1N4487US

Single Zener Diodes Overview

The Microchip Technology 1N4487US is a surface mount Zener voltage regulator with a nominal breakdown voltage of 82.0 V and a maximum power dissipation of 1.5 W at 25°C ambient temperature. It operates within a junction and storage temperature range of -65°C to +175°C. The device features a maximum dynamic impedance of 160 Ohms at the test current of 3.0 mA, with a maximum reverse leakage current of 0.25 µA at 65.6 V. It utilizes a hermetically sealed voidless glass MELF (D-5A) package.

Single Zener Diodes Feature Summary

• Hermetically sealed voidless glass construction with internal metallurgical bonds for high reliability
• Military qualification per MIL-PRF-19500/406 across JAN, JANTX, JANTXV, and JANS levels
• Inherently radiation hard design suitable for harsh environments
• Non-sensitive to electrostatic discharge as verified by MIL-STD-750 method 1020

Single Zener Diodes Applications

• High-reliability voltage regulation in aerospace systems
• Circuit protection in military-grade electronic equipment
• Voltage reference applications requiring wide temperature stability

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 standards under MIL-PRF-19500/406. Confirm RoHS compliance status if applicable, noting that commercial versions may differ from military qualified parts. Ensure ordering documentation explicitly references the correct part number including any tolerance suffixes.

Single Zener Diodes Selection Notes

Select this component when a robust, surface-mount Zener diode is needed for critical voltage regulation. The 1.5 W power rating and extended temperature range support demanding thermal conditions. Consider the 160 Ohm dynamic impedance for circuit stability requirements. Verify that the D-5A MELF package dimensions fit the available PCB space and soldering capabilities.

Single Zener Diodes Part Context

This device belongs to the 1N4460US through 1N4496US series of 1.5 Watt glass Zener diodes. These components are designed as surface mount equivalents to traditional axial-lead JEDEC registered series, offering similar electrical performance in a compact form factor. The series covers a broad voltage range from 3.3 V to 200 V with standard 5% tolerance options.

Single Zener Diodes Replacement Considerations

Direct replacements must match the 82.0 V nominal voltage, 1.5 W power rating, and D-5A MELF package. Equivalent parts should offer comparable dynamic impedance and reverse leakage characteristics. Military specifications require verifying that substitute components meet or exceed MIL-PRF-19500/406 qualifications.