DATA SHEET
MINIATURE SIGNAL RELAY
ED2/EF2 SERIES
Ultra-low power, compact and lightweight, High breakdown voltage,
Surface mounting type
DESCRIPTION
NEC TOKIN's new miniature signal relays, ED2/EF2 series, achieved 50 mW of ultra low power consumption.
FEATURES
Low power consumption (50 mW)
Applicable for the surge voltage standard of FCC (1500 V, 10 × 160 µs) and Telcordia (2500 V, 2 × 10
µs)
Two types for through-hole mounting (ED2 series) and surface mounting (EF2 series)
Variation of dense mounting type and/or long-joint-life type for latest SMT
• Compatible configuration and terminal allocation with dense mounting type of EE2 series
• Upgraded soldering joint reliability between the relay terminal and PCB by optimization of the terminal
configuration;
20-year-joint-life
under
35°C-per-day-temperature-difference
specified
in
IPC-SM-785
for
telecommuication equipment
APPLICATIONS
Electronic switching systems, PBX, terminal equipment, telephone system.
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 CAUTIONS IN THE SELECTION GUIDE.
Read the cautions described in NEC/TOKIN's "Miniature Relays" when you choose relays for your application.
The information in this document is subject to change without notice.
Document No. 0610EMDD03VOL02E
Date Published May 2005 P
Printed in Japan
© NEC TOKIN Corporation 2002
ED2/EF2 SERIES
PERFORMANCE CHARACTERISTICS
2 Form c
Maximum Switching Power 30 W (resistive)
62.5 VA (resistive)
Maximum Switching Voltage 220 Vdc
250 Vac
Contact Ratings
Maximum Switching Current 1 A
Maximum Carrying Current 2 A
Minimum Contact Ratings
10 mV. dc, 10
µA
＊4
Initial Contact Resistance
75 mΩ max. (Initial)
Contact Material
Silver alloy with gold alloy overlay
Non-Latch Type
50 to 70 mW
Nominal Operating Power Single Coil Latch Type 30 to 80 mW
Double Latch Type
50 to 80 mW
Operate Time (Excluding Bounce)
Approximately 3 ms
Release Time (Excluding Bounce)
Approximately 2 ms without diode
Insulation Resistance
1000 MΩ at 500 Vdc
Between Open Contacts
1000 Vac for one minute (1500 V surge, (10 × 160
µs
＊1
)
Between Adjacent Contacts
Non-latch type and single-coil latch type
Breakdown Voltage
1500 Vac for one minute (2500 V surge, 2 × 10
µs
＊2
)
Between Coil to Contact
Double-coil latch type
1000 Vac for one minute (1500 V surge, 10 × 160
µs
＊1
)
2
735 m / s (misoperating)
Shock Resistance
2
980 m / s (destructive failure)
10 to 55 Hz at double amplitude at 3 mm
(misoperating)
Vibration Resistance
10 to 55 Hz, double amplitude of 5 mm
(Destructive failure)
Non-latch type (Additional “N”): - 40 to +85°C
Ambient Temperature
Non-latch type (Standard): - 40 to +70°C
Latch type : - 40 to +70°C
Coil Temperature Rise
7 degrees at nominal coil voltage (50 mW)
8
1 × 10
＊3
operations (Non-latch type)
No-load
7
1 × 10 operations (Latch type)
Running specifications
6
50 Vdc 0.1 A (resistive), 1 × 10 operations at 70°C
Load
6
10 Vdc 10 mA (resistive), 1 × 10 operations at 70°C
Weight
Approximately 2.2 grams
＊1
rise time : 10
µs,
decay time to half crest : 160
µs
＊2
rise time : 2
µs,
decay time to half crest : 10
µs
＊3
This shows a number of operation where it can be running by which a fatal defect is not caused, and a number of
7
operation by which a steady characteristic is maintained is 1 × 10 operations.
＊4
This value is a reference value in the resistance load.
Minimum capacity changes depending on seitching frequency and environment temperature and the load.
Contact Form
Recommended relay drive conditions
Drive under conditions. If it is impossible, please inquire to NEC.
Additional “N” type
of non-latch
Voltage: within ±5% at nominal voltage
standard type
of non-latch
Square pulse (rise and fall time is rapidly)
Single coil latch type Pulse height : within ±5% at nominal voltage
Pulse width : More than 10 ms
Ambient temperature
- 40 to +85°C
Ambient temperature
- 40 to +70°C
Ambient temperature
- 40 to +70°C
4
Making friends through disassembly
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