DATA SHEET MINIATURE SIGNAL RELAY EC SERIES COMPACT AND LIGHTWEIGHT, SMALL MOUNTING SIZE, HIGH BREAKDOWN VOLTAGE DESCRIPTI The EC series has reduced mounting space but sustained high-performance of NEC EA series. Furthermore, it complies with V surge-voltage requirement of Bellcore specification. FEATURES Compact and light weight form c contact arrangement Low power consumption Reduced mounting space : mm 7. mm High-breakdown voltage of coil to contacts : Vac, V (rise time : µs, fall time : µs) Capable of High-power switching : 7 Vac, 4. A, 4 times in case of accident UL recognized (E7), CAS certified (LR4) APPLICATIS Electronic switching systems, PBX, terminal equipment, telephone systems. For Right Use of Miniature Relays DO NOT EXCEED MAXIMUM RATINGS. Do not use relays under exceeding conditions such as over ambient temperature, over voltage and over current. Incorrect use could result in abnormal heating, damage to related parts or cause burning. READ CAUTIS IN THE SELECTI GUIDE. Read the cautions described in NEC's "Miniature Relays" (ER4EJ ) when you choose relays for your application. Document No. EREJ4VDS (4th edition) Date Published June M Printed in Japan 4()
EC SERIES OUTLINE DRAWING AND DIMENSIS PAD LAYOUT (bottom view) Unit : mm (inch) Non-latch and Single coil latch Double coil latch. (.). (.) MAX..4(.7) MAX.. (.) 7. (.) MAX..8.4.4.4.8 (.)(.)(.)(.) (.). (.).4 (.) 8- φ.8 (.) 4.4 (.).4(.).4(.).4 (.) - φ.8 (.).4 (.).4(.).4(.) Note. General tolerance : +. ( +.8) Note. General tolerance : +. ( +.4) Dimensions in show basic size. NJ type : Leads-.8 mm (.) MARKINGS SAFETY STANDARD AND RATING Standard type EC- UL Recognized (UL8) File No E7 CSA Certificated (CSA C. No 4) File No LR4 Vdc, A (Resistive) Vdc,.A (Resistive) Vdc,.A (Resistive) Spacing : UL4, UL478 JAPAN UL recognized, CSA certified type 4 q Part number w Manufacturer e Country of origin r Date code t Index mark of relay direction (pin No., ) y UL, CSA Marking TUV Certificate (EN / IEC) No. R 7 (Nonlatch and Single-coil-latch) Creepage and clearance of coil to contact is more than mm. (According EN) Basic insulation class EC-NU JAPAN 4 PIN CFIGURATIS (bottom view) 4 4 4 R S S R Index mark of relay direction 8 8 8 7 Non-latch type (not energized position) Single coil latch type (reset position) Double coil latch type (reset position) S : Coil polarity of set (operate) R : Coil polarity of reset (release) DATA SHEET EREJ4VDS
EC SERIES PART NUMBER SYSTEM EC S NU Nil : Standard type NU : UL recognized, CSA certified type NJ : Trimed leads type NP : Silver-palladium alloy contact (with gold alloy overlay) UL recognized, CSA certified type Latch type Nil : Non-latch type S : Single coil latch type T : Double coil latch type Nominal coil voltage, 4.,,,,, 4 V EC series PERFORMANCE CHARACTERISTICS Contact Form Contact Material Contact Ratings Maximum Switching Power (UL / CSA Rating) Maximum Switching Maximum Switching Current Maximum Carrying Current Minimum Contact Ratings Initial Contact Resistance Non-Latch Type Nominal Operating Power Single Coil Latch Type Single Coil Latch Type Operate Time (Excluding Bounce) Release Time (Excluding Bounce) Insulation Resistance Between Open Contacts Between Adjacent Contacts Breakdown Between Coil and Contact Shock Resistance Form c Silver alloy with gold alloy overlay W, VA Vdc, Vac A A mvdc, µa mω typ. (Initial) 4 mw ( to V), mw (4 V) mw 4 mw Approx. ms Approx. ms without diode MΩ at Vdc Vac (for one minute) V surge ( µs ) Vac (for one minute) Double Coil Vac (for one minute) V surge, ( µs ) Latch type V surge ( µs ) 7 m / s (7 G) (misoperating) 8 m / s ( G) (destructive failure) Vibration Resistance Ambient Temperature Coil Temperature Rise Running specifications Weight No-load Load to Hz double amplitude of mm ( G) (misoperating) to Hz, double amplitude of mm ( G) (Destructive failure) 4 to 8 C 8 degrees at nominal coil voltage (4 mw) 8 4 operations (Non-latch type) 7 operations (latch type) Vdc,. A (resistive) operations at 8 C, Hz Vdc, ma (resistive) operations at 8 C, Hz Approx.. g This value is reference value in the resistance load. Minimum capacity changes depending on switching frequency and environment temperatur and the load. rise time : µs, fall time : µs rise time : µs, fall time : µs 4 This shows a number of operation where it can be running by which a fatal defect is not caused, and a number of operation by whicha steady characteristic is maintained is 7 times. DATA SHEET EREJ4VDS
EC SERIES PRODUCT LINEUP Non-latch Type at C Nominal Coil Coil Resistance (Ω) ± % Must Operate Must Release 4... 4. 4.8.4 78.7. 7 4.. 7.7. 8. 4 88 8.4 Single-Coil Latch Type at C Nominal Coil Coil Resistance (Ω) ± % Must Operate Must Release.. 4...8.8.7.7 4. 4. 8.7.7 44 4 7 8 8 Double-Coil Latch Type (Can not be driven by revese polarity for reverse operation.) Nominal Coil 4. 4 Coil Resistance (Ω) ± % S 4. R 4. S 4 R 4 S 78 R 78 S 7 R 7 S 7 R 7 S 8 R 8 S 44 R 44 Must Operate..8.7 4..7 8 Must Release..8.7 4..7 8 Note Test by pulse voltage S : Set coil (pin No... +, pin No... ) R: Reset coil (pin No... +, pin No... ) The latch type relays should be initalized at appointed position before using, and should be enegized to specific polanity by a bone polabity to avoid wrong operation. Any special coil requirement, please contact NEC for availability. at C 4 DATA SHEET EREJ4VDS
