1N4487

Single Zener Diodes Overview

The Microchip Technology 1N4487 is a military-qualified Zener voltage regulator diode designed for high-reliability applications. It features a hermetically sealed void-less glass package with an internal metallurgical bond, ensuring robust construction and radiation hardness. The device operates within a junction temperature range of -65°C to +175°C and provides a nominal Zener voltage of 82V at a test current of 3.0mA. It supports a steady-state power dissipation of 1.5W and includes triple-layer passivation for enhanced durability.

Single Zener Diodes Feature Summary

• Hermetically sealed void-less glass construction with internal metallurgical bonds
• Military qualification per MIL-PRF-19500/406 for JAN, JANTX, JANTXV, and JANS levels
• Inherently radiation hard design suitable for harsh environments
• Triple-layer passivation providing extremely robust physical protection

Single Zener Diodes Applications

• High-reliability aerospace systems where failure is not tolerated
• Radiation-hardened electronic circuits
• Voltage regulation in extreme temperature environments
• Critical defense and military equipment power supplies

Single Zener Diodes Procurement Notes

Verify the specific reliability level (JAN, JANTX, JANTXV, or JANS) required for your application, as this affects qualification standards. Confirm RoHS compliance status if applicable, noting that commercial versions may differ from military specifications. Ensure ordering suffixes match the desired tolerance and packaging format. Cross-reference datasheet revision T4-LDS-0183 Rev. 3 for accurate electrical characteristics and mechanical dimensions before finalizing procurement.

Single Zener Diodes Selection Notes

Select the 1N4487 when a precise 82V reference is needed in a ruggedized axial-lead package. Consider the 1.5W power rating and thermal impedance curves for heat dissipation requirements. Evaluate the dynamic impedance and leakage current specifications against circuit sensitivity. Choose appropriate tolerance suffixes if tighter voltage accuracy than standard 5% is required for the system design.

Single Zener Diodes Part Context

This component belongs to the industry-recognized 1N4460–1N4496 series of 1.5-watt Zener diodes. It shares the same DO-41 glass package and hermetic sealing technology as its siblings, offering a broad selection of voltages from 3.3V to 200V. The series is widely used in critical applications requiring long-term stability and resistance to environmental stressors.

Single Zener Diodes Replacement Considerations

Direct substitutes include other 1N4487 variants with different reliability suffixes (e.g., JAN, JANTX). Equivalent commercial-grade parts may lack hermetic sealing and radiation hardness. Verify pinout compatibility and ensure replacement devices meet the same MIL-PRF-19500/406 qualification levels if military specs are mandatory.