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EX1 Series

Features | Specifications | Coil Rating | Dimensions | PCB Pad Layout | Schematics | Part Number System

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Features

The EX series relays are the 4th generation from NEC. They are much smaller and lighter weight than previous generations of single/dual relays, yet have a higher capability, and are designed to be lower cost.

The EX1 is a PC-mount, fully-sealed, high-density single 1 form C relay. The EX1 relay is intended for automotive loads up to 30A, up to 125° C ambient, and is compatible with pin-in-paste reflow soldering processes.
  • Ultra miniature single relay for high PC board density
  • 35% less volume and 50% smaller footprint than 3rd generation relays
  • High performance & productivity by unique structure
  • Flux tight housing

Specifications

Contact Form 1c
Contact Rating Max. Switching Voltage 16 Vdc
Max. Switching Current 30 A (at 16 Vdc)
Min. Switching Current 1 A (5 Vdc)
Contact Resistance 4 mOhm 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 900 mW
Insulation Resistance
100 MOhm (at 500 Vdc)
Withstand Voltage Between Open Contact
500 Vac min. (for 1 minute)
Between Coil and Contact 500 Vac min. (for 1 minute)
Shock Resistance Misoperation 98 m/s2
Destructive Failure 980 m/s2
Vibration Resistance Misoperation 10 to 300 Hz, 43 m/s2
Destructive Failure 10 to 500 Hz, 43 m/s2, 200 hours
Ambient Temperature -40 to +125°C
Life Expectancy Mechanical 1 x 108 operations
Electrical P/W motor lock (14Vdc, 25A) 100 x 103 operations
P/W motor free (14Vdc, 25A/7A) 100 x 103 operations
Weight Approx. 3.5 g

Coil Rating

Part Number
 Nominal
Voltage
(Vdc)		 Coil
Resistance
(Ohm) ±10%		 Must
Operate
Voltage
(Vdc)		 Must
Release
Voltage
(Vdc)
EX1U1S (Sealed type) 12 160 6.5 0.9
EX1U1S (Unsealed type) 12 160 6.5 0.9

Dimensions

mm

PCB Pad Layout

(bottom view) mm

Schematics

(bottom view)

Part Number System

EX1
 - 2
1		 U
2		 1
3		 S
4		 J
5
1 Coil resistance (at 20° C)
2: 160 Ohm
2 Contact material
U: Silver oxide complex alloy
F: Lamp (Form A)
3 Must operate voltage (at 20° C)
1: 6.5 V
4 Enclosure
Nil: Unsealed
S: Sealed
5 Terminal Length
Nil: Long length (3.5 +1.0/-0.5)
J: Standard (2.8 +1.0/-0.5)

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NEC Miniature Power Relays

Notes on Correct Use

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World Products Inc., 19654 8th St. East, Sonoma, CA 95476 USA
Phone: (707) 996-5201 Fax: (707) 996-3380 E-mail: sales@worldproducts.com

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Last updated: 11-17-05