DATA SHEET
AUTOMOTIVE RELAYS
EP2F/EP1F SERIES
HIGH HEAT RESISTIVITY
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 carrying 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
APPLICATIONS
™
Power window control
™
Power sunroof
™
Wiper system
EP2F SERIES
EP1F SERIES
Document No. ER0145EJ1V0DS00
Date Published December 1995 M
Printed in Japan
©
1995
EP2F / EP1F SERIES
SCHEMATIC (BOTTOM VIEW)
EP2F SERIES
2
4
1
3 9
4
1
EP1F SERIES
2
3
4
2
1
3
8
5 6
7
10
5 6
7
8
5
[Unit A]
[Unit B]
[Unit A]
[Unit B]
[H Bridge Type]
[Separate Type]
DIMENSIONS mm (inch)
EP2F SERIES
H Bridge Type
Vent hole
JAPAN
Separate Type
Separate type
discrimination mark
Vent hole
JAPAN
φ
2(0.079)
Date code
Part number
Part number
EP2F-B3L2
0G3 24
Date code
EP2F-B3L2T
0G3
24
23.8 + 0.5
–
(0.94)
0.5(0.02)
16.0 + 0.5
–
(0.63)
16.2 + 0.5
–
(0.64)
23.8 + 0.5
–
(0.94)
0.5(0.02)
16.0 + 0.5
–
16.2 + 0.5
–
(0.64)
3.5
(0.14)
3.5
10.1
8.0
5.45 (0.21)
(0.21)
(0.4)
(0.31)
3.5
(0.14)
(0.32) (0.32)
10.1
8.0
5.45 (0.21)
(0.4)
(0.31)
3.5
(0.14)
2-0.5×1.1(0.02×0.04)
3.1 (0.12)
4 -0.5×1.1(0.02×0.04)
2.2
(0.09)
3.1
(0.12)
5.45 (0.21)
6.4 (0.25)
5.45 (0.09)
(0.21)
6.4 (0.25)
(0.14)
(0.63)
2.2
(0.09)
(0.14) 3.5
(0.31)
(0.4)
(11.9)
3.1
(0.12)
2.2
(0.09)
8.0
10.1
(11.9)
2 -1.3×1.3(0.05×0.05)
4 -
φ
0.6(
φ
0.22)
∗
for reference
(0.14) 3.5
(0.31)
(0.4)
(11.9)
8.0
10.1
(11.9)
2 -1.3×1.3(0.05×0.05)
4 -
φ
0.6(
φ
0.22)
∗
for reference
2
(0.32) (0.32)
8.1
∗
8.1
∗
8.1
∗
8.1
∗
2.2
6.4
EP2F / EP1F SERIES
EP1F SERIES
Vent hole
JAPAN
Date code
Part number
EP1F-B3G1
4A 1 22
14.6 + 0.5
–
(0.58)
16.2 + 0.5
–
(0.63)
16.0 + 0.5
–
3.5
0.5(0.02)
10.1(0.4)
8.0(0.31)
2-
φ
0.6
(
φ
0.02)
3.5
(0.14)
3.1 (0.12)
(0.21)
2.2
(0.09)
5.45
(0.25)
6.4
2.65
∗
(0.1)
(0.14)
(0.63)
1.3×1.3
(1.5×1.5)
2-0.5×1.1
(0.02×0.02)
∗
for reference
PCB PAD LAYOUT mm (inch) (BOTTOM VIEW)
EP2F SERIES
4-
φ
1.1
+0.1
(
–0
EP1F SERIES
1.5
+0.1
(
–0
φ
0.043)
2-
φ
φ
0.059)
4-
φ
1.1
+0.1
(
–0
φ
0.043)
4-
φ
1.5
+0.1
(
–0
φ
0.059)
2 -
φ
1.1
+0.1
–0
(
φ
0.043)
2 -
φ
1.5
+0.1
–0
(
φ
0.059)
φ
1.9
+0.1
–0
(
φ
0.075)
2 -
φ
1.9
+0.1
(
φ
0.075)
–0
[H Bridge Type]
[Separate Type]
2 -
φ
1.9
+0.1
(
φ
0.075)
–0
3
EP2F / EP1F SERIES
SPECIFICATIONS
Items
Contact Form
Contact Material
Contact Resistance
Contact Switching Voltage
Contact Switching Current
Contact Carrying Current
EP2F
