1N4573A-1

Single Zener Diodes Overview

The Microchip Technology 1N4573A-1 is a temperature-compensated Zener reference diode with a nominal voltage of 6.4 V and a tolerance of ±5%. It operates at a test current of 0.5 mA and dissipates up to 0.5 W. The device features a maximum reverse leakage current of 2 µA and a Zener impedance of 100 Ohms. It supports an operating temperature range from -65°C to +175°C and utilizes a DO-35 (DO-204AH) axial leaded glass package.

Single Zener Diodes Feature Summary

• Temperature compensated design for minimal voltage change across wide thermal ranges
• Internal metallurgical bond construction for enhanced reliability in harsh environments
• Hermetically sealed glass axial-leaded package suitable for military specifications

Single Zener Diodes Applications

• Precision voltage reference circuits requiring high stability
• Military and aerospace electronic systems
• Harsh environment instrumentation and control applications

Single Zener Diodes Procurement Notes

Verify the specific manufacturer source, as this component is produced by multiple entities including Microchip, Microsemi, MACOM, and Cobham under identical part numbers. Confirm that the procurement channel provides documentation matching the required military qualification level (JANTX). Ensure the package suffix indicates the internal metallurgical bond if environmental sealing is critical for the application.

Single Zener Diodes Selection Notes

Select this component when a stable 6.4 V reference is needed with low temperature drift. The 0.5 mA test current offers a balance between power consumption and regulation performance. Consider the ±5% initial tolerance against tighter requirements; if higher precision is necessary, evaluate variants within the same series offering lower tolerances such as ±1% or ±0.1% options.

Single Zener Diodes Part Context

This device belongs to the 1N4565 through 1N4584A-1 series of Zero-TC Reference Diodes. These components are designed to provide stable voltage references with temperature coefficients as low as 0.0005%/°C. The series includes various operating currents and voltages, all housed in the standard DO-35 glass package, making them widely used in legacy and ruggedized electronic designs.

Single Zener Diodes Replacement Considerations

Direct substitutes include other manufacturers' versions of JANTX1N4573A-1. For different tolerances, consider 1N4578A-1 (±1%) or 1N4568A-1 (±0.1%). For different test currents, evaluate 1N4571A-1 (1 mA) or 1N4579A-1 (2 mA). Verify package compatibility and qualification levels before substitution.