500 employees totally in 2 different

### MULTI-FLEX CIRCUITS AUSTRALIA. International Suppliers of PRINTED CIRCUIT BOARDS

MULTI-FLEX CIRCUITS AUSTRALIA International Suppliers of PRINTED CIRCUIT BOARDS AUSTRALIA Multi-Flex Circuits Australia Leading suppliers of HIGH QUALITY PRINTED CIRCUIT BOARDS for every purpose OUR COMMITMENT

### Small Form- Factor Pluggable (SFP) DWDM

Small Form- Factor Pluggable (SFP) DWDM Application Specification (Dense Wavelength Division Multiplexer) 114-13178 Connector and Cage Assembly 02 MAY 11 Rev F NOTE i All numerical values are in metric

### Molded. By July. A chip scale. and Omega. Guidelines. layer on the silicon chip. of mold. aluminum or. Bottom view. Rev. 1.

Application Note PAC-006 By J. Lu, Y. Ding, S. Liu, J. Gong, C. Yue July 2012 Molded Chip Scale Package Assembly Guidelines Introduction to Molded Chip Scale Package A chip scale package (CSP) has direct

### TAIYO PSR-4000 WT03 (UL Name: PSR-4000JB / CA-40 JB)

TAIYO PSR-4000 WT03 (UL Name: PSR-4000JB / CA-40 JB) LIQUID PHOTOIMAGEABLE SOLDER MASK Screen or Spray Application White Gloss Finish for LED applications RoHS Compliant Compatible with Lead-Free Processing

### IPC-6012A with Amendment 1

ASSOCIATION CONNECTING ELECTRONICS INDUSTRIES IPC-6012A with Amendment 1 Qualification and Performance Specification for Rigid Printed Boards IPC-6012A with Amendment 1 July 2000 A standard developed by

### 08. SEK IDC CONNECTORS

. IDC CONNECTORS connectors for flat cables enable simple and, cost-optimized device configuration. connectors are preferably used for connection within the device. HARTING offers a broad range of these

### How is a PCB made? What determines impedance? John Steinar Johnsen ( Josse ) Sept 2009

How is a PCB made? What determines impedance? John Steinar Johnsen ( Josse ) Sept 2009 Vi kan se hvor Bugatti har hentet inspirasjon fra Denne forsøkte å stikke av, men jeg hang meg på. JossePhoto Manufacturing

### Printed Circuit Boards. EELE 461/561 Digital System Design. Module #4 Interconnect Construction (Printed Circuit Boards) Printed Circuit Boards

Topics EELE 461/561 Digital System Design Module #4 Interconnect Construction (Printed Circuit Boards) 1. Printed Circuit Board Construction 2. Printed Circuit Board Design Textbook Reading Assignments

### 碧 澄 實 業 公 司 BICHENG ENTERPRISE COMPANY

A PCB Solution Provider! 碧 澄 實 業 公 司 BICHENG ENTERPRISE COMPANY 3-203 Shidai Jingyuan, Fuyong, Baoan, Shenzhen, Guangdong 518103, China Tel: 86 755 21949341 Fax: 86 755 27374847 Email: sales@bic-enterprise.com

### Table of Contents. Flex Single-Side Circuit Construction. Rigid Flex Examples. Flex Double-Side Circuit Construction.

Table of Contents Flex Single-Side Circuit Construction Flex Double-Side Circuit Construction Multilayer Flex Circuit Construction Rigid Flex Examples IPC Information Glossary Rigid-Flex Construction Base

### Zeta For Printed Circuit Boards

Zeta For Printed Circuit Boards 1 Technical Support for the family of businesses - Technical Services - Research & Development - Field Installations - Process Development - Process Audits - Defect Analysis