1N4496US/TR

Single Zener Diodes Overview

The Microchip Technology 1N4496US/TR is a surface mount Zener voltage regulator with a nominal breakdown voltage of 200 V. It operates within a junction and storage temperature range of -65 °C to +175 °C and features a steady-state power dissipation rating of 1.5 W at 25 °C ambient temperature. The device utilizes a hermetically sealed voidless glass package with tungsten slugs in an A (D-5A) MELF configuration, weighing 193 milligrams. Electrical characteristics include a maximum dynamic impedance of 1500 Ohms at the test current of 1.2 mA, a maximum reverse leakage current of 8000 µA, and a maximum continuous Zener current of 7.2 mA.

Single Zener Diodes Feature Summary

• Hermetically sealed voidless glass construction with internal metallurgical bonds for robust reliability.
• Military qualification available per MIL-PRF-19500/406 across JAN, JANTX, JANTXV, and JANS levels.
• Inherently radiation hard and non-sensitive to electrostatic discharge.
• Triple-layer passivation protects the semiconductor structure.

Single Zener Diodes Applications

• High-reliability applications where component failure cannot be tolerated.
• Voltage regulation over broad operating current and temperature ranges.
• Radiation-hardened electronic systems.

Single Zener Diodes Procurement Notes

Verify the specific reliability level required, as the base part number covers commercial through JANS qualifications. Confirm RoHS compliance status, noting that compliant versions are restricted to commercial grade only. Ensure the ordering suffix matches the desired tolerance and packaging format. Consult manufacturer documentation for tape and reel quantities and lead times.

Single Zener Diodes Selection Notes

Select this component for designs requiring high-voltage regulation in a compact surface mount form factor. The 1.5 W power rating supports significant current handling within the specified thermal limits. Consider the wide operating temperature range for extreme environment deployments. Verify that the 200 V breakdown voltage aligns with circuit requirements and that the package dimensions fit the PCB layout constraints.

Single Zener Diodes Part Context

This device belongs to the 1N4460US through 1N4496US series of industry-recognized 1.5 W Zener diodes. It serves as the surface mount equivalent of popular JEDEC registered axial-lead series. The series provides extensive voltage selections from 3.3 to 200 volts with standard 5% tolerance options.

Single Zener Diodes Replacement Considerations

Direct replacements include other manufacturers' equivalents in the D-5A or DO-204AE (MELF) packages with matching 200 V Zener voltage and 1.5 W power ratings. Verify pinout polarity and thermal resistance specifications before substitution.