1N6353

Overview

The Microchip Technology 1N6353 is a military-qualified Zener voltage regulator diode designed for high-reliability applications. It features a voidless hermetically sealed glass package with internal metallurgical bonds. The device provides a nominal Zener voltage of 160 V at a test current of 0.8 mA, with a maximum dynamic impedance of 1200 ohms and a maximum reverse leakage current of 122 µA at 25°C. It supports a steady-state power dissipation of 0.5 W and operates within a junction temperature range of -65°C to +175°C.

Feature Summary

• Hermetically sealed voidless hard glass construction with tungsten slugs
• Internal Category I 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 protection

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, noting that compliant versions are available only in commercial grades. Ensure ordering suffixes match the desired tolerance and packaging configuration before finalizing procurement.

Selection Notes

Select this component when a robust, radiation-hardened Zener diode is needed for critical voltage regulation. The 1N6353 offers a 160 V breakdown suitable for high-voltage reference circuits. Consider the thermal resistance characteristics and derating curves for proper heat management in enclosed environments.

Part Context

This part belongs to the 1N6309 through 1N6355D series of 0.5-watt Zener voltage regulators. The series covers a wide voltage range from 2.4 V to 200 V. The 1N6353 specifically addresses the higher voltage end of this spectrum, providing stable regulation in demanding operational conditions where standard commercial components may fail.

Replacement Considerations

Direct replacements must maintain the 160 V Zener voltage and 0.5 W power rating. Verify that substitute parts meet the same MIL-PRF-19500/533 qualification requirements if military-grade reliability is mandatory. Surface-mount equivalents like the 1N6353US exist but require different mounting considerations.