DATA SHEET
AUTOMOTIVE RELAYS
EP1K SERIES
DESCRIPTION
The new NEC TOKIN EP1K series is PC-board mount type and suitable for various heaters, fans and pumps, etc.
controls in the automobiles which require high quality and high performance.
The EP1K series was developed based on the EP1 series and the performance of carrying current is about 10A
larger than the EP1F relay.
FEATURE
・Large current capacity (54A 1hour at 20℃ , Approx. 10A larger than the EP1F)
・High heat resistance
・Flux tight housing
・Pb free
・Through-hole reflow soldering available
APPLICATION
・Heater control
・Motor control such as fans and pumps
For Proper Use of Miniature Relays DO NOT EXCEED MAXIMUM RATING
Do not use relay under excessive conditions such as over ambient temperature, over voltage and over current.
Incorrect use could result in abnormal heating and damage to the relay or other parts.
READ CAUTIONS IN THE SELECTION GUIDE
Read the cautions described in NEC s Miniature Relays (9600RSGVOL11E1003N1) before dose designing
your relay applications.
The information in this document is subject to change without notice.
© NEC TOKIN Corporation 2010
●All specifications in this catalog and production status of products are subject to change without notice. Prior to the purchase, please contact NEC TOKIN for updated product data.
●Please request for a specification sheet for detailed product data prior to the purchase.
●Before using the product in this catalog, please read "Precautions" and other safety precautions listed in the printed version catalog.
2010.07.21 9600PDAVOL01E
EP1K SERIES
SCHEMATIC (BOTTOM VIEW)
3
4
5
2
6
7
1
8
DIMENSIONS [mm]
Company Name
Country of Origin
Vent Hole
（Sealed/Unsealed)
PHILIPPINES
Lot Code EP1K-B3G1
9B1999
Part Number
16.2±0.5
3.7
3.7
3.1
（2.65）
3.1
4.1
2.2
2−φ0.6
2−1.3 ×1.3
6.4
10.1
8.0
3.5
＊2.8
0.8
6.4
0.8
5.45
17.0±0.5
1.5
14.6±0.5
4−0.5 ×1.1
* After soldering
PCB PAD LAYOUT [mm] (BOTTOM VIEW)
＋0.1
2−φ1.1 −0
＋0.1
4−φ1.5 −0
＋0.1
2−φ1.9 −0
2
●All specifications in this catalog and production status of products are subject to change without notice. Prior to the purchase, please contact NEC TOKIN for updated product data.
●Please request for a specification sheet for detailed product data prior to the purchase.
●Before using the product in this catalog, please read "Precautions" and other safety precautions listed in the printed version catalog.
2010.07.21 9600PDAVOL01E
EP1K SERIES
SPECIFICATIONS
(Ambient Temperature 20°C)
Items
Specifications
Contact Form
1 Form C
Contact
Ratings
Maximum Switching Voltage
16VDC
Maximum Switching Current
30A
Minimum Switching Current
1 A (5VDC)
Maximum Carrying Current
54A at 14VDC for 1hour *1
Contact Resistance
4mΩ typical (measured at 7A) initial
Contact Material
Silver oxide complex alloy
Operate Time (Excluding bounce)
5ms typical（at Nominal Voltage）
Release Time (Excluding bounce)
2ms typical（at Nominal Voltage, without diode) initial
8ms typical (at Nominal Voltage, with diode) initial
Nominal Operating Power
0.64W
Coil Temperature Rise
Approx. 45℃ /W (contact carrying current 0A）
Insulation Resistance
100MΩ at 500VDC
Withstand
Voltage
Between open contacts
500VAC (for 1minute)
Between coil and contacts
500VAC (for 1minute)
Shock
Resistance
Misoperation
98m/s2 (10G)
980m/s2 (100G)
Destructive Failure
10 to 300Hz，43m/s2 (4.4G)
Misoperation
Vibration
Resistance
10 to 500Hz ，43m/s2 (4.4G)，200 hours
Destructive Failure
Ambient Temperature
− 40 to ＋ 125℃
1 x 106 operations
Non-load
Running
Specifications
Load (Motor load)
100 × 103 operations (at 25℃，14VDC，Lock 25A / Steady 7A）
100 × 103 operations（at 125℃，14VDC，Lock 18A / Steady 5A)
Weight
Approx. 8g
*1 Mounted on PC-board: FR-4 (Thickness; 1.6mm), Copper (Thickness; 105μm,Width; 15mm）
COIL RATING
(Ambient temperature:20°C)
Part Numbers
Nominal
Voltage
(VDC)
Coil
Resistance
(Ω) ± 10%
Must
Operate Voltage*2
(VDC)
Must
Release Voltage*2
(VDC)
EP1K-B3G1
12
225
6.5
0.9
*2 Test by pulse voltage
PART NUMBER SYSTEM
EP1K – B3 G 1 S
Type
Enclosure
Nil : Unsealed
S : Sealed
Must Operate Voltage 1 : 6.5V
Contact Material
G : Silver oxide complex alloy
3
●All specifications in this catalog and production status of products are subject to change without notice. Prior to the purchase, please contact NEC TOKIN for updated product data.
●Please request for a specification sheet for detailed product data prior to the purchase.
●Before using the product in this catalog, please read "Precautions" and other safety precautions listed in the printed version catalog.
2010.07.21 9600PDAVOL01E
EP1K SERIES
TECHNICAL DATA
Coil Temperature Rise
(Mounted on PC-board: FR-4 (Thickness; 1.6mm), Copper (Thickness; 105μm,Width; 15mm)
(Ambient Temperature 20°C)
100
90
Coil temperature (°
C)
80
16V
70
14V
60
12V
50
9V
40
30
20
10
0
0.0
5.0
15.0
10.0
Time (min)
100
Saturated coil temperature (°
C)
90
80
70
60
50
40
30
20
10
0
0
0.2
0.4
0.6
0.8
1
1.2
Coil wattage (W)
4
●All specifications in this catalog and production status of products are subject to change without notice. Prior to the purchase, please contact NEC TOKIN for updated product data.
