AUTOMOTIVE RELAYS
EP2 SERIES
FEATURES
• Twin relay for motor and solenoid reversible control
• 50% less relay space than conventional two relays
• Contact switching current of 30 A max.
• High performance and productivity by unique symmetrical
structure
• Flux tight housing
• Delivered in stick-tube for automatic insertion machine
• Washable type available
PART NUMBERS AND COIL RATINGS
Part Number
H bridge
Type
EP2-3N1S
EP2-3N2S
EP2-3N3S
EP2-4N3S
EP2-4N4S
EP2-4N5S
Separate
Type
EP2-3N1ST
EP2-3N2ST
EP2-3N3ST
EP2-4N3ST
EP2-4N4ST
EP2-4N5ST
Nominal
Voltage
(Vdc)
12
12
12
12
12
12
Coil
Resistance
(Ω±10%)
225
225
225
300
300
300
Nominal
Current
(mA)
53.3
53.3
53.3
40.0
40.0
40.0
Must Operate
Voltage
(Vdc)
6.5
7.0
7.5
7.5
8.0
8.5
Must Release
Voltage
(Vdc)
0.9
0.9
0.9
0.9
0.9
0.9
At 20°C (68°F)
Nominal
Operate Power
(W)
0.64
0.64
0.64
0.48
0.48
0.48
PART NUMBER SYSTEM
EP2F-B3G1ST
Type
NiI : Standard type
F : High heat resistivity type
NiI : Standard type
B : High current type
3 : 225
Ω ±
10 %
4 : 300
Ω ±
10 %
L : Silver oxide complex alloy type I
N : Silver oxide complex alloy type II
G : Silver oxide complex alloy type III
(high current type)
Heat Resistivity
Carrying Current Capacity
Coil Resistance
(at 20°C)
Contact Material
Wiring
Enclosure
Must Operate Voltage
(at 20
°C)
NiI : H bridge type
T : Separate type
NiI : Unsealed
S : Sealed
1 : 6.5 V
2 : 7.0 V
3 : 7.5 V
4 : 8.0 V
5 : 8.5 V
Figure 1 Contact Resistance*
• H Bridge (rout A)
• H Bridge (rout B)
A
B
A
B
• Separate (N/C)
• Separate (N/O)
4
AUTOMOTIVE RELAYS
DIMENSIONS
mm (inch)
[H Bridge Type]
23.8
±
0.5
(0.94)
0.5(0.02)
*3.8
+1.0
16.0
±
0.5
–0.5
(0.15)
(0.63)
[Separate (T) Type]
16.2
±
0.5
(0.64)
23.8
±
0.5
(0.94)
0.5(0.02)
16.0
±
0.5
(0.63)
+1.0
–0.5
16.2
±
0.5
(0.64)
10.1
8.0
(0.4)
(0.31)
3.5
(0.14 )
*2-0.5
×
1.1(0.02
×
0.04)
3.1(0.12)
2.2(0.09)
5.45 (0.21)
10.1
8.0
(0.4)
(0.31)
3.5
(0.14 )
*4-0.5
×
1.1(0.02
×
0.04)
2.2(0.04)
3.1(0.12)
5.45 (0.21)
2
1
6.4 (0.25)
*3.8
(0.15)
2.2
(0.09)
(0.14) 3.5
(0.31)
(0.4)
3.1
(0.12)
2.2
(0.09)
8.0
10.1
*2-1.3
×
1.3
(0.05
×
0.05)
*4-
φ
0.6
(
φ
0.02)
(0.14) 3.5
(0.31)
(0.4)
8.0
10.1
* After soldering
*2-1.3
×
1.3
(0.05
×
0.05)
*4-
φ
0.6
(
φ
0.02)
PCB PAD LAYOUT and SCHEMATICS
(bottom view) mm (inch)
[H Bridge Type]
+0.1
4-
φ
1.1
−0
(
φ
0.043)
+0.1
2-
φ
1.5
−0
(
φ
0.059)
2
1
3
4
8
5
6
7
[Separate (T) Type]
+0.1
4-
φ
1.1
−0
(
φ
0.043)
+0.1
4-
φ
1.5
−0
(
φ
0.059)
3 9
4
10
56
8
7
+0.1
2-
φ
1.9
−0
(
φ
0.075)
(Side A)
+0.1
2-
φ
1.9
−0
(
φ
0.075)
(Unit A)
(Side B)
6.4 (0.25)
5.45
(0.21)
6.4
(0.25)
5.45
(0.21)
(Unit B)
SPECIFICATIONS
Items
EP2- (Standard)
Contact Form
Contact Material
Contact Resistance
(* figure 1)
(measured by voltage drop at 6Vdc, 7A)
Contact Switching Voltage
Contact Switching Current
Contact Carrying Current
(2 minutes max.)
