AZ9731-1A-12DC3E

Relay Automotive Overview

The AZ9731-1A-12DC3E is a Mini-ISO automotive power relay manufactured by American Zettler. It features a single-pole single-throw (SPST) normally open contact arrangement with a 40 Amp DC resistive load rating and a maximum switching voltage of 75 VDC. The coil operates on a nominal 12 VDC input, with a maximum rated voltage of 21 VDC and a typical operating voltage of 7.8 VDC. The component utilizes quick connect terminals for circuit integration and provides high momentary carry current capability. Dielectric strength between the coil and contacts is rated at 500 Vrms.

Relay Automotive Feature Summary

• Features quick connect terminals for simplified circuit integration
• Provides a 40 Amp contact rating suitable for high-current automotive loads
• Includes high momentary carry current capability to handle in-rush conditions

Relay Automotive Applications

• Automotive electrical systems
• High-current load switching applications
• Mini-ISO relay socket installations

Relay Automotive Procurement Notes

Verify that the specific suffix '3E' corresponds to the required coil suppression configuration, such as an integrated diode or resistor, as documented in the official datasheet. Confirm that the package dimensions and terminal type match the target PCB or socket design requirements before finalizing procurement.

Relay Automotive Selection Notes

Select this component when a 40 Amp SPST switching capacity is required within a compact Mini-ISO form factor. Ensure the control circuit can supply the necessary 12 VDC coil voltage. Consider the epoxy sealed version if environmental protection against moisture or contaminants is a critical design requirement.

Relay Automotive Part Context

This part belongs to the AZ9731 series of Mini-ISO automotive relays produced by American Zettler. The series is designed for high-reliability applications requiring robust switching capabilities in a small footprint. Variants within the family differ primarily in contact arrangement, coil voltage, and optional mounting brackets.

Relay Automotive Replacement Considerations

Compatible substitutes include other Mini-ISO format relays from manufacturers such as Picker Components, specifically models like the PC792B or PC792C, provided they meet the 40 Amp rating and pinout compatibility requirements.