A21CCQ12VDC1.9

Relay Automotive Overview

The A21CCQ12VDC1.9 is an automotive-grade SPDT relay manufactured by CIT Relay and Switch, designed for high-current switching applications. It features a 12VDC coil with a rated power consumption of 1.9W and a contact arrangement of 1 Form C. The device supports a maximum switching current of 40A at 14VDC and can handle up to 75VDC. Key electrical parameters include a coil resistance of 75.8 Ohms and a contact resistance of less than 30 milliohms initially. The unit utilizes AgSnO2 contact material and offers both PCB pin and quick connect mounting options.

Relay Automotive Feature Summary

• Large switching capacity supporting up to 40A
• Compact physical design with reduced weight
• Versatile mounting flexibility via PCB pins or quick connectors

Relay Automotive Applications

• Automotive electrical systems
• Lamp accessories control
• High-current circuit switching

Relay Automotive Procurement Notes

Verify the specific suffix '1.9' against official CIT documentation to confirm the 1.9W coil rating and 75.8 Ohm resistance values. Ensure compatibility with required mounting styles (PCB vs. Quick Connect) as the base model may support multiple variants. Confirm RoHS compliance status and manufacturing certifications such as QS-9000 or ISO-9002 if required for your supply chain standards.

Relay Automotive Selection Notes

Select this component when a robust SPDT relay is needed for automotive environments requiring high current handling up to 40A. The 12VDC coil voltage aligns with standard vehicle electrical architectures. Consider the small size and light weight advantages for space-constrained installations. Verify that the 75VDC maximum switching voltage meets the load requirements of the target application circuit.

Relay Automotive Part Context

This relay belongs to the A21 series from CIT Relay and Switch, characterized by large switching capacities and compact form factors. The series is certified under QS-9000 and ISO-9002 standards, indicating suitability for automotive and industrial applications. The A21CCQ variant specifically denotes the SPDT configuration with dust cover and diode protection options in related models.

Relay Automotive FAQ

What is the contact material used in the A21CCQ12VDC1.9?

The contacts are made of Silver Tin Oxide (AgSnO2).

Does this relay have a latching mechanism?

No, the A21CCQ12VDC1.9 is a non-latching relay.