SMD Transient Voltage Suppressors Table of contents

Transcription

1 Table of contents Table of Contents.. - Introduction Transient Suppressors. 3-3 Information for Designer. 4- Multilayer varistor introduction Part number identification 7-7 ML - A Series High surge protection ML - C Series Classification.. 9- CH Series ESD solution protection varistor. 3-3 Array Varistor 4-4 MOV Disc Varistor protection.. - New development item 6-6 Package information Typical application. 8-8 Test information Reliability experiment. - Recommendation for soldering Cross reference

2 Introduction Company Profile SFI, is the trading mark and logo of SFI Groups, which are established under the spiritual concept of Innovation, Services, Quality, and sincerity. There are three subsidiary companies under SFI Groups, including Sun Flower semiconductor Co., Ltd established in Aug 999(known as Sun Flower Instruments Inc. established in 984) is responsible for the production mainly on mono-chip, multilayer chip TVS, advanced varistors etc. and the nearly completed brand factory, Leader Well Technology Co., Ltd for satisfying the tremendous supplies of the worldwide demand on the varistor in the new century, and the mission of SFI Electronics Technology Inc is responsible for the marketing and sales under the independent responsibilities on production, marketing and sales. Advanced Techniques Applied In order to meet the market trend and fast market change, we build our R&D team to control the reliability and stability of the products. We have been utilizing the advanced material and manufacturing techniques on producing the electronic elements and parts. In Taiwan, we are the first company to launch the Zinc Oxide (ZnO) based Ceramic Semiconductor devices with full range and with the highly advanced multilayer formation technologies to apply the high density circuit assemblies. We obtained many kinds of patents and awards for excellent product designs, and had been selected by government to attend the international trade fair on behalf of Taiwan. Our SFI varistors and TVSs reliably protect the electronics systems from overvoltages by limiting surge voltages and by absorbing energy. They are used to safeguard the components, to ensure electromagnetic compatibility and suppress the transients caused by electrostatic discharge. In other words they have the added advantage of greater surge current and energy handling capabilities as well as EMI/RFI attenuation. SFI varistors and TVSs have established themselves as a secure and low-cost means of protection in general-purpose use. 2

3 Transient Suppressor Major Additions and Improvements Multilayer Surface Mount Transient Suppressors (TVS) are manufactured from semiconducting ceramics by the highly advanced multilayer formation technologies, which can offer rugged protection, excellent transient energy absorption and internal heat dissipation. The devices are leadless chip form, eliminating lead inductance and guaranteeing a faster speed of response time of less than 0.ns, which makes them fast enough to ensure reliable protection against ESD pulse and other specific transient events. These transient suppression devices are significantly smaller footprints and lower profiles than traditional zener diodes or radial MOVs, multilayer formation technologies Section of the chip Material:. Body material: ZnO 2. Termination: electrode termination is Ag/Ni/Sn

4 Information for Designer Dependent Characteristic Transient Suppressors(varistors) are voltage-dependent electrical resistors with symmetrical V/I characteristic and the breakdown region, their resistance value decreases with increasing voltage, thus short-circuiting further rises in overvoltage. (V) Breakdown Region Current (A) The Prevention of Overvoltage In other words, as long as the voltage increases above the threshold of the TVS, the suppressor will draws a rapidly increasing current, and then the overvoltage is considerably attenuated away from the protected circuit, that is why the inherent protection of the equipments should be supplemented by including specific components that will raise the withstand capabilities to the required level. Varistors provide protection against all kinds of overvoltage and prevent electronic equipment from being damaged by transient events. Circuit to be Protected Normal State Overvoltages occur Circuit to be Protected Overvoltage State

5 Information for Designer When selecting the TVS for designing within the circuit, some characteristic parameter should be considered carefully to meet the circuit condition. The following guideline are recommended.. The surge handling ability of the selected TVS should meet the need of dissipating the expected transient surge current of the protected circuit. 2. The clamping voltage of the selected TVS should be less than the maximum allowed operating voltage of the protected circuit. 3. In high speed data transmission situation. the capacitance of the selected TVS should be considered. 4. The special requests of the TVS s capacitance such as ESD prevention are available, please contact with us.. While choosing the TVS, the working voltage of the TVS should be greater than or equal to the normal operating voltage of the circuit. INPUT OUTPUT System to be Protected Overvoltage System Max. allowed operating voltage Clamping Level System Rated INPUT OUTPUT 6. Protection Principle : When the voltage increase above the threshold of the varistor, the suppressor draws a rapidly increasing current. The the overvoltage is considerably attenuated. Transient Vc Clamping Transient voltage Transient Current Protected

