A51CE12VDC1.9U

Relay Automotive Overview

The A51CE12VDC1.9U is an automotive electromechanical relay manufactured by CIT Relay and Switch, designed for through-hole PCB mounting. It features a single-pole double-throw (SPDT) contact configuration with one Form C. The coil operates at a rated voltage of 12 VDC with a maximum power consumption of 1.9W. The contacts are rated for a maximum switching current of 40A and a maximum switching voltage of 75VDC, utilizing silver tin oxide material to ensure reliable performance in high-current automotive applications.

Relay Automotive Feature Summary

• High switching capacity supporting up to 40A load currents
• Compact physical design suitable for space-constrained automotive environments
• Versatile mounting options including PCB pins and quick connect terminals

Relay Automotive Applications

• Automotive electrical systems
• Lamp accessories control
• General automotive relay circuits

Relay Automotive Procurement Notes

Verify the specific suffix 'U' against official CIT documentation to confirm terminal configuration or variant specifics. Ensure compatibility with 12VDC control circuits and validate that the SPDT contact form meets the target application's circuit requirements. Confirm RoHS compliance status if required by project specifications.

Relay Automotive Selection Notes

Select this component when a robust SPDT relay is needed for 12VDC automotive loads up to 40A. Consider the 75VDC switching limit and AgSnO contact material for durability. Evaluate the through-hole mounting style against available board space and thermal constraints compared to surface-mount alternatives.

Relay Automotive Part Context

This part belongs to the CIT automotive relay family, characterized by high current handling and compact form factors. The manufacturer specializes in electromechanical relays compliant with industry standards such as ISO-9002, targeting durable solutions for vehicle and accessory electronics.

Relay Automotive Replacement Considerations

Cross-reference with other CIT models sharing the 12VDC coil and SPDT contact form. Verify identical pinout and mechanical dimensions before substituting to ensure board compatibility without redesign.