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Automotive relay delivers small size

FCL’s FBR53-LE automotive relay with a low profile offers lower power consumption and generates less heat.

FCL Components America, Inc. has claimed the industry’s smallest automotive-grade, PCB-mounted relay for applications such as electric power steering, blower fan motor control and starters. The new FBR53-LE 40-A automotive relay claims a more than 2-mm lower height than other relays in its class, targeting compact designs.

FCI Components America's FBR53-LE 40-A automotive relay.

Source: (FCI Components America, Inc.)

The FBR53-LE is a 1 Form U (Form A with twin contacts) relay that measures 15.7(L) x 12.3(W) x 14(H) mm, with a volume of 2,704 mm3. Key specifications include a maximum carrying current of 54 A for one hour, maximum inrush current of 200 A, a contact rating of 14 VDC, 40 A and a nominal coil power of 640 mW. The operating temperature ranges from -40°C to 125°C degrees, making it suited for engine compartments.

The FBR53-LE was developed as a follow-up to the company’s FBR53-HW 40-A relay, as a lower heat and lower power consumption relay, driven by customer requests. The FBR53-LE can seamlessly replace the FBR53-HW, FCL said, without altering its terminal arrangement.

The single-pole FBR53-LE can switch heavy loads for fuel and electric vehicle (EV) applications including electric power steering, blower/fan motor, starter controller and infotainment systems. By reducing the power consumption of the FBR53-LE coil (W = V x I = V2 / R) compared to the FBR53-HW, FCL said, it can suppress heat generation and can also reduce battery consumption in EVs and other vehicles with limited battery power.

This plastic sealed-type relay is RoHS compliant and uses a silver-tin-oxide material for the contacts. The FBR53-LE can replace the mini ISO, and a reflow capable (through hole reflow) type is also available. Samples are available now.

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