1N4962/TR

Single Zener Diodes Overview

The Microchip Technology 1N4962/TR is a military-qualified, voidless hermetically sealed 5-watt glass Zener diode. It provides a nominal voltage of 15V with a standard tolerance of ±5%. The device operates within a junction temperature range of -65°C to +175°C and features flexible axial-lead mounting terminals. Electrical characteristics include a maximum reverse leakage current of 5µA at 11.4V and a maximum continuous regulator current of 315mA.

Single Zener Diodes Feature Summary

• Hermetically sealed voidless hard glass package with tungsten slugs
• Internal Category I metallurgical bonds for robust construction
• Triple-layer passivation for enhanced reliability
• Inherently radiation hard

Single Zener Diodes Applications

• High-reliability aerospace systems
• Military defense electronics
• Critical power regulation circuits where failure cannot be tolerated

Single Zener Diodes Procurement Notes

Verify the specific revision level and manufacturing date code against project requirements. Confirm that the axial lead finish matches the specification (Tin/Lead or Silver) as previous inventory may differ. Ensure compliance with MIL-PRF-19500/356 standards is documented for procurement acceptance.

Single Zener Diodes Selection Notes

Select this component when high power dissipation up to 5 watts is required in a hermetically sealed form factor. Consider the 15V nominal rating and ±5% tolerance for precise voltage reference needs. Evaluate thermal derating curves for operation above 65°C lead temperature to ensure safe junction temperatures.

Single Zener Diodes Part Context

This part belongs to the 1N4954 through 1N4996 series of 5-watt Zener diodes manufactured by Microsemi (now Microchip Technology). These components are designed for demanding environments requiring long-term stability and resistance to environmental stressors, distinguishing them from commercial-grade equivalents.

Single Zener Diodes Replacement Considerations

Surface mount equivalents are available in square end-cap MELF configuration with the 'US' suffix (e.g., 1N4962US). Verify pinout compatibility and thermal management differences when transitioning between axial lead and surface mount packages.