6 The Introduction of Mutilayer Surface Varistor Feature Full range from 0402 to 32 series Working from 2. to 0 V RMS; 3.3 to Vdc High surge current ability Bidirectional clamping, high energy Fast response time Suitable for ESD Protection Low capacitance design (2.pf) for fast data transmission Array type design Very low leakage current Good solderability. MLC Series: Mulilayer surface mount for wide range applications 2. MLA Series Mulilayer surface mount design for high energy and surge application 3. CH Series Mulilayer surface mount design for high voltage suppressor, the working voltage could be up to Vdc 4. ESD Series Low capacitance design for high data transmission. Array Series 6. MOV Series Disc type design Type L mm W Mm D mm E mm W ± ± max / ± ± max /-0. L E ± 0..2 ± 0..0 max /-0. D ± 0..6 ± 0..2 max / ± ± 0.. max / ± ± max / ± 0..0 ± max /-0.

7 ML Series Part Number Identification. ML Series SFI 6 ML 240 C Series Code A = Operating voltage from 8.0V RMS (.0V DC )to 3.0V RMS (4.0V DC ), High surge absorption, low clamping voltage. C = Operating voltage from 2.V RMS (3.3V DC )to 9.0V RMS (27.0V DC ), Wide range application. Varistor Where: 240 = V = 24 V 24 = 24 0 V = 240 V Application Code ML = Multilayer SMD Varistor Size 0402; 0603; 080; 6; ; 82; ESD Series Part Number Identification SFI E 2 N P Company Logo Size : 0402 Model Series Unit mm 0603 Series Length(L).0 ±0..60 ±0. Width(W) 0.0 ± ±0. Thickness(T) 0.6 Max 0.9 Max Termination(a) 0.2 ± ±0. MAX Working : Mark 00 V 2V V Package: Mark Type P Taping C normal Cap. Tolerance: Mark Range N ±% P +80%-% Exception under PF Cap. Value: Where 2 = = 22(pF) Where 2R = = 2.(pF) Series: ESD Protect Solution

8 SFI Model Number Working Breakdown Peak Current Clamping Energy Absorption Typical Capacitance Unit Condition AC (V RMS ) DC (V) ma (V) 8/µs (A) (A) (V) 0/000 (J) KHz (pf) SFI6ML80A SFI6ML240A SFI6ML270A SFI6ML3A SFI6ML390A SFI6ML470A SFI6ML60A (.3~.7) 24(2.6~27) 27(24.3~29.8) 33(29.7~36.3) 39(3.~42.9) 47(42.3~.7) 6(0.4~6.6) SFIML0A SFIML80A SFIML240A SFIML270A SFIML3A SFIML390A SFIML470A SFIML60A (2.7~7.2) 8(.3~.7) 24(2.6~27) 27(24.3~29.8) 33(29.7~36.3) 39(3.~42.9) 47(42.3~.7) 6(0.4~6.6) SFI82ML80A SFI82ML240A SFI82ML270A SFI82ML3A SFI82ML390A SFI82ML470A SFI82ML60A (.3~.7) 24(2.6~27) 27(24.3~29.8) 33(29.7~36.3) 39(3.~42.9) 47(42.3~.7) 6(0.4~6.6) SFI22ML80A SFI22ML240A SFI22ML270A SFI22ML3A SFI22ML390A SFI22ML470A (.3~.7) 24(2.6~27) 27(24.3~29.8) 33(29.7~36.3) 39(3.~42.9) 47(42.3~.7) SMD Transient Suppressors High surge protection varistor A-series

