1N4581A-1

Single Zener Diodes Overview

The Microchip Technology 1N4581A-1 is a temperature-compensated Zener diode housed in a DO-204AH (DO-35) axial through-hole package. It provides a nominal reference voltage of 6.4 V with a tolerance of ±5%. The device dissipates up to 500 mW and operates within a junction temperature range of -65°C to +175°C. Key electrical characteristics include a maximum reverse leakage current of 2 µA at 3 V and a Zener impedance of 25 Ohms.

Single Zener Diodes Feature Summary

• Temperature compensated design for stable voltage reference across wide thermal ranges
• High reliability construction suitable for demanding environments
• Single unidirectional configuration in standard axial leaded package

Single Zener Diodes Applications

• Precision voltage reference circuits requiring thermal stability
• Space level and high-reliability screening applications
• Military and aerospace electronic systems

Single Zener Diodes Procurement Notes

Verify the specific suffix designation against official manufacturer documentation to confirm exact tolerance and testing levels. Confirm RoHS compliance status as indicated in datasheets, noting that some variants may not meet current environmental standards. Validate package dimensions and pinout compatibility during integration planning.

Single Zener Diodes Selection Notes

Select this component when a stable 6.4 V reference is required under extreme thermal conditions. Ensure the application supports the specified 500 mW power dissipation limit. Verify that the ±5% voltage tolerance aligns with circuit requirements before finalizing the design.

Single Zener Diodes Part Context

This part belongs to the 1N4565–1N4584 series of temperature-compensated Zener diodes manufactured by Microchip Technology. These components are engineered for high-stability applications where voltage drift due to temperature changes must be minimized. The series utilizes silicon technology encapsulated in glass or ceramic packages depending on the specific variant.

Single Zener Diodes Replacement Considerations

Direct substitutes listed include 1N4573A-1 and 1N4579A-1 from Microchip Technology. Verify electrical equivalence and package compatibility before substitution.