A21CSQ6VDC1.6D

Relay Automotive Overview

The A21CSQ6VDC1.6D is an automotive SPDT relay manufactured by CIT Relay and Switch. It features a 6 VDC coil with a resistance of 22.5 Ohms and a power consumption of 1.6W. The contacts utilize Silver Tin Oxide (AgSnO) material, supporting a maximum switching voltage of 75VDC and a current rating up to 40A. The unit measures 26x26x24.5mm and employs quick connect terminals with 0.250-inch (6.3mm) pins for PCB or panel mounting.

Relay Automotive Feature Summary

• High switching capacity rated at 40A for robust load handling
• Compact physical dimensions suitable for space-constrained automotive environments
• Dual mounting options including PCB pin insertion and quick connect terminal compatibility

Relay Automotive Applications

• Automotive electrical systems
• General-purpose high-current switching
• Industrial control circuits

Relay Automotive Procurement Notes

Verify the specific contact configuration and coil voltage against project requirements before ordering. Confirm that the 6VDC coil specification matches the available supply voltage in the target application. Ensure the 40A current rating exceeds the maximum expected load current to prevent premature failure. Check for RoHS compliance documentation if environmental regulations apply to the end product.

Relay Automotive Selection Notes

Select this component when a compact, high-current automotive relay is required. The 6VDC coil specification limits suitability to low-voltage DC systems. Consider the 75VDC maximum switching voltage constraint for AC or higher voltage DC loads. The Silver Tin Oxide contact material offers durability for general switching duties but may require derating for highly inductive loads.

Relay Automotive Part Context

This model belongs to the A Series Relays from CIT Relay and Switch, designed for general-purpose and automotive applications. The series is characterized by high capacity and small size. The A21CSQ6VDC1.6D specifically denotes the 6VDC coil variant within the A21CSQ family, which typically supports up to 40A switching capacity.

Relay Automotive Replacement Considerations

Direct substitutes include other CIT A21CSQ series relays with identical 6VDC coils and 40A ratings, such as the A21CSQ12VDC1.6D if voltage tolerance allows. Cross-manufacturer replacements must match the 26x26x24.5mm form factor, 6.3mm pin spacing, and 40A/75VDC specifications.