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DATA SHEET
MINIATURE SIGNAL RELAY
EA2 SERIES
COMPACT AND LIGHTWEIGHT
DESCRIPTION
The EA2 series has reduced package size and power consumption to other NEC Conventional relays.
Furthermore, it complies with 1500 V surge-voltage requirement of FCC part 68 by the unique structure and the
efficient magnetic circuit
FEATURES
Low power consumption
Compact and light weight
2 form c contact arrangement
Low magnetic arrangement
Breakdown voltage : 1000 Vac (surge voltage 1500 V), FCC Part 68 compliant
Tube packaging
UL recognized (E73266), CAS certified (LR46266)
APPLICATIONS
Electronic switching systems, PBX, key telephone systems, automatic test equipment and other electronic equip-
ment.
ATTENTION
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's "Miniature Relays" (ER0046EJ) when you choose relays for
your application.
Document No. ER0001EJ6V0DS00 (6th edition)
Date Published June 1999 M
Printed in Japan
© 1989 (1996)

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OUTLINE DRAWING AND DIMENSIONS
Unit : mm (inch)
EA2 SERIES
PAD LAYOUT (bottom view)
10- φ 0.8(0.03)
14.2 max.
(0.56)
9.2 max.
(0.36)
0.5
(0.02)
2.54
(0.10)
7.62
(0.30)
0.25
(0.01)
Note. tolerance +– 0.2 (+– 0.008) unless otherwise specified
Dimensions in show basic size.
NJ type : Cover height-6.3 mm (0.248), Leads-2.8 mm (0.11)
2.54
(0.10)
10.16
(0.40)
Note. Tolerance +– 0.1 ( +– 0.004) unless othewise specified
MARKINGS
2
EA2-5
1
5
JAPAN
9106
3
Standard type
1
4
q Part number
w Manufacturer
e Country of origin
r Date code
t Index mark of relay direction
(pin No. 1, 10.)
y UL, CSA Marking
EA2-5NU
2
JAPAN 3
5 9106
6
UL recognized,
CSA certified type
4
SAFETY STANDARD AND RATING
UL Recognized
(UL508)
File No E73266
CSA Certificated
(CSA C22.2 No 14)
File No LR46266
30 Vdc, 1 A (Resistive)
110 Vdc, 0.3 A (Resistive)
125 Vdc, 0.5 A (Resistive)
Spacing : UL114, UL478
PIN CONFIGURATIONS
12345
+
Index mark of
relay direction
10 9 8 7 6
Non-latch type
(not energized position)
12345
–+
RS
+–
10 9 8 7 6
Single coil latch type
(reset position)
S
12345
+–
+–
10 9 8 7 6
R
Double coil latch type
(reset position)
S : Coil polarity of set (operate)
R : Coil polarity of reset (release)
2 DATA SHEET ER0001EJ6V0DS00

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EA2 SERIES
PART NUMBER SYSTEM
EA2 – 3 S NU
Nil : Standard type
NU : UL recognized, CSA certified type
NJ : Trimmed leads type
NP : Silver-palladium alloy contact (with gold alloy overlay)
UL recognized, CAS certified type
Latch type
Nil : Non-latch type (standard type)
S : Single coil latch type
T : Double coil latch type
Nominal coil voltage
3, 4.5, 5, 6, 9, 12, 24 Volts
EA2 series
PERFORMANCE CHARACTERISTICS
Contact Form
Contact rating
Initial contact resistance
Contact material
Nominal operating Power
Maximum switching power
Maximum switching voltage
Maximum switching current
Maximum carrying current
Minimum contact ratings
Non-latch type and double coil latch type
2 form c
30 W (resistive)
62.5 VA (resistive)
220 Vdc
250 Vac
1A
2A
10 mVdc, 10 µA 1
50 mtyp. (Initial)
Silver alloy with gold alloy overlay
140 mW (3 to 12 V)
200 mW (24 V)
Single coil Latch type
100 mW (3 to 12 V)
150 mW (24 V)
79 mW (3 to 12 V)
Minimum operating Power Non-latch type and double coil latch type
113 mW (24 V)
Single coil latch type
Operate time (excluding bounce)
Release time (excluding bounce)
Insulation resistance
Between open contacts
Breakdown voltage
Between adjacent contacts
Between coil and contact
Shock resistance
56 mW (3 to 12 V)
85 mW (24 V)
Approximately 2 ms without diode
Approximately 1 ms without diode
1000 Mat 500 Vdc
1000 Vac (for one minute)
1500 V surge (10 × 160 µs 2)
735 m / s2 (75 G) (misoperating)
980 m / s2 (100 G) (destructive failure)
Vibration resistance
10 to 55 Hz at double amplitude of 3 mm (20 G)
(misoperating)
10 to 55 Hz, at double amplitude of 5 mm (30 G)
(destructive failure)
Ambient temperature
–40°C to 85°C
Coil temperature rise
Noload
18 degrees at nominal coil voltage
1 × 108 operations (Non-latch type) 3
Running specifications
1 × 107 operations (latch type)
Load
50 Vdc 0.1 A (resistive), 1 × 106 operations at 85˚C, 2 Hz
10 Vdc 10 mA (resistive), 1 × 106 operations at 85˚C, 2 Hz
Weight
Approximately 1.5 grams
1 This value is a reference value in the resistance load.
Minimum capacity changes depending on seitching frequency and environment temperature and the load.
2 Rise time : 10 µs, fall time : 160 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
operation by which a steady characteristic is maintained is 1 × 107 times.
DATA SHEET ER0001EJ6V0DS00
3