●Please request for a specification sheet for detailed product data prior to the purchase.
●Before using the product in this catalog, please read "Precautions" and other safety precautions listed in the printed version catalog.
2010.07.21 9600PDAVOL01E
EP1K SERIES
RELAY CHARACTERISTICS DISTRIBUTION (INITIAL)
Specimen
: EP1K-B3G1S
Ambient Temperature : 20°
C
Quantity
:50pcs.
Operate/Release Voltage
99.99
Operate voltage
99.9
Release voltage
CDF (%)
99
95
90
80
70
50
30
20
10
1
0.1
0.01
0
1
2
3
4
5
6
7
8
9
10
Operate/Release voltage (V)
Coil Resistance
Contact Resistance
99.99
99.99
Contact resistance (N/O)
Coil resistance
99.9
Contact resistance (N/C)
99
99
95
90
80
70
95
90
80
70
CDF (%)
CDF (%)
99.9
50
30
20
10
5
50
30
20
10
5
1
1
0.1
0.1
0.01
0
5
10
15
20
25
30
35
40
45
0.01
150
50
200
Operate time
300
Release time
99.99
99.99
Operate Time
(Excluding contact bounce)
99.9
Release Time
(Excluding contact bounce)
99.9
Operate Time
(Including contact bounce)
99
Release Time
(Including contact bounce)
99
95
90
80
70
CDF (%)
CDF (%)
250
Coil resistance (Ω)
Contact resistance (mΩ)
50
30
20
10
5
95
90
80
70
50
30
20
10
5
1
1
0.1
0.1
0.01
0.01
with coil clump diode
0
1
2
3
4
5
6
Operate time (ms)
7
8
9
10
0
5
10
15
Release time (ms)
5
●All specifications in this catalog and production status of products are subject to change without notice. Prior to the purchase, please contact NEC TOKIN for updated product data.
●Please request for a specification sheet for detailed product data prior to the purchase.
●Before using the product in this catalog, please read "Precautions" and other safety precautions listed in the printed version catalog.
2010.07.21 9600PDAVOL01E
EP1K SERIES
ELECTRICAL LIFE TEST (14VDC-25A, P/W motor, Lock)
Test items
1.
2.
3.
4.
5.
6.
Operate voltage
Release voltage
Contact resistance
Coil resistance
Operate time
Release time
(with coil clump diode)
Test conditions
Samples
Temperature
: 20°
C
Frequency
: 0.1Hz (0.2s ON, 9.8s OFF)
Contact load
: 14VDC-25A, P/W motor, Lock
Number of operations : 100 × 103
EP1K-B3G1S
10 pcs
10
10
8
8
6
Voltage (V)
Voltage (V)
6.5V max.
4
2
6
4
2
0.9V min.
0
0
Initial
After test
Initial
Operate voltage
After test
Release voltage
50
50
40
30
30
20
20
10
10
Deviation (%)
Deviation (%)
±40%
40
0
-10
0
-10
-20
-20
-30
-30
-40
-40
-50
±40%
-50
Initial
After test
Operate voltage
Initial
After test
Release voltage
6
●All specifications in this catalog and production status of products are subject to change without notice. Prior to the purchase, please contact NEC TOKIN for updated product data.
●Please request for a specification sheet for detailed product data prior to the purchase.
●Before using the product in this catalog, please read "Precautions" and other safety precautions listed in the printed version catalog.
2010.07.21 9600PDAVOL01E
EP1K SERIES
100
100
50mΩ max.
Resistance (mΩ)
Resistance (mΩ)
50mΩ max.
10
1
10
1
Initial
After test
Initial
After test
Contact resistance (N/C)
Contact resistance (N/O)
250
225Ω±10%
Resistance (mΩ)
240
230
220
210
200
Initial
After test
Coil resistance
10
10ms max.
8
8
6
6
Time (ms)
Time (ms)
10
4
2
10ms max.
4
2
0
0
Initial
After test
Operate time
Initial
After test
Release time
7
●All specifications in this catalog and production status of products are subject to change without notice. Prior to the purchase, please contact NEC TOKIN for updated product data.
●Please request for a specification sheet for detailed product data prior to the purchase.
●Before using the product in this catalog, please read "Precautions" and other safety precautions listed in the printed version catalog.
2010.07.21 9600PDAVOL01E
EP1K SERIES
CARRYING CURRENT PERFORMANCE
Test items
Carrying current
Test conditions
Coil wattage
Temperature
Mounting conditions
PC board
Cu pattern thickness
Pattern size
Failuer mode
Samples
: 0.87W
（ 225 Ω ,14VDC）
: 20°
C
: Mounted on NT's PC board
FR-4, t1.6
105μm
15mm(width) × 100mm(length)
: Coil layer short
EP1K-B3G1S
EP1F-B3G1S
5 pcs for each
10000
1000
EP1K relay
Time (s)
EP1F relay
100
30A Fuse
10
1
40
50
40A Fuse
60
50A Fuse
70
80
90
100
Carrying current (A)
8
●All specifications in this catalog and production status of products are subject to change without notice. Prior to the purchase, please contact NEC TOKIN for updated product data.
●Please request for a specification sheet for detailed product data prior to the purchase.
●Before using the product in this catalog, please read "Precautions" and other safety precautions listed in the printed version catalog.
2010.07.21 9600PDAVOL01E