A42US12VDC

Relay Automotive Overview

The A42US12VDC is a dual package automotive relay manufactured by CIT Relay and Switch. It features a compact design suitable for space-constrained applications, utilizing PC pin or quick-connect mounting options. The unit supports a coil voltage of 12 VDC with a rated power consumption of 1.6W. Contact arrangements include SPST normally open (1A) and SPDT (1C) configurations, providing high switching capacity up to 40A at 14VDC. The device operates within a temperature range of -40°C to 85°C and complies with QS-9000 and ISO-9002 manufacturing standards.

Relay Automotive Feature Summary

• Dual package configuration offering two independent relays in a single compact housing
• High switching capacity supporting up to 40A current loads for automotive circuits
• Versatile mounting options including PCB pins and quick-connect terminals
• Certified manufacturing process ensuring reliability under QS-9000 and ISO-9002 standards

Relay Automotive Applications

• Automotive electrical systems
• Lamp accessories control
• General purpose switching circuits requiring high current capacity

Relay Automotive Procurement Notes

Verify the specific contact arrangement required for your application, as the series includes both SPST and SPDT variants. Confirm that the 12VDC coil voltage aligns with your system's power supply specifications. Ensure the mounting method matches your PCB layout or harness requirements. Check for RoHS compliance status if environmental regulations apply to your project. Validate the operating temperature range against your intended environment.

Relay Automotive Selection Notes

Select this component when space efficiency is critical due to its dual package design. Choose the appropriate contact form based on whether single pole or changeover switching is needed. Consider the 40A rating for heavy-load applications compared to standard lower-current relays. Evaluate the mounting style compatibility with your assembly process. Ensure the coil resistance and power consumption fit your driver circuit capabilities.

Relay Automotive Part Context

This part belongs to the CIT Micro ISO automotive relay series, designed for demanding vehicular environments. The series is characterized by small size, light weight, and high current handling capabilities. It serves as a robust solution for replacing traditional bulky relays in modern vehicle architectures where space and weight are optimized constraints.

Relay Automotive Replacement Considerations

Direct substitutes may include other Micro ISO format relays from CIT with identical pinout and electrical ratings. Verify coil voltage and contact arrangement before substitution. Cross-reference with equivalent automotive relay standards such as ISO 8820 dimensions. Ensure thermal and mechanical characteristics match the original design intent.