1N5228B/TR

Single Zener Diodes Overview

The Microchip Technology 1N5228B/TR is a 0.5 W glass axial-lead Zener diode in the DO-35 package, featuring a nominal voltage of 3.9 V with ±5% tolerance (B suffix). It operates within a temperature range of -65°C to +175°C and includes a TR suffix for tape-and-reel packaging per EIA-296 standards.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features minimal capacitance characteristics suitable for high-frequency applications
• Inherently radiation hard according to MicroNote 050 specifications

Single Zener Diodes Applications

• Voltage reference circuits requiring stable DC levels
• Overvoltage protection stages in sensitive electronic systems
• Clamping applications in signal processing paths

Single Zener Diodes Procurement Notes

Verify that the part number explicitly includes the 'TR' suffix to confirm tape-and-reel packaging compliance with EIA-296 standards. Ensure the B suffix is present to guarantee the required ±5% voltage tolerance. Confirm RoHS compliance status if environmental restrictions apply to your assembly process.

Single Zener Diodes Selection Notes

Select this component when a standard 3.9 V reference is needed in an axial-lead form factor. The 500 mW power rating supports moderate current loads. Consider the low capacitance profile if the application involves high-speed signal integrity requirements or precise timing references.

Single Zener Diodes Part Context

This device belongs to the widely used 1N5221 through 1N5281B series of 0.5 W Zener regulators. The series offers extensive voltage selection from 2.4 V to 200 V in the DO-35 package. The 1N5228B specifically targets the lower voltage end of the breakdown spectrum.

Single Zener Diodes Replacement Considerations

Equivalent parts include Vishay 1N5228B-TR and other manufacturers' 1N5228B variants. Verify pinout compatibility and thermal resistance values before substitution.