A2F1ASQ12VDC1.9D

Relay Automotive Overview

The A2F1ASQ12VDC1.9D is an automotive relay manufactured by CIT Relay and Switch, designed for chassis mounting applications. It features a single-pole single-throw normally open (SPST-NO) contact configuration with a maximum switching voltage of 75V DC. The coil operates at 12V DC, drawing 133.3 mA with a resistance of 90 Ohms and consuming 1.6W of power. The contacts are rated for 40A and utilize silver tin oxide material. Key timing parameters include a working time of 7 ms and a release time of 5 ms. The unit is sealed and operates within a temperature range of -40°C to 125°C.

Relay Automotive Feature Summary

• Sealed construction suitable for harsh automotive environments
• Chassis mount design with quick connect termination style
• Silver tin oxide contact material for durability

Relay Automotive Applications

• Automotive electrical systems
• Industrial control circuits
• General purpose switching applications

Relay Automotive Procurement Notes

Verify the specific ordering suffix against the manufacturer's current catalog to ensure compatibility with required coil voltage and contact configuration. Confirm that the chassis mount footprint matches the intended PCB or panel layout. Check for RoHS compliance status if environmental regulations apply to the end product. Ensure the quick connect terminal dimensions align with existing harness connectors.

Relay Automotive Selection Notes

Select this component when a 12V DC coil actuation is required for high-current switching up to 40A in automotive contexts. The SPST-NO configuration is appropriate for simple on/off load control. Consider the 75V DC maximum switching voltage limit when designing circuits with higher potential differences. The sealed nature of the relay makes it suitable for exposed installations where moisture protection is necessary.

Relay Automotive Part Context

This part belongs to the A2 series of automotive relays from CIT Relay and Switch. The series is characterized by robust construction and standardized pinouts for easy integration into vehicle architectures. The A2F1ASQ variant specifically denotes the SPST-NO configuration with quick-connect terminals. This family is widely used in OEM and aftermarket automotive electronics for reliable power distribution.

Relay Automotive Replacement Considerations

Direct substitutes may include other CIT Automotive Relays with identical pinout and electrical ratings, such as the A2S1ASQ12VDC1.6. Verify mechanical dimensions and terminal type before substitution. Cross-reference with standard ISO relay specifications if generic replacement is preferred.