A2K1ASQ12VDC1.6R

Relay Automotive Overview

The A2K1ASQ12VDC1.6R is a sealed SPST-NO automotive relay manufactured by CIT Relay and Switch, designed for high-current DC applications. It features a 12VDC coil with a rated power of 1.6W and an integrated 680-ohm resistor to suppress voltage spikes. The unit utilizes AgSnO2 contact material capable of switching up to 40A at 14VDC, with a maximum switching voltage of 75VDC and contact resistance under 30 milliohms. Dimensions are compact, supporting quick connect termination and base mounting.

Relay Automotive Feature Summary

• Sealed construction with metal bracket and shroud for environmental protection
• Integrated internal resistor for coil voltage spike suppression
• Quick connect termination compatible with standard ISO sockets
• High switching capacity suitable for heavy automotive loads

Relay Automotive Applications

• Automotive lamp control circuits
• DC motor switching applications
• Heavy accessory power distribution in vehicles
• Industrial equipment requiring robust relay isolation

Relay Automotive Procurement Notes

Verify the specific suffix 'R' indicates the inclusion of the internal flyback diode or resistor variant as documented in official CIT datasheets. Confirm that the required socket matches the quick-connect pin spacing and terminal configuration. Ensure the application voltage does not exceed the 75VDC maximum rating for the contacts. Check RoHS compliance status if restricted substances are mandated for the project. Validate thermal dissipation requirements given the 1.6W coil power consumption during operation.

Relay Automotive Selection Notes

Select this model when a sealed, high-current SPST relay is required for automotive environments. The integrated resistor simplifies circuit design by eliminating external snubber components. Compare against non-sealed variants if cost is critical, though sealing offers superior durability. Consider the 40A rating against peak load currents to ensure adequate margin. Verify compatibility with existing ISO-style relay bases in the assembly.

Relay Automotive Part Context

This component belongs to the CIT A2 series of automotive relays, which are standardized for size and performance in the automotive industry. The series includes various configurations such as SPDT and different coil voltages. The A2K1ASQ12VDC1.6R specifically denotes the SPST-NO form factor with a 12VDC coil and resistor integration. This series is widely used in OEM and aftermarket automotive electronics due to its reliability and compact footprint.

Relay Automotive Replacement Considerations

Direct substitutes include other CIT A2 series relays with identical pinout and electrical ratings, such as the A2S1ASQ12VDC1.6R if SPDT functionality is acceptable. Cross-reference with other manufacturers offering Mini ISO sized relays with 12VDC coils and 40A+ ratings. Ensure any replacement maintains the sealed construction and quick-connect termination style to fit existing harnesses and sockets without modification.