1N6337US

Overview

The Microchip Technology 1N6337US is a surface-mount Zener voltage regulator with a nominal breakdown voltage of 36.0 V and a maximum steady-state power dissipation of 0.5 W. It utilizes a voidless hermetically sealed glass B-SQ MELF package with internal metallurgical bonds. The device operates within a junction temperature range of -65 °C to +175 °C, features a dynamic impedance of 50 ohms at the test current IZ2, and maintains a reverse leakage current of 10 µA at 25 °C.

Feature Summary

• Hermetically sealed construction using voidless hard glass and tungsten slugs for robust environmental protection.
• Internal metallurgical bonding ensures high reliability suitable for applications where failure cannot be tolerated.
• Military qualification per MIL-PRF-19500/533 provides enhanced durability in extreme operating conditions.

Applications

• High-reliability military and aerospace electronic systems
• Voltage regulation circuits requiring broad operating current stability
• Radiation-hardened electronic designs

Procurement Notes

Verify that the specific part number matches the required military qualification level (JAN, JANTX, JANTXV, or JANS) as commercial versions may differ in compliance. Confirm RoHS status if restricted substances are prohibited, noting that compliant finishes are available on commercial grades only. Ensure the ordering suffix aligns with the desired voltage tolerance and packaging configuration.

Selection Notes

Select this component when a surface-mount equivalent to the axial-leaded 1N6337 is required without sacrificing hermetic sealing. Consider the B-SQ MELF package dimensions for PCB layout constraints. Evaluate the thermal resistance characteristics against the expected ambient temperature to ensure the 0.5 W power rating remains within safe operating limits.

Part Context

This device belongs to the 1N6309US through 1N6355DUS series of industry-recognized 0.5 watt Zener voltage regulators. The series offers extensive voltage selections from 2.4 to 200 volts with standard and tight tolerances. It serves as the surface-mount counterpart to the traditional axial-leaded JEDEC registered diodes while maintaining identical electrical performance profiles.

Replacement Considerations

Direct replacements include other manufacturers' surface-mount Zener diodes rated for 36 V and 0.5 W in a MELF package. Verify that substitute components meet the same hermetic sealing requirements and MIL-PRF-19500/533 qualification levels if used in military-grade applications.