1N6335

Overview

The Microchip Technology 1N6335US is a voidless hermetically sealed glass Zener diode rated at 0.5 W, qualified per MIL-PRF-19500/533. It features a nominal Zener voltage of 30 V with a standard tolerance of ±5%. The device operates within a junction and storage temperature range of -65 °C to +175 °C. Electrical characteristics include a maximum dynamic impedance of 32 Ω at the test current IZT of 500 µA, a reverse leakage current of 10 µA at 25 °C, and a forward voltage of 1.4 V at 1.0 A.

Feature Summary

• Hermetically sealed voidless hard glass package with tungsten slugs for robust construction
• Internal metallurgical bonds ensuring high reliability in critical applications
• Inherently radiation hard design suitable for space environments
• Non-sensitive to electrostatic discharge (ESD) per MIL-STD-750 method 1020

Applications

• Space electronics requiring failure-intolerant components
• Military aircraft systems demanding high-reliability voltage regulation
• Shipboard markets utilizing ruggedized semiconductor devices
• Commercial and military vehicle electronic circuits

Procurement Notes

Verify the specific suffix against the datasheet nomenclature to confirm the exact reliability level (JAN, JANTX, JANTXV, or JANS) and RoHS compliance status. Commercial versions may differ in lead finish and environmental compliance compared to military-qualified levels. Confirm availability as this component series has been subject to discontinuation notices by distributors.

Selection Notes

Select the 1N6335US when a precise 30 V reference is required in harsh thermal environments up to 175 °C. Ensure the application can accommodate the specified dynamic impedance and surge current limits. Verify that the surface-mount B-SQ MELF package aligns with the PCB layout requirements for the intended mounting style.

Part Context

This component belongs to the JEDEC registered 1N6309 through 1N6355 series of 0.5 W Zener voltage regulators. The series provides extensive voltage selections from 2.4 V to 200 V with various tolerance options. The 1N6335US specifically serves as the surface-mount equivalent for the axial-lead 1N6335, maintaining identical electrical performance in a compact form factor.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.