1N4475US/TR

Single Zener Diodes Overview

The Microchip Technology 1N4475US/TR is a surface mount Zener voltage regulator with a nominal breakdown voltage of 27 V and a maximum power dissipation of 1.5 W. It features a standard tolerance of ±5% and a dynamic impedance of 18 Ohms at the test current of 9.5 mA. The device operates within a junction temperature range of -65°C to +175°C, has a maximum reverse leakage current of 50 nA at 21.6 V, and utilizes an A-body (D-5A) SQ-MELF package.

Single Zener Diodes Feature Summary

• Hermetically sealed void-less glass construction with internal metallurgical bonds for robust performance.
• Military qualification per MIL-PRF-19500/406 ensuring high reliability in critical applications.
• Inherently radiation hard design suitable for harsh environments.

Single Zener Diodes Applications

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

Single Zener Diodes Procurement Notes

Verify that the specific ordering suffix matches the required military qualification level and RoHS compliance status. Confirm the tape and reel packaging configuration aligns with manufacturing requirements. Ensure the requested part number corresponds to the standard 5% tolerance unless a tighter tolerance suffix is explicitly specified.

Single Zener Diodes Selection Notes

Select this component for applications requiring a 27 V reference or regulation point in a surface mount form factor. Consider the 1.5 W power rating and wide thermal operating range when designing heat dissipation strategies. Verify compatibility with the D-5A MELF footprint during PCB layout.

Single Zener Diodes Part Context

This device belongs to the 1N4460US through 1N4496US series of industry-recognized 1.5 watt Zener voltage regulators. These components are designed as surface mount equivalents to popular JEDEC registered axial-lead series, offering hermetic sealing and void-less glass construction for superior durability.

Single Zener Diodes Replacement Considerations

JAN1N4475US

Single Zener Diodes FAQ

What is the maximum continuous forward current rating?

The datasheet specifies a maximum forward voltage of 1.5 V at a forward current of 1.0 A.

How is polarity indicated on the package?

Polarity is indicated by a band on the package, which marks the cathode end.