1N4577A-1

Single Zener Diodes Overview

The Microchip Technology 1N4577A-1 is a temperature-compensated Zener reference diode with a nominal voltage of 6.4 V. It features a maximum voltage tolerance of ±2% and a low voltage temperature coefficient of 0.002 %/°C. The device operates at a test current of 2 mA, dissipates up to 500 mW, and maintains a maximum reverse leakage current of 2 µA at 3 V. It utilizes a DO-204AH (DO-35) axial leaded package and supports an internal metallurgical bond construction.

Single Zener Diodes Feature Summary

• Temperature compensated design for minimal voltage change across operating temperatures
• Internal metallurgical bond construction for enhanced reliability
• Low voltage temperature coefficient for precision reference applications

Single Zener Diodes Applications

• Precision voltage reference circuits
• Temperature compensated regulator designs
• High-reliability analog signal conditioning

Single Zener Diodes Procurement Notes

Verify the specific suffix configuration to ensure compatibility with required military or industrial standards. Confirm that the DO-204AH package dimensions align with the target PCB layout. Check RoHS compliance status as it varies by manufacturing site and date code. Ensure the selected variant matches the required voltage tolerance and temperature coefficient specifications for the application.

Single Zener Diodes Selection Notes

Select this component when a stable 6.4 V reference with tight temperature drift is required. The internal metallurgical bond makes it suitable for harsh environments where standard glass junctions may fail. Compare against other series members like 1N4577 or 1N4578 if different tolerance levels or packaging options are needed. Verify the operating current range matches the circuit bias requirements.

Single Zener Diodes Part Context

This part belongs to the 1N4565 through 1N4584A-1 series of Zero-TC Reference Diodes. These devices provide a selection of temperature coefficients ranging from 0.0005%/°C to higher values, all centered around the 6.4 V nominal voltage. The series is widely used in applications requiring high stability over wide temperature ranges.

Single Zener Diodes Replacement Considerations

Public confirmed substitutes include 1N4577-1 and 1N4578A-1. Verify electrical parameters such as voltage tolerance and temperature coefficient before substitution.