9 SFI Model Number Working Breakdown Peak Current Clamping Energy Absorption Typical Capacitance Unit Condition AC (V RMS ) DC (V) ma (V) 8/µs (A) (A) (V) 0/000µs (J) KHz (pf) SFI0402ML00C SFI0402ML080C SFI0402MLC SFI0402ML0C SFI0402ML80C SFI0402ML2C SFI0402ML240C SFI0402ML270C SFI0402ML3C SFI0402ML390C (4.0~6.0) 8(6.4~9.6) 2(0.2~3.8) (2.7~7.2) 8(.3~.7) 22(9.8~24.2) 24(2.6~26.4) 27(24.3~29.7) 33(29.7~36.3) 39(3.~42.9) SFI0603ML00C SFI0603ML080C SFI0603MLC SFI0603ML0C SFI0603ML80C SFI0603ML240C SFI0603ML270C SFI0603ML3C SFI0603ML390C SFI0603ML470C SFI0603ML60C (4.0~6.0) 8(6.4~9.6) 2(0.2~3.8) (2.7~7.2) 8(.3~.7) 24(2.6~26.4) 27(24.3~29.7) 33(29.7~36.3) 39(3.~42.9) 47(42.3~.7) 6(0.4~6.6) SFI080ML080C SFI080MLC SFI080ML0C SFI080ML80C SFI080ML240C SFI080ML270C SFI080ML3C SFI080ML390C SFI080ML470C SFI080ML60C (6.4~9.6) 2(0.2~3.8) (2.7~7.2) 8(.3~.7) 24(2.6~26.4) 27(24.3~29.7) 33(29.7~36.3) 39(3.~42.9) 47(42.3~.7) 6(0.4~6.6) SMD Transient Suppressors Surface Mount Multi layer C Series

10 SFI Model Number Working Breakdown Peak Current Clamping Energy Absorption Typical Capacitance Unit Condition AC (V RMS ) DC (V) ma (V) 8/µs (A) (A) (V) 0/000µs (J) KHz (pf) SFI6ML080C SFI6MLC SFI6ML0C SFI6ML80C SFI6ML240C SFI6ML270C SFI6ML3C SFI6ML390C SFI6ML470C SFI6ML60C SFI6ML680C SFI6ML8C SFI6ML0C (6.4~9.6) 2(9.6~3.8) (2.7~7.2) 8(.3~.7) 24(2.6~26.7) 27(24.3~29.7) 33(29.7~36.3) 39(3.~42.9) 47(42.3~.7) 6(0.4~6.6) 68(6.2~74.8) 82(73.8~90.2) 00(90~0) SFIMLC SFIML0C SFIML80C SFIML240C SFIML270C SFIML3C SFIML390C SFIML470C SFIML60C SFIML680C SFIML8C SFIML0C (0.2~3.8) (2.7~7.2) 8(.3~.7) 24(2.6~26.4) 27(24.3~29.7) 33(29.7~36.3) 39(3.~42.9) 47(42.3~.7) 6(0.4~6.6) 68(6.2~74.8) 82(73.8~90.2) 00(90~0) SMD Transient Suppressors Surface Mount Multi layer C Series

11 SFI Model Number Working Breakdown Peak Current Clamping Energy Absorption Typical Capacitance Unit Condition AC (V RMS ) DC (V) ma (V) 8/µs (A) (A) (V) 0/000µs (J) KHz (pf) SFI82MLC SFI82ML0C SFI82ML80C SFI82ML240C SFI82ML270C SFI82ML3C SFI82ML390C SFI82ML470C SFI82ML60C SFI82ML680C SFI82ML8C (0.2~3.8) (2.7~7.2) 8(.3~.7) 24(2.6~26.4) 27(24.3~29.7) 33(29.7~36.3) 39(3.~42.9) 47(42.3~.7) 6(0.4~6.6) 68(6.2~74.8) 82(73.8~90.2) SFI22MLC SFI22ML0C SFI22ML80C SFI22ML240C SFI22ML270C SFI22ML3C SFI22ML390C SFI22ML470C SFI22ML60C SFI22ML680C SFI22ML8C (0.2~3.8) (2.7~7.2) 8(.3~.7) 24(2.6~26.4) 27(24.3~29.7) 33(29.7~36.3) 39(3.~42.9) 47(42.3~.7) 6(0.4~6.6) 68(6.2~74.8) 82(73.8~90.2) SMD Transient Suppressors Surface Mount Multi layer C Series

