1N4968

Single Zener Diodes Overview

The Microchip Technology 1N4968 is a military-qualified, voidless hermetically sealed 5-watt glass Zener diode. It provides a nominal voltage of 27V with standard 5% tolerance. Key electrical parameters include a maximum dynamic impedance of 6 ohms at the test current and a maximum reverse leakage current of 2 microamperes. The device operates within a temperature range of -65°C to +175°C and features flexible axial-lead mounting terminals for through-hole integration.

Single Zener Diodes Feature Summary

• Hermetically sealed voidless-glass construction with internal metallurgical bonds
• Military qualification compliant with MIL-PRF-19500/356 standards
• Triple-layer passivation for enhanced robustness
• Inherently radiation hard design

Single Zener Diodes Applications

• High-reliability aerospace systems
• Military electronic equipment
• Critical voltage regulation circuits where failure is not tolerated

Single Zener Diodes Procurement Notes

Verify that the specific part number matches the required military specification level (e.g., JAN, JANTX) as suffixes define reliability grades. Confirm RoHS compliance status if applicable to your project requirements. Ensure the ordering suffix aligns with the desired voltage tolerance and package configuration before procurement.

Single Zener Diodes Selection Notes

Select this component for applications requiring high power dissipation capabilities up to 5 watts in a ruggedized form factor. Consider the thermal resistance characteristics when designing heat dissipation strategies. Verify that the 27V breakdown voltage aligns with the circuit's reference requirements and that the axial lead format fits the PCB layout constraints.

Single Zener Diodes Part Context

This component belongs to the 1N4954 through 1N4996 series of 5-watt Zener regulators manufactured by Microsemi (now Microchip Technology). These devices are industry-standard replacements for legacy military-grade components, offering a broad selection of voltages from 3.3V to 390V in a durable glass package suitable for harsh environments.

Single Zener Diodes Replacement Considerations

Equivalent parts may include other manufacturers' MIL-PRF-19500/356 qualified 5W Zener diodes with identical 27V ratings. Verify mechanical dimensions and pinout compatibility before substitution.