EC SERIES TYPICAL PERFORMANCE DATA SWITCHING CAPACITY COIL TEMPERATURE RISE Switching Current (A)..4.. DC Load (resistive) AC Load (resistive).7 A Coil Temperarure Rise ( C) 4 Switching (V) V V 4 Applied Power (mw) OPERATE TIME Operate Time or Bounce Time at Operate (ms) Operate Time Bounce Time Operate 4 Applied Power (mw) Release Time or Bounce Time at Release (ms) RELEASE TIME WITHOUT DIODE Release Time Bounce Time at Release 4 Applied Power (mw) Release Time or Bounce Time at Release (ms) RELEASE TIME WITH DIODE Release Time Bounce Time at Release 4 Applied Power (mw) RUNNING SPECIFICATIS (Noload) Operate or Release (V) 4 Operate Release Sample : EE- n= Load : None 4 Number of Operations(x operations) Contact Resistance(mΩ) Temperature : 8 C Drive : Vdc, Hz % duty Make contact Break contact Number of Operations(x operations) DATA SHEET EREJ4VDS
EC SERIES BREAKDOWN VOLTAGE Sample : EC- (a) Between Open Contacts (n = pcs) (a) Between Adjacent Contacts (n = pcs) Appearance Appearance...... Breakdown voltage (kv) Breakdown voltage (kv) (a) Between Coil and Contacts (n = pcs) Appearance MAGNETIC INTERFERENCE.. Breakdown voltage (kv). Drift of Operate (%) +4 + + + 4 Max. Min. I II III IV V VI Drift of Release (%) +4 + + + 4 Max. Min. I II III IV V VI Layout Layout OFF OFF OFF.4 OFF Layout Layout Layout Layout I II III IV.4 OFF OFF OFF Sample Layout V Layout VI Mounting Layout (mm) DATA SHEET EREJ4VDS
EC SERIES PACKAGE Dimensions of Relay Tube (Unit : mm) pieces / Tube Material : Polyvinyl chloride (auti-static treated). +. 4 + (. t) (4.8). +. (.4) ( ) Reference Outline of Package Rubber stopper (Red) Rubber stopper (Green) Index Mark GUIDE TO APPLICATIS. When connecting coils, refer to the pin configuration to prevent misoperation or malfunction.. The latch type relay should be initialized at the appointed position (set or reset position) when using, and should be energized or deenergized to the specified polarity to avoid wrong operations by reversed contact state.. Soldering should be done at C within sec. 4. Ultrasonic cleaning is not recommended to keep reliable contact performance. Alcohol based solvents are available as proper solvents.. Minimum contact load of the relay is mv, µa. This value is a reference value in the resistance load. Minimum capacity changes depending on swiching frequency and environment temperature and the load. DATA SHEET EREJ4VDS 7
EC SERIES Specific: No part of this document may be copied or reproduced in any form or by any means without the prior written consent of NEC Corporation. NEC Corporation assumes no responsibility for any errors which may appear in this document. NEC Corporation does not assume any liability for infringement of patents, copyrights or other intellectual property rights of third parties by or arising from use of a device described herein or any other liability arising from use of such device. No license, either express, implied or otherwise, is granted under any patents, copyrights or other intellectual property rights of NEC Corporation or others. While NEC Corporation has been making continuous effort to enhance the reliability of its electronic components, the possibility of defects cannot be eliminated entirely. To minimize risks of damage or injury to persons or property arising from a defect in an NEC electronic component, customers must incorporate sufficient safety measures in its design, such as redundancy, fire-containment, and antifailure features. NEC devices are classified into the following three quality grades: "Standard", "Special", and "Specific". The Specific quality grade applies only to devices developed based on a customer designated "quality assurance program" for a specific application. The recommended applications of a device depend on its quality grade, as indicated below. Customers must check the quality grade of each device before using it in a particular application. Standard: Computers, office equipment, communications equipment, test and measurement equipment, audio and visual equipment, home electronic appliances, machine tools, personal electronic equipment and industrial robots Special: Transportation equipment (automobiles, trains, ships, etc.), traffic control systems, anti-disaster systems, anti-crime systems, safety equipment and medical equipment (not specifically designed for life support) Aircrafts, aerospace equipment, submersible repeaters, nuclear reactor control systems, life support systems or medical equipment for life support, etc. The quality grade of NEC devices is "Standard" unless otherwise specified in NEC's Data Sheets or Data Books. If customers intend to use NEC devices for applications other than those specified for Standard quality grade, they should contact an NEC sales representative in advance. Anti-radioactive design is not implemented in this product.