Relay RE42
12 V 85 Ohm Coil
40A/30A SPDT

Product Use

This 12 VDC Relay is especially developed for Automotive use as servo change over switch.

Low current (Typically 140 to 150 milliAmperes) through the Relay Coil electromechanically switches ON a High current Load (up to 40A).

In constant ON applications it can carry up to 40 Amperes, while in pulsed applications up to 30 Amperes may be switched momentarily.

Millions of these devices have been reliably used since 1987 in following applications:


RE 40

Product Specifications

RE 40
Coil source voltage (max) VDS 18 V
Coil on-state resistance RDS(on) 85 Ohm
Continuous drain current TC = 25 °C ID 40 A
Continuous drain current TC = 100 °C ID 30 A
Pulsed drain current TC = 25 °C ID 30 A
Power dissipation TC = 25 °C P 1.7 W
Coil threshold voltage VC(th) <8 V

Typical Circuit

Relay Switch Circuit Diagram

Connection Diagram

Relay Connection Diagram
Relay Contact Diagram

Cross Reference


US $9.00 each

Inquire for pricing and availability on purchases of 100 units or more