1N6342

Overview

The Microchip Technology 1N6342 is a military-qualified Zener voltage regulator diode designed for high-reliability applications. It features a 56V nominal Zener voltage with a standard 5% tolerance and operates within a junction temperature range of -65°C to +175°C. The device utilizes a voidless hermetically sealed glass package with internal metallurgical bonds, ensuring robust construction. It supports steady-state power dissipation of 0.5W at a lead temperature of 75°C and offers flexible axial-lead mounting terminals.

Feature Summary

• Hermetically sealed voidless hard glass package with tungsten slugs
• Internal metallurgical bonds for enhanced reliability
• Qualified per MIL-PRF-19500/533 standards
• Non-sensitive to electrostatic discharge

Applications

• High-reliability aerospace systems
• Military defense electronics
• Critical space-grade equipment
• Radiation-hardened circuit designs

Procurement Notes

Verify the specific reliability level (JAN, JANTX, JANTXV, or JANS) required for your application, as these levels dictate qualification standards. Confirm RoHS compliance status if applicable, noting that commercial versions may differ from military grades. Ensure the ordering suffix matches the desired voltage tolerance and packaging format before finalizing procurement.

Selection Notes

Select the 1N6342 when a stable 56V reference is needed in harsh environments. Consider the tight thermal resistance characteristics and wide operating temperature range (-65°C to +175°C). Evaluate the need for hermetic sealing and radiation hardness against commercial alternatives. Verify that the 0.5W power rating meets the thermal dissipation requirements of the target circuit design.

Part Context

This component belongs to the 1N6309 through 1N6355D series of 500mW glass Zener diodes. The series provides extensive voltage selections from 2.4V to 200V. It is an industry-recognized product line offering both through-hole DO-35 packages and surface-mount options, catering to diverse mounting and reliability needs across industrial and defense sectors.

Replacement Considerations

Direct replacements include other parts within the 1N6309-1N6355D series from Microchip. Cross-brand equivalents must match the 56V Zener voltage, 0.5W power rating, and hermetic sealing requirements. Verify that any substitute maintains the same MIL-PRF-19500/533 qualification level and package dimensions for mechanical compatibility.