•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.
2006.03.24 P0691EMDD03VOL02E
The information in this document is subject to change without notice.
AUTOMOTIVE RELAYS
EX2/EX1 SERIES
DATA SHEET
DESCRIPTION
The new NEC EX2/EX1 series is PC-board mount type and the most suitable for various motor and heater
controls in the automobiles which require high quality and high performance.
The EX2 series is succeeding in about 60% of miniaturization in comparison with the ET2 series. The EX1 series
is succeeding in about 50% of miniaturization in comparison with the ET1 series.
FEATURES
• PC-board mounting
• Lead free solder is used
• Approx. 75% relay volume of ET2 • Approx. 65% relay volume of ET1
• Approx. 60% relay space of ET2 • Approx. 50% relay space of ET1
• Approx. 88% relay weight of ET2 • Approx. 78% relay weight of ET1
APPLICATIONS
• Motor control
• Solenoid control
EX2 SERIES EX1 SERIES
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” (ER0046EJ*) before dose designing your relay
applications.
•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.
2006.03.24 P0691EMDD03VOL02E
2
EX2/EX1 SERIES
SCHEMATIC (BOTTOM VIEW)
DIMENSIONS [mm]
PCB PAD LAYOUT [mm] (BOTTOM VIEW)
(Unit A) (Unit B)
EX2 EX1
67
8
9
10
1
2
3
45
1
2
3
4
5
VENT HOLE
13.6
±0.5
12.1
±0.5
13.7
±0.5
0.9
*3.5
+1.0/-0.5
EX2-2U1S
2A1 999
PHILIPPINES
PHILIPPINES
3.4
*
*2-0.4 x 1.1
3.4
6.05 5.25
0.75
5.25 6.05
0.75
3.95
4.55 5.35
3.4 3.35
3.95
5.35
3.4
*4-0.6 x 1.1
*4-0.4 x 0.7
7.5
±0.5
12.1
±0.5
13.7
±0.5
*3.5
+1.0/-0.5
EX1-2U1S
2B4 001
*0.4 x 1.1
3.95
2.2
*2-0.6 x 1.1
*2-0.4 x 0.7
3.4
4.55 5.35
2.3
0.35
3.0
0.9
EX2 EX1
AFTER
SOLDER DIP
2- 1.1
+0.1/-0
3- 1.5
+0.1/-0
2- 1.1
+0.1/-0
2- 1.4
+0.1/-0
2- 0.9
+0.1/-0
4- 1.5
+0.1/-0
φ
φφ
φ
φ
φ
EX2 EX1
•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.
2006.03.24 P0691EMDD03VOL02E
3
EX2/EX1 SERIES
SPECIFICATION
(at 20 °C)
SpecificationsItems
EX2 EX1
Contact Form 1c x 2 (Separate) 1c
Max. Switching Voltage 16Vdc
Max. Switching Current 30A (at16Vdc)
Min. Switching Current 1A (5Vdc)
Max. Carrying Current 35A (2minutes max. 12Vdc at 25°C)
30A (2minutes max. 12Vdc at 85°C)
20A (2minutes max. 12Vdc at 125°C)
Contact Rating
Contact Resistance 4mΩ typical (measured at 7A) initial
Contact Material Silver oxide complex alloy
Operate Time (Excluding Bounce) 2.5ms typical (at nominal voltage)
Release Time (Excluding Bounce) 3ms typical (at nominal voltage with diode)
Nominal Operate Power 900mW
Insulation Resistance 100MΩ at 500Vdc
Between Open Contact 500Vac min. (for 1minute)
Withstand Voltage
Between Contact and Coil 500Vac min. (for 1minute)
Misoperation 98m/s2
Shock Resistance
Destructive Failure 980m/s2
Misoperation 10 to 300Hz, 43m/s2
Vibration Resistance
Destructive Failure 10 to 500Hz 43m/s2, 200hour
Ambient Temperature -40 to +125 °C
Coil Temperature Rise 70°C / W (without contact carrying current)
Mechanical 1 x 106 operations
P/W motor lock
(14Vdc, 25A) 100x103 operations
Life
Expectancy Electrical
P/W motor free
(14Vdc, 25A/7A) 100x103 operations
Weight Approx. 6.4g Approx. 3.5g
COIL RATING
(at 20 °C)
Part Numbers Nominal Voltage
(Vdc)
Coil Resistance
(Ω)+/-10%
Must
Operate Voltage
(Vdc)
Must
Release Voltage
(Vdc)
EX2/1-2U1S
(Sealed type) 12 160 6.5 0.9
EX2/1-2U1
(Unsealed type) 12 160 6.5 0.9
•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.
