A21CSQ12VDC1.6D

Relay Automotive Overview

The A21CSQ12VDC1.6D is an automotive relay manufactured by CIT Relay and Switch, designed for high-current switching applications. It features a single-pole double-throw (SPDT) contact arrangement with one normally open and one normally closed circuit. The coil operates at a rated voltage of 12VDC with a power consumption of 1.6W. The contacts are rated to handle up to 40A at 14VDC, supporting a maximum switching voltage of 75VDC and a maximum switching power of 630W. The unit utilizes silver tin oxide (AgSnO2) contact material to ensure durability and low initial contact resistance.

Relay Automotive Feature Summary

• High current switching capacity suitable for demanding automotive loads
• Compact physical design with lightweight construction for space-constrained installations
• Versatile mounting options including PCB pins and quick connect terminals
• Manufacturing processes certified under QS-9000 and ISO-9002 standards

Relay Automotive Applications

• Automotive electrical systems
• Lamp accessories control
• High-current load switching in vehicles

Relay Automotive Procurement Notes

Verify the specific contact configuration suffix against project requirements, as the A21 series includes variations such as SPST and SPDT arrangements. Confirm that the 12VDC coil voltage aligns with the target vehicle's electrical architecture. Ensure compatibility with the chosen mounting method, whether through PCB pins or quick connect terminals, to match the assembly design. Cross-reference the latest manufacturer datasheet to confirm that specifications remain unchanged without prior notice.

Relay Automotive Selection Notes

Select this component when a reliable SPDT relay is required for automotive environments with high current demands. The 1.6W coil power indicates a moderate drive requirement, suitable for standard automotive control modules. The AgSnO2 contact material offers robust performance against arcing and welding common in inductive loads. Consider the physical dimensions and terminal style during PCB layout or harness integration to ensure proper fit and connection stability within the designated compartment.

Relay Automotive Part Context

This part belongs to the CIT A21 series of automotive relays, which are engineered for reliability in harsh operating conditions. The series is characterized by its ability to handle significant electrical loads while maintaining a small footprint. Manufacturing certifications ensure consistent quality for automotive supply chains. The specific model denotes the 12V coil variant with the associated 1.6W power rating and SPDT contact form.

Relay Automotive Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify pinout compatibility and electrical ratings if considering alternative manufacturers. Ensure any replacement meets the same QS-9000 and ISO-9002 certification standards required for automotive applications.