12 The Introductions of High Varistor MODEL NUMBER SFI Model Number MAX. ALLOWABLE VOLTAGE MAXIMUM RATING(TA=2 ) SURGE CURRENT ENERGY ABSORPTION (0/000µs) MAX. CLAMPING VOLTAGE CHARACTERISTICS(TA=2 ) VARISTOR VOLTAGE Thickness TYPICAL CAPACITANCE T± AC(V RMS ) DC(V) 8/µs(A) (J) (A) (V) (V) pf(khz) (mm) 08CH80L (.3~.7) CH2L (8.7~2.3) CH270L (22.9~3.0) CH3L (28.0~37.9) 0. 08CH390K (3.~42.9) 8. 08CH470K (42.3~.7) CH60K (0.4~6.6) CH680K (6.2~74.8) CH8K (74~90) CH0K (90~0) CH2K (08~32) 0. 08CHK (3~6) 0. 08CH8K (62~98) 0. 08CHK (80~2) 00 *. 08CH22K (98~242) 94 *. 08CH24K (26~264) 86 *. 08CH27K ( ) 76 *. 08CHK (270~3) 64 *. 08CH33K (297~363) 2 *. 08CH36K (324~396) 4 * CH39K (3~429) 42 * CH43K (7~473) 39 * CH47K (423-7) 3 * 2.0 Type Length Width Electrode 08CH (mm) 8.± 0..0± / (inch 0.3± ± / CH Series is the high voltage protection for use in hybrid circuit application in Industrial or power supply equipment utilizing surface mount devices. These devices have significantly lower profiles than radial lead varistor. Protection for 4Vdc to 460Vdc and more higher voltage protection.

13 ESD Solutions suppressor series Electro Static discharge (ESD) is the transients as short duration excursion. Our ESD products are based on Multilayer fabrication technology design to suppress ESD events. Our products meets IEC standard for Electromagnetic Compliance testing. We supply extra low capacitance and protect integrated circuits protection Feature Fast Response < 0.nS Low Working 3.3V Low Capacitance 2.pF Low Leakage Current < 0. ua Low Clamping Specification (for 0402 and 0603 size) XXXX=0402 or 0603 Part No, Working Clamping Leakage Capacitance Insulation Current Volume Resistance (Unit) VDC (max) Vclamp(max) ua(max) pf Ohm(Min) SFIXXXX-00E0NP SFIXXXX-00E8NP SFIXXXX-00E60NP SFIXXXX-00E3NP SFIXXXX-00E2NP SFIXXXX-00E00NP SFIXXXX-00E00PP ~9 0 SFIXXXX-E0NP SFIXXXX-E8NP SFIXXXX-E60NP SFIXXXX-E3NP SFIXXXX-E2NP SFIXXXX-E00NP SFIXXXX-E00PP ~9 SFIXXXX-240E2RPP ~4 The MAX Working is suited for under 24 V including 3.3V V 8V 2V 2.This Clamping at which the device stabilized during the transition from high to low impedance 8/μs waveform current A 3. All capacitance test under MHz, tolerance at +-%(N) exception under pf for +80% -% 4. The Leakage current was measured at working voltage. The Insulation Resistor was measured at working voltage

14 Array Solutions suppressor series * The Breakage was measured at ma DC, tolerance ±%. *2 The Clamping was measured at 8/μs wareform, A current. *3 The Leakage Current was measured at working voltage. *4 The Insulation Resistance was measured at working voltage. * The Capacitance was measured at M Hz, tolerance ±%. *6 Special specification requirement are available upon request, please contact sales for further request.

15 Lead type Solutions suppressor series SFI can also supply the following disc varistor. SFI Model Number Element Size (mm) Working Breakdown 0D 07D 0D 4D D AC DC ma(v) 80K 4 8(6~) 2K (~24) 270K (24~) 3K 26 33(~36) 390K (3~43) 470K 47(42~2) 60K 3 4 6(0~62) 680K (6~7) 8K (74~90) 0K (90~0) 2K 7 00 (08~32) K 9 2 0(3~6) 8K 0 80(62~98) K 70 0(8~22) 22K (98~242) 24K (26~264) 27K (247~3) K (270~3) 33K 270 3(297~363) 36K (324~396) 39K (3~429) 43K (7~473) 47K 0 470(423~7) K (49~6) 6K (04~66) 62K 0 6(8~682) 68K (62~748) 7K (68~82) 78K (702~88) 82K (7~902) 9K (89~00) 02K (900~00) 2K (990~) 82K (6~980) NOTES : detail specification please contact sales department

16 New Development and product roadmap item SFI have the strong R&D team to continual producing new overvoltage protection for Customer valued application and circuit protection. We supply customer all series protection from low voltage to high voltage and from single type to array type. Now our product roadmap are including following. More detail schedule and product specification, please contact our sales team for further request.. Extra low capacitance (0.pf) ESD protection Chip varistor the material is ZnO and the low capacitance need very high technical to production. SFI have the strong technical and our current mass production item capacitance is 2.pf. We still keep continual making research for under 0.pf capacitance for customer application. 2. Low voltage Array series type We are also making develop item of array 008 and 062 series for the working voltage lower 2.V and low capacitance request. 3. ESD and EMI function together Array products We also making new item of array with EMI function for customer.

