1N4771/TR

Overview

The Microchip Technology 1N4771/TR is a single Zener diode with a nominal voltage of 9.1 V and a power dissipation rating of 500 mW. It features a 5% voltage tolerance and operates within a temperature range of -65°C to +175°C. The device utilizes a DO-204AA (DO-35) axial through-hole package. Key electrical parameters include a maximum reverse leakage current of 10 nA, a test current of 3.3 mA, and a Zener impedance of 70 ohms. The component is supplied in reel packaging.

Feature Summary

• Temperature compensated design for stable voltage regulation across wide thermal ranges
• Single configuration suitable for precision reference applications
• Through-hole axial mounting for robust mechanical integration

Applications

• Precision voltage reference circuits
• Temperature compensated regulator designs
• Overvoltage protection in sensitive electronics

Procurement Notes

Verify the specific suffix designation against official Microchip documentation to confirm manufacturing lot details and compliance status. Confirm that the reel packaging format aligns with automated assembly requirements. Cross-reference the part number with current datasheets to ensure no obsolescence notices or functional changes have been issued by the manufacturer prior to procurement.

Selection Notes

Select this component when a stable 9.1 V reference is required with tight temperature compensation characteristics. The 500 mW power rating and DO-35 package suit low-power through-hole designs. Ensure the operating environment stays within the specified -65°C to +175°C range to maintain performance specifications.

Part Context

This part belongs to the 1N47xx series of Zener diodes manufactured by Microchip Technology. The /TR suffix indicates tape and reel packaging for automated handling. It is distinct from non-compensated variants and higher/lower voltage counterparts within the same product family.

Replacement Considerations

Check for direct equivalents such as the 1N4771A if A-grade specifications are acceptable. Verify pinout compatibility and thermal management requirements before substituting with other manufacturers' 9.1 V Zener diodes.