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DESCRIPTION
The NEC EP2F / EP1F series are PC-board mount type automotive relays suitable for various motor controls
and other applications that require a high level of quality and performance.
The operate temperature range for EP2F / EP1F series is –40˚C through +125˚C.
By this high heat resistivity, the contact carr ying current of EP2F / EP1F series at 25˚C increases 1.3 or 1.4 times
compared with that of EP2 / EP1 series.
FEATURES
™ Operating ambient temperature up to +125˚C (EP2 / EP1 : +85˚C)
™ Suitable for motor and solenoid reversible control
™ High performance and productivity by unique structure
™ Flux tight housing
DATA SHEET
AUTOMOTIVE RELAYS
EP2F/EP1F SERIES
HIGH HEAT RESISTIVITY
APPLICATIONS
™ Power window control
™ Power sunroof
™ Wiper system
EP 2F SERIES EP 1F SERIES
Document No. ER0145EJ1V0DS00
Date Published December 1995 M
Printed in Japan
©
1995
EP2F / EP1F SERIES
SCHEMATIC (BOTTOM VIEW)
EP2F SERIES EP1F SERIES
2
3
2
1
4
3
9
1
4
2
1
3
4
5
6
7
[Unit A] [Unit B]
[H Bridge Type]
DIMENSIONS mm (inch)
EP2F SERIES
JAPAN
Part number
EP
2F-B3
L2
0G3 24
+
23.8 0.5
–
(0.94) (0.64)
8
10
5
6
8
7
5
[Unit A] [Unit B]
[Separate Type]
Separate TypeH Bridge Type
Vent hole
Date code
–
+
0.5(0.02)
16.0 0.5
(0.63)
+
16.2 0.5
–
Separate type
discrimination mark
φ
2(0.079)
Part number
JAPAN
EP
2F-B3
L2T
0G
3 24
+
23.8 0.5
–
(0.94) (0.64)
Vent hole
Date code
+
0.5(0.02)
16.0 0.5
–
(0.63)
+
16.2 0.5
–
(0.21)
5.45
2.2
(0.09)
(0.14)
(0.4)
10.1
(0.31)
8.0
3.5
(0.14)
3.5
(0.31)
8.0
10.1
(0.4)
(11.9) (11.9)
3.5
(0.14)
2-0.5×1.1(0.02×0.04)
3.1(0.12)
2.2
(0.09)
(0.21)
(0.25)
6.4
5.45
2-1.3×1.3(0.05×0.05)
φφ
4- 0.6( 0.22)
∗
for reference
∗
∗
8.1
8.1
(0.32)(0.32)
(0.21)
6.4
(0.21)
5.45
3.1
2.2
(0.12)
10.1
8.0
(0.09)
3.5(0.14)
(0.31)
(0.4)
(11.9) (11.9)
(0.4)
(0.31)
(0.14)
8.0
10.1
3.5
3.5
(0.14)
4-0.5×1.1(0.02×0.04)
3.1
2.2
(0.09)
(0.12)
(0.25)
(0.21)
6.4
5.45
2-1.3×1.3(0.05×0.05)
φφ
4- 0.6( 0.22)
∗
for reference
∗
∗
8.1
8.1
(0.32)(0.32)
2
EP1F SERIES
EP2F / EP1F SERIES
Part number
φ
2- 0.6
φ
( 0.02)
JAPAN
Vent hole
Date code
EP1F-B3G1
22
4A 1
+
14.6 0.5 16.2 0.5
–
+
–
(0.63)(0.58)
–
+
(0.63)
16.0 0.5
0.5(0.02)
3.5
(0.14)
10.1(0.4) 2.65∗(0.1)
8.0(0.31)
3.5
(0.14)
(0.12)
3.16.4
(0.25)
5.45
1.3×1.3
2.2
(0.21)
(0.09)
(1.5×1.5)
2-0.5×1.1
(0.02×0.02)
PCB PAD LAYOUT mm (inch) (BOTTOM VIEW)
EP2F SERIES EP1F SERIES
+0.1
φ
φφφφ
4- 1.1
( 0.043)
–0
2- 1.5
+0.1
( 0.059)
–0
φ
2- 1.9
φ
+0.1
–0
φ
( 0.075)
4- 1.1
+0.1
–0
φ
( 0.043)
4- 1.5
+0.1
φ
( 0.059)
–0
φ
2- 1.9
+0.1
–0
φ
( 0.075)
∗for reference
+0.1
φ
1.9
–0
φ
( 0.075)
φ
2- 1.1
φ
( 0.043)
+0.1
–0
φ
2- 1.5
φ
( 0.059)
+0.1
–0
[H Bridge Type] [Separate Type]
3
EP2F / EP1F SERIES
SPECIFICATIONS
Items
Contact Form
Contact Material
Contact Resistance
Contact Switching Voltage
Contact Switching Current
Contact Carrying Current
Operate Time
Release Time
Normal Operate Power
Insulation Resistance
Breakdown Voltage
Shock Resistance
Vibration Resistance
Ambient Temperature
Coil Temperature Rise
Mechanical
Life Expectancy
Weight
Electrical
Contact
G
Contact
L or N
at 25 ˚C (77 ˚F)
