1N4487US/TR

Single Zener Diodes Overview

The Microchip Technology 1N4487US/TR is a surface mount Zener voltage regulator with an 82V nominal breakdown voltage. It operates within a -65°C to +175°C junction temperature range and dissipates up to 1.5W at 25°C ambient. The device features a hermetically sealed voidless glass package (D-5A MELF) and offers standard 5% tolerance, with tighter options available. Qualified per MIL-PRF-19500/406, it provides robust construction for high-reliability applications.

Single Zener Diodes Feature Summary

• Hermetically sealed voidless glass construction using internal metallurgical bonds
• Military qualification per MIL-PRF-19500/406 for high-reliability environments
• Inherently radiation hard design suitable for harsh conditions
• Triple-layer passivation for enhanced durability

Single Zener Diodes Applications

• Voltage regulation in aerospace systems
• High-reliability military electronics
• Radiation-hardened circuit protection
• Precision reference voltage generation

Single Zener Diodes Procurement Notes

Verify the specific reliability level suffix (JAN, JANTX, JANTXV, or JANS) required for your application, as these denote different qualification tiers under MIL-PRF-19500/406. Confirm RoHS compliance status if applicable, noting that commercial versions may differ from military grades. Ensure the tape and reel packaging meets EIA-481-B standards for your assembly line.

Single Zener Diodes Selection Notes

Select this component when a 1.5W surface mount Zener diode with 82V regulation is needed in extreme temperature environments. Consider the D-5A MELF package for space-constrained PCB layouts requiring hermetic sealing. Evaluate thermal impedance curves for transient surge handling if used in switching applications. Verify tolerance requirements against standard 5% or tighter 1%/2% variants.

Single Zener Diodes Part Context

This part belongs to the 1N4460US–1N4496US series of voidless hermetically sealed surface mount Zener diodes. These devices serve as surface mount equivalents to popular JEDEC registered axial-lead series. The series covers a wide voltage range from 3.3V to 200V, providing versatile options for various voltage regulation needs in ruggedized electronic designs.

Single Zener Diodes Replacement Considerations

Direct replacements must match the 82V Zener voltage, 1.5W power rating, and D-5A MELF package dimensions. Verify equivalent MIL-PRF-19500/406 qualification levels if military grade is required. Axial-lead equivalents like the 1N4487 exist but require mechanical adaptation.