1N4574A-1

Single Zener Diodes Overview

The Microchip Technology 1N4574A-1 is a 6.4 V temperature compensated Zener reference diode housed in a DO-7 (DO-204AA) glass axial-leaded package. It operates at a test current of 1.0 mA with a maximum reverse current of 2 µA at 3 V and a dynamic impedance of 100 Ohms. The device features a voltage temperature coefficient of 0.0005 %/°C, ensuring minimal voltage change over temperature. It supports an operating temperature range from -65°C to +175°C and dissipates up to 500 mW DC power.

Single Zener Diodes Feature Summary

• Provides nominal 6.4 V reference voltage with tight tolerance options
• Features internal metallurgical bonding for enhanced stability
• Offers extremely low temperature coefficient for precision applications

Single Zener Diodes Applications

• Instrumentation requiring stable voltage references
• Circuit designs demanding minimal voltage change over broad temperature ranges
• Military qualification applications under MIL-PRF-19500/452

Single Zener Diodes Procurement Notes

Verify the specific suffix requirements for military qualifications such as JAN, JANTX, or JANTXV when ordering. Confirm that the DO-7 package dimensions align with the target PCB layout. Ensure the operating test current matches the specified 1.0 mA for optimal voltage-temperature stability during circuit design.

Single Zener Diodes Selection Notes

Select this component when a 6.4 V reference with high thermal stability is required. The 1N4574A-1 variant specifically targets ultra-low temperature coefficients compared to other series members. Consider the DO-7 package size and through-hole mounting style for compatibility with existing assembly processes.

Single Zener Diodes Part Context

This part belongs to the 1N4565 thru 1N4584A-1 series of Zero-TC Reference Diodes manufactured by Microsemi/Microchip Technology. The series provides various operating currents and temperature coefficients centered around the 6.4 V nominal voltage point. These devices are designed for high-reliability environments including aerospace and defense sectors.

Single Zener Diodes Replacement Considerations

Equivalent parts within the same series include 1N4573A-1 and 1N4575A-1, which share similar packaging but differ in operating current and temperature coefficient specifications. Verify electrical characteristics match before substitution.