17 Packaging K T T Top D B A P P P D E F W Symbol A 0 ±0.0 B 0 ±0.0 K 0 ±0.0 T ±0.0 T 2 ±0.0 D D ±0.0 P ±0.0 P 2 ±0.0 P 0 ±0.0 W ±0. E ± CH Reel Dimensions F ±0.0 Unit:mm E E C C D D B B A A W W W Symbol A B C D E W W ± ±0. 3.0± ± ±0. 9.0±0.0.± ± ±0. 3.0± ± ±0. 9.0±0.0.± ± ±0. 3.0± ± ±0. 9.0±0.0.± ± ±0. 3.0± ± ±0. 9.0±0.0.± ± ±0. 3.0± ± ±0. 9.0±0.0.± ± ±0. 3.±0. 2.0± ±0. 3.6±0.2.±0. 22/08CH 78.0± ±0. 3.±0. 2.0± ±0. 3.6±0.2.±0. Pieces packaged per reel Unit mm Type /08CH Pcs/reel

18 TYPICAL APPLICATION. ESD Series suggestion Device Description Data Rate &Frequency Rise time Capacitance USB 2.0 Data Port 480 M bps 0.~0.6 ns < 4pF USB. Data Port 2 M bps 4~ ns ~6pF Wireless device. M bps 7~0 ns ~6pF RS232 IrDA.0.2 K us~8 us 0~00pF Audio (Microphone/Speaker) ~K Hz 0.0mS~0 ms 0~00pF ESD series application field Mobile phone Digital Camera PDA Notebook MP3 player I/O Port, Keypad for portable LCD Module HUB Telecom Wireless LAN Keyboard 2. ML/CH series application field Telecommunication Security systems Alarm systems Medical device and equipment Lighting AC line protection Automotive system Controller Sensor Data Systems Power supplier IC, Semiconductor more application please contact SFI

19 Characteristic Definition Definition Characteristics Max. Working Varistor (BDV) Max. Clamping Surge Current Surge Shift V/V Energy Absorption Test Method or Description Maximum steady-state DC operating voltage the device can maintain and typical leakage current at 2 not exceed 0 μa. With the specified measuring current of ma DC applied. Tolerance of breakdown voltage: ~8V= ±%; 2~8V= ±%; 8~4V= ±0% Maximum peak voltage across the TVS measured at a specified pulse current(a)and waveform 8/μs. Maximum peak current within the varistor voltage change of ±0% may be applied with the specified waveform 8/μs. The shift of Varistor voltage after suffering the specified surge current. Maximum energy within the varistor voltage change of ±0% may be dissipated with a specified waveform 0/000μs. Device Capacitance measured with zero voltage bias 0.V RMS Typical Capacitance KH Z ; under 00pf measure at Mhz; Surge series the capacitance is only for reference. Nonlinear exponentα α= log(v ma /V 0.mA )/log(i ma /I 0.mA ) Leakage Current Typical leakage current at 2 <0μA; Maximum leakage 0μA; Standard Test Condition:Environmental condition under which every measuring is done without doubt on the measuring results. Unless specially specified, temperature, relative humidity are to 3, 4 to 8%RH. 8/μs waveform current(a) ESD protection waveform current IEC , EN , This generator complies with UL 449 August. 996 Table B.