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PRODUCT LINEUP
Non-latch Type
Nominal Coil
Voltage
(Vdc)
3
4.5
5
6
9
12
24
Coil
Resistance
() ±10 %
64.3
145
178
257
579
1028
2880
EA2 SERIES
Must Operate
Voltage
(Vdc)
2.25
3.38
3.75
4.5
6.75
9
18
at 20˚C
Must Release
Voltage
(Vdc)
0.3
0.45
0.5
0.6
0.9
1.2
2.4
Single-Coil Latch Type
Nominal Coil
Voltage
(Vdc)
3
4.5
5
6
9
12
24
Coil
Resistance
() ±10 %
90
202.5
250
360
810
1440
3840
Must Operate
Voltage
(Vdc)
2.25
3.38
3.75
4.5
6.75
9
18
at 20˚C
Must Release
Voltage
(Vdc)
2.25
3.38
3.75
4.5
6.75
9
18
Double-Coil Latch Type ∗∗ (Can not be driven by revese polarity for reverse operation.)
at 20˚C
Nominal Coil
Voltage
(Vdc)
Coil
Resistance
() ±10 %
Must Operate
Voltage
(Vdc)
Must Release
Voltage
(Vdc)
S 64.3
2.25
3
R 64.3
2.25
S 145
3.38
4.5
R 145
3.38
S 178
3.75
5
R 178
3.75
S 257
4.5
6
R 257
4.5
S 579
6.75
9
R 579
6.75
S 1028
9
12
R 1028
9
S 2880
18
24
R 2880
18
Note
Test by pulse voltage
∗∗ S : Set coil (pin No.1... + , pin No.5... ) R : Reset coil (pin No.10... + , pin No.6... )
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.
4 DATA SHEET ER0001EJ6V0DS00

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EA2 SERIES
TYPICAL PERFORMANCE DATA
SWITCHING CAPACITY
2.0
DC Load (resistive)
AC Load (resistive)
1.0
0.5 0.25A
0.4
0.3
0.136A
0.2
30 100 200
Switching Voltage (V)
250 Vdc
220 Vdc
OPERATE TIME
Operate Time
2 Bounce Time at Operate
1
COIL TEMPERATURE RISE
80
60
40
20
0 100 200 300 400
Applied Power (mW)
0
100 200 300 400
500
Applied Power (mW)
RELEASE TIME WITHOUT DIODE
2
Release Time
1
Bounce Time at Release
0
100 200 300 400
500
Applied Power (mW)
RUNNING SPECIFICATIONS (Noload)
Sample : EA2-5 n = 10
Load : None
5
Operate Voltage
Release Voltage
4
3
2
1
01
23
5
10
Number of Operations ( × 10 6 operations)
RELEASE TIME WITH DIODE
Release Time
2
1 Bounce Time at Release
0
100 200 300 400
500
Applied Power (mW)
1000
500
300
200
Temperature : 85˚C
Drive : 5 Vdc, 10 Hz 50% duty
Make contact
Break contact
100
50
30
20
100 1
23
5
10
Number of Operations ( × 10 6 operations)
DATA SHEET ER0001EJ6V0DS00
5