2006.03.24 P0691EMDD03VOL02E
4
EX2/EX1 SERIES
NUMBERING SYSTEM
EX2/1-2 U 1 S
Enclosure Nil
S
: Unsealed
: Sealed
Must Operate Voltage
(at 20°C)
Contact Material
Coil Resistance
(at 20°C)
2: 160Ω
U: Silver oxide complex alloy
1: 6.5V
•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.
2006.03.24 P0691EMDD03VOL02E
5
EX2/EX1 SERIES
TECHNICAL DATA
Coil Temperature Rise
0
50
100
150
0 5 10 15
Time (min)
Coil Temperature Rise (°C)
16V
12V
6.5V
0
50
100
150
0 0.5 1 1.5
Coil Wattage (W)
Saturated Coil Temperature (°C)
•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.
2006.03.24 P0691EMDD03VOL02E
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EX2/EX1 SERIES
RELAY CHARACTERISTICS DISTRIBUTION (INITIAL, n = 25 pcs., at 20°C)
CDF (%)
CDF (%)
Operate/Release Voltage
Contact Resistance
Operate Time
Coil Resistance
Release Time
0.01
0.1
1
5
10
20
30
50
70
80
90
95
99
99.9
99.99
0 2 5 9 10
Operate/Release voltage (V)
CDF (%)
Operate voltage
Release voltage
0.01
0.1
1
5
10
20
30
50
70
80
90
95
99
99.9
99.99
0 5 10 15 20 25
Contact resistance (m
Ω
)
Contact resistance (N/O)
Contact resistance (N/C)
0.01
0.1
1
5
10
20
30
50
70
80
90
95
99
99.9
99.99
100 110 120 130 140 150 160 170 180 190 200
Coil resistance (Ω)
Coil resistance
0.01
0.1
1
5
10
20
30
50
70
80
90
95
99
99.9
99.99
6 7 8 9 10
Release time (ms)
CDF (%)
CDF (%)
Release Time
Release Time
(Excluding contact bounce)
(Including contact bounce)
with coil clump diode
0.01
0.1
1
5
10
20
30
50
70
80
90
95
99
99.9
99.99
6 7 8 9 10
Operate time (ms)
(Excluding contact bounce)
Operate Time
Operate Time
(Including contact bounce)
8
76431
0 2 5431 0 2 5431
•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.
2006.03.24 P0691EMDD03VOL02E
7
EX2/EX1 SERIES
ELECTRICAL LIFE TEST (14Vdc-25A, P/W motor, Lock)
Test items Test conditions Samples
1. Operate voltage
2. Release voltage
3. Contact resistance
4. Coil resistance
5. Operate time
6. Release time
(with coil clump diode)
Temperature :20°C
Frequency :0.2s ON, 9.8s OFF, 0.1Hz
Contact load :14Vdc-25A, P/W motor, Lock
Number of operations :100 x 103
EX2-2U1S
10 pcs
10
0
-50
10
0
-10
-20
-30
-40
50
40
30
20
-50
10
0
-10
-20
-30
-40
50
40
30
20
2
4
6
8
10
0
2
4
6
8
Initial
6.5V max.
0.9V min.
Voltage (V)
After test
Operate voltage Release voltage
Operate voltage Release voltage
Initial
Voltage (V)
Deviation (%)
Deviation (%)
After test
Initial After test Initial After test
•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.
2006.03.24 P0691EMDD03VOL02E
8
EX2/EX1 SERIES
1
10
100
25mΩ max.
1
10
100
25mΩ max.
100
110
120
130
140
150
160
170
180
190
200
160Ω±10%
0
2
4
6
8
10 10ms max.
0
2
4
6
8
10 10ms max.
Initial After test
Initial After test
Initial After test
Initial After test
Initial After test
Contact resistance
(N/O)
Contact resistance
(N/C)
Coil resistance
Operate time Release time
Resistance (mΩ)
Resistance (Ω)
Time (ms)
Time (ms) Resistance (mΩ)
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
NEC:
EX2-2U1S