1N4581-1

Single Zener Diodes Overview

The Microchip Technology 1N4581-1 is a temperature-compensated Zener reference diode with a nominal voltage of 6.4 V and a tight tolerance of +/- 0.5%. It operates at a test current of 4 mA and dissipates up to 500 mW. The component utilizes an internal metallurgical bond, indicated by the -1 suffix, housed in a DO-35 (DO-204AH) axial through-hole package. It supports a wide operating temperature range from -65°C to +175°C.

Single Zener Diodes Feature Summary

• Temperature compensated design for minimal voltage change across varying thermal conditions
• Internal metallurgical bond construction for enhanced mechanical stability
• High precision voltage regulation with tight tolerance specification

Single Zener Diodes Applications

• Precision voltage reference circuits
• Temperature compensated regulator designs
• Military and aerospace electronic systems

Single Zener Diodes Procurement Notes

Verify the specific suffix requirements for your application, as the -1 designation indicates a distinct internal metallurgical bond construction compared to standard variants. Confirm that the manufacturer accepts orders in multiples of 106 units. Ensure compatibility with existing board layouts for the DO-35 axial leaded package before finalizing procurement decisions.

Single Zener Diodes Selection Notes

Select this component when high stability over extreme temperatures is required, specifically within the -65°C to +175°C range. The 6.4 V nominal voltage makes it suitable for applications needing a stable reference point. Consider the 500 mW power dissipation limit and the 4 mA test current requirement when designing the surrounding circuitry to ensure proper operation and longevity.

Single Zener Diodes Part Context

This part belongs to the 1N4565 through 1N4584A series of Zero-Temperature Coefficient Reference Diodes. These components are designed to provide a stable voltage reference with very low drift. The series includes various voltages centered around the 6.4 V band, which is known for its near-zero temperature coefficient characteristics in silicon Zener diodes.

Single Zener Diodes Replacement Considerations

Direct substitutes include other parts from the 1N4565-1N4584A series with matching voltage and tolerance specifications. Verify if the internal metallurgical bond (-1 suffix) is strictly required; if not, standard versions without the suffix may be compatible.