EP2F EP1F
1 form C×2 (H bridg type and separate type) 1 form C
Silver oxide complex alloy
50 mΩ max. (measured at 7 A) initial
16 Vdc max.
25 A max.
35 A (2 minutes max. 12 Vdc at 25˚C) 40 A (2 minutes max. 12 Vdc at 25˚C)
30 A (2 minutes max. 12 Vdc at 85˚C) 35 A (2 minutes max. 12 Vdc at 85˚C)
25 A (2 minutes max. 12 Vdc at 125˚C) 30 A (2 minutes max. 12 Vdc at 125˚C)
Approx. 5 ms (at 12 Vdc excluding bounce) initial
Approx. 2 ms (at 12 Vdc excluding bounce) initial
0.64 W (at 12 Vdc)
100 MΩ min. (at 500 Vdc) initial
500 Vdc min. (for 1 minute) initial
98 m / s2 [Approx. 10 G] min. (misoperating)
10 to 300 Hz, 43 m / s2 [Approx. 4.4 G] min. (misoperating)
–40 ˚C to +125 ˚C (–40 ˚F to +257 ˚F)
50 ˚C / W (without contact carrying current)
1×106 operations
1×105 operations (at 14 Vdc, Motor Load 25 A / 7 A) at 25 ˚C
1×105 operations (at 14 Vdc, Motor Load 18 A / 5 A) at 125 ˚C
1×105 operations (at 14 Vdc, Motor Load 20 A / 3 A) at 25 ˚C
1×105 operations (at 14 Vdc, Motor Load 12 A / 2 A) at 125 ˚C
Approx. 15 gr Approx. 8 gr
COIL RATING
EP2F SERIES
H Bridge Type Separate T ype
Contact
G
Contact
L or N
EP1F SERIES
Contact
G
Contact
L or N
EP2F-B3G1 EP2F-B3G1T
EP2F-B3G2 EP2F-B3G2T
EP2F-B3G3 EP2F-B3G3T
EP2F-B3L1 EP2F-B3L1T
EP2F-B3L2 EP2F-B3L2T
EP2F-B3L3 EP2F-B3L3T
Part Number
EP1F-B3G1
EP1F-B3G2
EP1F-B3G3
EP1F-B3L1
EP1F-B3L2
EP1F-B3L3
Part Number
Nominal
Voltage
(Vdc)
12
12
12
12
12
12
Nominal
Voltage
(Vdc)
12
12
12
12
12
12
Coil
Resistance
+
(Ω 10 %)
–
225
225
225
225
225
225
Coil
Resistance
+
(Ω 10 %)
–
225
225
225
225
225
225
Must
Operate Voltage
(Vdc max.)
6.5
7.0
7.5
6.5
7.0
7.5
Must
Operate Voltage
(Vdc max.)
605
7.0
7.5
6.5
7.0
7.5
Release V oltage
(Vdc min.)
Must
Release V o l tage
(Vdc min.)
0.9
0.9
0.9
0.9
0.9
0.9
Must
0.9
0.9
0.9
0.9
0.9
0.9
at 25 ˚C (77 ˚F)
Nominal
Operate Power
(W)
0.64
0.64
0.64
0.64
0.64
0.64
Nominal
Operate Power
(W)
0.64
0.64
0.64
0.64
0.64
0.64
4
NUMBERING SYSTEM
EP2F – B 3 L 1 S T
EP2F / EP1F SERIES
TYPICAL APPLICATION (H Bridge Type)
Wiring
Enclosure
Operate Voltage
(at 25˚C)
Contact Material
Type
Nil : H Bridge Type
T : Separate Type
Nil : Unsealed (Standard type)
T : Sealed
1 : 6.5 V max.
2 : 7.0 V max.
3 : 7.5 V max.
L, N : Silver oxide complex alloy, type I
G : Silver oxide complex alloy, type II
EP2F
EP1F
16 V
Tr1 Tr2
MOTOR Tr1 Tr2
STOP off off
FORWARD on off
REVERSE off on
Tr1
Tr2
M
100 ms min.
It is necessary to take more than 100 msec intervals for on / off timing between driving Tr1 and Tr2. If the interval
is less than 100 msec, an excessive current happen to flow to the relay contacts.
5
EP2F / EP1F SERIES
TECHNICAL DATA
Coil Temperature (EP2F-B3L1)
150
V
coil
= 12 V, IC = 25 A
V
coil
= 7.5 V, IC = 25 A
100
100
50
50
Coil Temperature Rise (˚C)
10 20
V
coil
= 12 V, IC = 0 A
coil
= 7.5 V, IC = 0 A
V
Coil Temperature Rise (˚C)
300
0.5 1.0 1.50
Energized Time (minutes)
Operate Time (EP2F-B3L1) Release time (EP2F-B3L1)
10
Mean
5
10
5
C
= 0A
I
Applied Power (W)
With Diode
2.0
Operate Time (ms)
0.5 1.0 1.50
Applied Power (W)
Release Time (ms)
Mean
Without Diode
0.5 1.0 1.50
Applied Power (W)
6
EP2F / EP1F SERIES
7
EP2F / EP1F SERIES
No part of this document may be copied in any form or by any means without the prior written consent of
NEC Corporation.
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 of others.
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