20 Reliability Experiment Experiment High Temperature Storage/ Dry Heat Test Method and Description The specimen shall be subjected to 0 ± 2 for 000 ± 2 hours in a thermostatic bath without load and then stored at room temperature and humidity for to 2 hours. Therefore, the change of varistor voltage shall be measured. Temperature Cycle The temperature cycle of specified temper -ature shall be repeated five times and then stored at room temperature and humidity for one or two hours. the change of varistor voltage and mechanical damage shall be examined. Step Temperature Period -40±3 Min±3 2 Room Temperature hour 3 2±3 Min±3 4 Room Temperature hours High Temperature Load/ Dry Heat Load After being continuously applied the maximum allowable voltage at 8 ± 2 for 000± 2 hours, the specimen shall be stored at room temperature and humidity for one or two hours, Therefore the change of varistor voltage should be measured. Damp Heat Load/ Humidity Load The specimen should be subjected to 40± 2, 90 to 9% RH and the maximum allowable voltage for 00 hours and then stored at room temperature and humidity for one or two hours. Therefore the change of varistor voltage should be measured. Low Temperature Storage/ Cold Direct contact electrostatic discharge Direct air electrostatic discharge The specimen should be subjected to -0 ± 2, without load for 00 hours and then stored at room temperature for one or two hours. Therefore the change of varistor voltage should be measured..discharge: contact electrostatic discharge; 2.:8KV(Level4) 3.Polarity:+,- ; 4.Number: 0 times ;.Interval time:sec.discharge: air electrostatic discharge; 2.:KV(Level4) 3.Polarity:+,-; 4.Number: 0 times;.interval time:~ 3sec IEC Standard SEVERITY LEVEL AIR DISCHARGE DIRECT DISCHARGE 2 KV 2 KV 2 4 KV 4 KV 3 8 KV 6 KV 4 KV 8 KV

21 Recommendation for Soldering Soldering Recommendations: Material Temperature Flux Sn/Ag/Cu 96/3./0. or equivalent 260, 3 seconds max Non Activated. Recommended soldering temperature profile. Reflow Solder Profile (a)preheat.the temperature rising speed is suggested to be 2 /sec(max). 2.Appropriate preheat time will be from 60 to seconds. (b)heating.careful about sudden rise in temperature as it may worsen the solder ability. 2.Set the peak temperature in the range from 240 to 24. (c)cooling.careful about slow cooling as it may cause the position shift of component.

22 Recommendation for Soldering 2. Major point of SMT reflow (a) Solder pad layout : please refer to. (b) Steel plate and foot distance printing Foot distance printing (mm/mils) Steel Plate thickness (mm) > 0.6mm/2 mil 0.8mm 0.6mm/2 mils~0.mm/mils 0.mm 0.0mm/ mils~0.40mm/6mils 0.2mm <=0.40 mm/6 mils 0.0mm The IR reflow and temperature of Soldering for Pb Free Peak Temp sec. Peak Temp. 24 0sec. Pre-Heat 40 ~0 60~ Sec. IR reflow Pb Free Process suggestion profile () Soldering recommend paste is Sn 96./Ag 3. (2) Ramp-up rate (27 to Peak) + 3 /second max (3) Temp. maintain at 7 +/-2 80 seconds max (4) Temp. maintain above seconds () Peak temperature range 24 + / -0 time within of actually peak temperature (tp) 0~ seconds (6) Ramp down rate +6 /second max. Perform adequate test in advance as the reflow temperature profile will vary according to the conditions of the manufacturing process, and the specification of the reflow furnace.

23 Recommendation for Soldering Recommended Soldering Condition () Solder : 0.2~0.8mm Thread solder (Sn96.:Ag3.) with soldering flux in the core. Rosin-based and non-activated flux is recommended. (2) Preheating The Varistors shall be preheated so that Temperature Gradient between the devices and the tip of soldering iron is 0 or below. (3)Soldering Iron Rated Power of w max with 3mm soldering tip in diameter. Temperature of soldering iron tip 0 max ( The required amount of solder shall be melted in advance on the soldering tip.) (4)Cooling :After soldering. The Varistors shall be cooled gradually at room ambient temperature. The IR reflow and temperature of Soldering for normal Peak temp. 22 IR reflow Process suggestion profile () Soldering recommend is Sn 63: Pb 37 (2) Ramp-up rate (83 to Peak) + 3 /second max (3) Temp. maintain at 2 +/-2 seconds max (4) Temp. maintain above seconds () Peak temperature range 22 +/-0 ( 2 ~23 ) time within of actually peak temperature (tp) 0- seconds (6) Ramp down rate +6 /second max. Perform adequate test in advance as the reflow temperature profile will vary according to the conditions of the manufacturing process, and the specification of the reflow furnace. * Recommended Soldering Condition () Solder : 0.2~0.8mm Thread solder (Sn63:pb 37) with soldering flux in the core. Rosin-based and non-activated flux is recommended. (2) Preheating The Varistors shall be preheated so that Temperature Gradient between the devices and the tip of soldering iron is 0 or below. (3)Soldering Iron Rated Power of w max with 3mm soldering tip in diameter. Temperature of soldering iron tip 0 max ( The required amount of solder shall be melted in advance on the soldering tip.) (4)Cooling After soldering. The Varistors shall be cooled gradually at room ambient temperature.

