1N4487/TR

Single Zener Diodes Overview

The Microchip Technology 1N4487/TR is a commercial-grade Zener voltage regulator diode within the 1.5-watt series, designed for high-reliability applications where failure is not an option. It features a void-less hermetically sealed glass package with internal metallurgical bonding and triple-layer passivation. The device provides an 82-volt nominal breakdown voltage with standard 5% tolerance. Qualified under MIL-PRF-19500/406 standards, it operates across a temperature range of -65°C to +175°C.

Single Zener Diodes Feature Summary

• Hermetically sealed void-less glass construction with tungsten slugs
• Triple-layer passivation for robust environmental protection
• Internal Category I metallurgical bonds ensuring structural integrity
• Non-sensitive to electrostatic discharge per MIL-STD-750 method 1020

Single Zener Diodes Applications

• Military and aerospace circuits requiring radiation hardness
• High-reliability voltage regulation systems
• Harsh environment power supply designs

Single Zener Diodes Procurement Notes

Verify that the specific ordering suffix matches the required reliability level and RoHS compliance status. Confirm the package type corresponds to the intended mounting style. Ensure the requested quantity aligns with factory tape and reel options. Check current availability as stock may be restricted. Validate all electrical parameters against the official datasheet before integration.

Single Zener Diodes Selection Notes

Select this component when a 1.5-watt Zener diode with 82V nominal voltage is required. Consider the wide operating temperature range for extreme environments. Evaluate the need for hermetic sealing versus commercial plastic packages. Assess if the specific tolerance levels meet circuit precision requirements. Verify lead configuration compatibility with the PCB layout.

Single Zener Diodes Part Context

This part belongs to the 1N4460–1N4496 series of industry-recognized Zener regulators. The series offers voltages from 3.3 to 200 volts in axial-lead DO-41 packages. It is available in various military qualification levels including JAN, JANTX, JANTXV, and JANS. Commercial versions are also produced for general-purpose use.

Single Zener Diodes Replacement Considerations

Cross-reference with other 1N4487 variants from different manufacturers only if they explicitly match the 1.5W power rating, 82V Zener voltage, and DO-41 package dimensions. Verify equivalent thermal resistance and maximum reverse current specifications.