A21ACQ12VDC1.6R

Relay Automotive Overview

The A21ACQ12VDC1.6R is a CIT Relay and Switch automotive relay featuring an SPST-NO (1 Form A) contact arrangement rated for 40A at 14VDC. It utilizes a 12VDC coil with 90 Ohms resistance and 133.3 mA current draw, consuming 1.6W power. The unit operates within a -40°C to 125°C temperature range and employs silver tin oxide contacts. Designed for socketable installation with quick connect terminals (0.250"/6.3mm), it offers a 7 ms operate time and 5 ms release time.

Relay Automotive Feature Summary

• High switching capacity up to 40A in a compact form factor
• Sealed construction suitable for demanding automotive environments
• Compatible with standard Mini ISO sockets for easy integration

Relay Automotive Applications

• Automotive lighting circuits
• Vehicle accessory power distribution
• Industrial control systems requiring high current switching

Relay Automotive Procurement Notes

Verify the specific suffix 'R' against the manufacturer's latest documentation to confirm if it denotes a specific tape-and-reel packaging format or a minor variant distinct from the standard bulk tray configuration. Ensure compatibility with Mini ISO socket bases during system design. Cross-reference the RoHS status and REACH compliance data provided in the official datasheet to meet regional regulatory requirements before finalizing procurement orders.

Relay Automotive Selection Notes

Select this component when a 40A single-pole normally open switch is required for 12VDC automotive applications. The socketable design simplifies assembly and maintenance compared to direct PCB mounting options. Consider the 1.6W coil power consumption and 90 Ohm resistance for driver circuit sizing. The wide operating temperature range supports use in harsh under-hood or external vehicle locations where thermal stability is critical.

Relay Automotive Part Context

This model belongs to the CIT A2 series of automotive relays, characterized by robust sealing and high current handling capabilities. The A21ACQ12VDC1.6R specifically denotes the socketable version with quick-connect terminals, distinguishing it from PCB-pin variants like the A2M series. This series is widely utilized in global automotive manufacturing for its reliability and standardized footprint compatible with common relay sockets.

Relay Automotive Replacement Considerations

Direct substitutes include the A2S1ASQ12VDC1.6 and A21ASQ12VDC1.6R, which share identical electrical ratings and physical dimensions. Verify that replacement units maintain the same socketable interface and terminal style to ensure mechanical fit without adapter modifications.