1N4625D-1/TR

Overview

The Microchip Technology 1N4625D-1/TR is a hermetically sealed, single Zener diode designed for high-reliability applications. It features a nominal Zener voltage of 5.1 V with a tight tolerance of ±2%. The device operates in the DO-204AH (DO-35) axial through-hole package and dissipates up to 500 mW. It supports an extended operating temperature range from -65°C to +175°C and complies with MIL-PRF-19500/435 standards. Key electrical parameters include a maximum reverse leakage current of 5 µA at 3 V and a Zener impedance of 1500 Ohms.

Feature Summary

• Hermetically sealed glass construction ensuring environmental stability
• Tight voltage tolerance of ±2% for precision regulation
• Extended thermal capability supporting operation up to +175°C
• Military-grade qualification compliant with MIL-PRF-19500/435

Applications

• High-reliability aerospace power supply regulation
• Precision voltage reference circuits in defense systems
• Harsh environment protection and clamping applications
• Critical instrumentation requiring stable low-current biasing

Procurement Notes

Verify that the specific suffix '-TR' corresponds to tape-and-reel packaging if reel handling is required, as standard JAN variants often ship in bulk. Confirm that the MIL-PRF-19500/435 certification is explicitly documented for this specific reel lot. Ensure the supplier provides full traceability documentation consistent with military procurement requirements.

Selection Notes

Select this component when a 5.1 V reference requires tighter than standard ±5% tolerance. The DO-35 package suits designs needing axial leads for through-hole mounting. Consider the 500 mW power rating against expected dissipation. Verify compatibility with the -65°C to +175°C temperature range for the target application environment.

Part Context

This part belongs to the 1N4625 series of low-power Zener diodes manufactured by Microchip Technology. It serves as a specialized variant of the commercial 1N4625, offering enhanced reliability through hermetic sealing and strict military compliance. The 'D' suffix typically denotes the ±2% voltage tolerance grade within the family.

Replacement Considerations

JAN1N4625D-1 is a direct equivalent without the reel suffix. JANTX1N4625D-1 offers similar specifications but may differ in specific test conditions or screening levels. Verify pinout and package dimensions match before substitution.