1N6352US

Overview

The Microchip Technology 1N6352US 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, conforming to MIL-PRF-19500/533 standards. The device provides a nominal Zener voltage of 150 V with a standard tolerance of ±5%. It operates within a junction temperature range of -65°C to +175°C and dissipates up to 0.5 W at an end cap temperature of 150°C.

Feature Summary

• Hermetically sealed voidless hard glass construction with tungsten slugs
• Internal Category I metallurgical bonds for enhanced reliability
• Radiation hard design suitable for harsh environments
• Non-sensitive to electrostatic discharge (ESD)

Applications

• High-reliability aerospace systems
• Military electronic circuits
• Voltage regulation in extreme temperature environments

Procurement Notes

Verify the specific reliability level required, as this series is available in JAN, JANTX, JANTXV, and JANS grades per MIL-PRF-19500/533. Confirm RoHS compliance status, as commercial versions may differ from qualified levels. Ensure the ordering suffix matches the desired voltage tolerance and packaging configuration before finalizing procurement.

Selection Notes

Select the 1N6352US when a precise 150 V reference is needed in surface mount or axial configurations. Consider the thermal resistance characteristics, specifically the junction-to-end cap resistance of 21 °C/W for this part number, during power dissipation calculations. Verify that the operating current remains within the specified maximum regulator current limits to maintain stable voltage regulation.

Part Context

This component belongs to the 1N6309US through 1N6355DUS series of Zener diodes. The series offers a wide voltage selection from 2.4 V to 200 V with various tolerance options. It serves as the surface mount MELF equivalent to the JEDEC registered 1N6309 through 1N6355 axial-leaded series, providing robust performance in compact packages.

Replacement Considerations

Direct replacements include other parts within the 1N6309US–1N6355US series from Microchip/Microsemi. Equivalent axial-leaded components are the standard 1N6352 diodes. Cross-brand substitutes must match the 150 V Zener voltage, 0.5 W power rating, and MIL-PRF-19500/533 qualification if military reliability is required.