24 SMD Varistor cross reference list 一. 0402/0603/080/Array series SFI Amotech EPCOS AVX 0402ML080C AVLM020 VC040X0 0402MLC AVL8M020 VC0409X0 0402ML0C AVLL ML80C AVL4K020 VC04024X0 0402ML240C AVL8K020 CT0402L4G VC04028X 0603ML00C AVL3M030 VC0603A ML080C AVLM030 CT0603M4G VC060A0 0603MLC AVL8M030 CT0603M6G VC0609A0 0603ML0C AVLL030 CT0603L8G 0603ML80C AVL4K030 CT0603KG VC06034A0 0603ML240C AVL8K030 CT0603K4G VC060A 0603ML270C CT0603K7G 0603ML3C CT0603KG VC060326A E0NP E60NP 0402-E0NP 0402-E60NP 0402-E00NP E2RPP 0603-E0NP 0603-E3NP 0603-E00NP E2RPP Array 008 AVLCS00 AVLCS00 AVLC4S00 AVLC4S00 AVLC8S0 AVLC8S003 AVLC8S03 AVLC8S0 AVLC8S0 AVLC0S003 AVNC8S0Q0 Array 062 AVNC8S06Q MG064L8X00 080ML080C AVLM0 CT080M4G VC0800A0 080MLC CT080M6G VC08009A0 080ML0C AVLL0 VC0802A20 080ML80C AVL4K0 CT080KG VC0804C0 080ML240C AVL8K0 CT080K4G VC0808C 080ML270C AVL22K0 CT080K7G 080ML3C AVL26K0 CT080KG VC08026C80 080ML390C CT080K2G VC080A60 080ML470C CT080KG

25 SMD Varistor cross reference list 二. 6//82/22/08CH series SFI Amotech EPCOS AVX SFI Amotech EPCOS AVX 6ML080C AVLM06 CT6M4G VC60A0 22ML80C CN22KG 6MLC AVL8M06 CT6M6G 22ML240C CN22K4G 6ML0C AVLL06 CT6L8G 22ML270C CN22K7G 6ML80C AVL4K06 CT6KG VC64D0 22ML3C CN22KG 6ML240C AVL8K06 CT6K4G VC68D 22ML390C CN22K2G 6ML270C AVL22K06 CT6K7G 22ML470C CN22KG 6ML3C AVL26K06 CT6KG VC626D80 22ML60C CN22K3G 6ML390C AVL3K06 CT6K2G 22ML680C CN22K40G 6ML470C AVLK06 CT6KG VC6D60 22ML8C CN22K0G 6ML60C AVL4K06 CT6K3G 08CH80L CU322KG2 6ML680C AVL6K06 CT6K40G VC648D0 08CH240L CU322K4G2 MLC AVL8M02 CTM6G 08CH3L CU322KG2 ML0C AVLL02 CTL8G 08CH390K CU322K2G2 ML80C AVL4K02 CTKG 08CH470K CU322KG2 ML240C AVL8K02 CTK4G VC8J390 08CH680K CU322K40G2 ML270C AVL22K02 CTK7G 08CH8K CU322K0G2 ML3C AVL26K02 CTKG VC26H60 08CH0K CU322K6G2 ML390C AVL3K02 CTK2G VCG6 08CH2K CU322K7G2 ML470C AVLK06 CTKG 08CHK CU322K9G2 ML60C AVL4K02 CTK3G VC48G0 08CH8K CU322KG2 ML680C AVL6K02 CTK40G 08CHK CU322KG2 82ML80C CN82LG 08CH22K CU322K40G2 82ML240C CN82K4G 08CH24K CU322K0G2 82ML270C CN82K7G 08CH27K CU322K7G2 82ML3C CN82KG 08CH36K CU322K2G2 82ML390C CN82K2G 08CH39K CU322K20G2 82ML470C CN82KG 08CH43K CU322K27G2 82ML60C CN82K3G 08CH47K CU322K0G2