1N4464US/TR

Single Zener Diodes Overview

The Microchip Technology 1N4464US/TR is a surface mount Zener voltage regulator with a nominal breakdown voltage of 9.1 V and a test current of 28 mA. It features a maximum dynamic impedance of 4 Ohms at the test point and a maximum reverse leakage current of 500 µA. The device operates within a junction temperature range of -65 °C to +175 °C and dissipates up to 1.5 W of steady-state power. It utilizes a D-5A (MELF) package with a tungsten slug for thermal management.

Single Zener Diodes Feature Summary

• Hermetically sealed void-less glass construction with internal metallurgical bonds
• Military qualification per MIL-PRF-19500/406 for high-reliability environments
• Triple-layer passivation for enhanced robustness
• Inherently radiation hard design

Single Zener Diodes Applications

• High-reliability military systems requiring failure-tolerant voltage regulation
• Spacecraft electronics subject to radiation exposure
• Harsh environment industrial equipment operating across wide temperature ranges

Single Zener Diodes Procurement Notes

Verify that the specific ordering suffix matches the required reliability level, as the base part number covers multiple qualification grades. Confirm RoHS compliance status if environmental regulations apply, noting that compliant versions are typically commercial grade only. Ensure the tape and reel packaging aligns with automated assembly requirements.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed surface mount Zener diode is required for critical applications. The 1.5 W power rating supports substantial current handling in compact MELF packages. Verify that the 9.1 V nominal voltage and 4 Ohm impedance meet circuit stability requirements under specified load conditions.

Single Zener Diodes Part Context

This device belongs to the 1N4460US through 1N4496US series of 1.5 Watt glass Zener diodes. These components serve as surface mount equivalents to traditional axial-lead JEDEC registered series. The series offers extensive voltage selection from 3.3 to 200 Volts with standard 5% tolerance options.

Single Zener Diodes FAQ

What is the maximum continuous forward current rating?

The maximum continuous forward current is 200 mA.

How is polarity indicated on the package?

Polarity is indicated by a band marking the cathode end of the device.