AZ947-1C-24D

Relay Automotive Overview

The AZ947-1C-24D is a subminiature PCB power relay designed for automotive applications, manufactured by American Zettler. It features a single pole double throw (SPDT) contact form, also known as Form C. The device operates with a 24V DC coil and utilizes through-hole mounting for secure PCB integration. Key electrical specifications include a maximum switching voltage of 250V AC or 50V DC, with a high contact current rating of 20A. The coil resistance is specified at 960 Ohms, drawing a coil current of 25 mA. Contact material consists of Silver Tin Oxide (AgSnO), supporting a coil power consumption of 600mW.

Relay Automotive Feature Summary

• Designed specifically for demanding automotive environments requiring reliable switching performance.
• High current carrying capacity of 20A per contact set for robust load handling.
• Subminiature physical footprint optimized for space-constrained printed circuit board layouts.

Relay Automotive Applications

• Automotive electronic control units
• Vehicle lighting circuits
• Power distribution modules in transportation systems

Relay Automotive Procurement Notes

Verify the specific suffix variant when ordering, as configurations such as AZ947-1C-24DE may exist with identical core parameters but distinct packaging or terminal styles. Confirm that the Silver Tin Oxide contact composition aligns with your application's arcing requirements. Ensure the 24V DC coil voltage matches your system's supply rails to prevent under-driving or overheating. Cross-reference the 960 Ohm coil resistance against your driver circuit capabilities to guarantee proper actuation timing and current draw within safe operating limits.

Relay Automotive Selection Notes

Select this component when a high-current SPDT switch is required in an automotive context. The 20A rating distinguishes it from standard signal relays, making it suitable for direct load control rather than just signaling. The 24V DC coil specification is standard for many vehicle architectures, simplifying integration into existing harnesses. Consider the through-hole termination style if surface-mount alternatives are insufficient for the mechanical stress or thermal dissipation needs of the target design.

Relay Automotive Part Context

This relay belongs to the AZ947 series, which focuses on subminiature power solutions for heavy-duty switching tasks. Unlike lower-current variants, this model prioritizes ampacity over miniaturization density, balancing size with the ability to handle significant electrical loads. The series is engineered to meet the durability standards expected in mobile machinery and automotive sectors, ensuring longevity under vibration and thermal cycling conditions typical of engine compartments or chassis electronics.

Relay Automotive Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with any potential replacements by matching the 24V DC coil voltage, 20A contact current, SPDT form factor, and 960 Ohm coil resistance. Ensure the replacement supports the same Silver Tin Oxide contact material and through-hole mounting configuration to maintain mechanical and electrical integrity in the existing assembly.