1 form C×2 (H bridg type and separate type)
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)
30 A (2 minutes max. 12 Vdc at 85˚C)
25 A (2 minutes max. 12 Vdc at 125˚C)
40 A (2 minutes max. 12 Vdc at 25˚C)
35 A (2 minutes max. 12 Vdc at 85˚C)
30 A (2 minutes max. 12 Vdc at 125˚C)
1 form C
EP1F
at 25 ˚C (77 ˚F)
Operate Time
Release Time
Normal Operate Power
Insulation Resistance
Breakdown Voltage
Shock Resistance
Vibration Resistance
Ambient Temperature
Coil Temperature Rise
Mechanical
Life Expectancy
Electrical
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 / s
2
[Approx. 10 G] min. (misoperating)
10 to 300 Hz, 43 m / s
2
[Approx. 4.4 G] min. (misoperating)
–40 ˚C to +125 ˚C (–40 ˚F to +257 ˚F)
50 ˚C / W (without contact carrying current)
1×10
6
operations
Contact 1×10
5
operations (at 14 Vdc, Motor Load 25 A / 7 A) at 25 ˚C
G
1×10
5
operations (at 14 Vdc, Motor Load 18 A / 5 A) at 125 ˚C
Contact 1×10
5
operations (at 14 Vdc, Motor Load 20 A / 3 A) at 25 ˚C
L or N 1×10
5
operations (at 14 Vdc, Motor Load 12 A / 2 A) at 125 ˚C
Weight
Approx. 15 gr
Approx. 8 gr
COIL RATING
EP2F SERIES
Part Number
H Bridge Type
EP2F-B3G1
Contact
G
EP2F-B3G2
EP2F-B3G3
EP2F-B3L1
Contact
L or N
EP2F-B3L2
EP2F-B3L3
Separate Type
EP2F-B3G1T
EP2F-B3G2T
EP2F-B3G3T
EP2F-B3L1T
EP2F-B3L2T
EP2F-B3L3T
Nominal
Voltage
(Vdc)
12
12
12
12
12
12
Coil
Resistance
(Ω +10 %)
–
225
225
225
225
225
225
at 25 ˚C (77 ˚F)
Must
Must
Nominal
Operate Voltage Release Voltage Operate Power
(Vdc max.)
(Vdc min.)
(W)
605
7.0
7.5
6.5
7.0
7.5
0.9
0.9
0.9
0.9
0.9
0.9
0.64
0.64
0.64
0.64
0.64
0.64
EP1F SERIES
Nominal
Voltage
(Vdc)
EP1F-B3G1
Contact
G
EP1F-B3G2
EP1F-B3G3
EP1F-B3L1
Contact
L or N
EP1F-B3L2
EP1F-B3L3
12
12
12
12
12
12
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
Release Voltage
(Vdc min.)
0.9
0.9
0.9
0.9
0.9
0.9
Nominal
Operate Power
(W)
0.64
0.64
0.64
0.64
0.64
0.64
Part Number
4
EP2F / EP1F SERIES
NUMBERING SYSTEM
EP2F
–
B
3
L
1
S
T
Nil : H Bridge Type
Wiring
T : Separate Type
Nil : Unsealed (Standard type)
T : Sealed
1 : 6.5 V max.
Operate Voltage
(at 25˚C)
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
Enclosure
Contact Material
EP2F
Type
EP1F
TYPICAL APPLICATION (H Bridge Type)
16 V
M
Tr1
Tr2
MOTOR
STOP
FORWARD
REVERSE
Tr1
off
on
off
Tr2
off
off
on
Tr1
Tr2
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