Operate Time
Release Time
Nominal Operate Power
Insulation Resistance
Breakdown Voltage
Shock Resistance
Vibration Resistance
Ambient Temperature
Coil Temperature Rise
Life Expectancy
Weight
Mechanical
Electrical
Specification
At 20°C (68°F)
EP2-B (High Current)
1 Form c
×
2 (H Bridge Type or Separate Type)
Silver oxide complex alloy (Special types available)
H Bridge (rout A): 10.7 mΩ typ.
H Bridge (rout A): 6.7 mΩ typ.
H Bridge (rout B): 10.4 mΩ typ.
Separate (N/C): 5.2 mΩ typ.
Separate (N/O): 5.2 mΩ typ.
16 Vdc max. 5 Vdc min.
30A max. (at 16 Vdc) 1A min.
25A (12 Vdc, 20°C)
20A (12 Vdc, 85°C)
Approx. 5 ms (at 12 Vdc)
Approx. 7 ms (at 12 Vdc), with diode
0.48 W/0.64 W (at 12 Vdc)
100 MΩ min. at 500 Vdc, Initial
500 Vac min. for 1 minute, Initial
98 m/s
2
min. (misoperating)
10 to 300 Hz, 43 m/s
2
min. (misoperating)
–40°C to +85°C (–40°F to +185°F)
50°C/W (Contact Carrying Current 0 A)
1
×
10
6
operations
1
×
10
5
operations (at 14 Vdc, Motor Load 25 A/5 A)
Approx. 15 g
H Bridge (rout B): 6.4 mΩ typ.
Separate (N/C): 3.2 mΩ typ.
Separate (N/O): 3.2 mΩ typ.
30A (12Vdc, 20°C)
25A (12Vdc, 85°C)
5
AUTOMOTIVE RELAYS
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prior written consent of NEC/TOKIN Corporation. NEC/TOKIN Corporation assumes no resposibility
for any errors which may appear in this document.
NEC/TOKIN 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
/TOKIN Corporation or others.
While NEC/TOKIN Corporation has been making continuous effort to enhance the reliability of its
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of damage or injury to persons or property arising from a defect in an NEC/TOKIN electronic component,
customers must incorporate sufficient safety measures in its design, such as redundancy,fire-
containment, and anti-failure features. NEC/TOKIN 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
a p p l i c a t i o n . T h e r e c o m m e n d e d 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
e q u i p m e n t ( n o t specifically designed for life support)
Specific: Aircrafts, aerospace equipment, submersible repeaters, nuclear reactor control
s y s t e m s , l i f e support systems or medical equipment for life support, etc.
The quality grade of NEC/TOKIN devices is "Standard" unless otherwise specified in NEC/TOKIN’s
Data Sheets or Data Books. If customers intend to use NEC/TOKIN devices for applications other
than those specified for Standard quality grade, they should contact an NEC/TOKIN sales representative
in advance.
(Note)
(1) "NEC/TOKIN" as used in this statement means NEC/TOKIN Corporation and also includes
its majority-owned subsidiaries.
( 2 ) "NEC/TOKIN electronic component products" means any electronic component product developed
or manufactured by or for NEC/TOKIN (as defined above).
DE0202
