1N5281/TR

Single Zener Diodes Overview

The Microchip Technology 1N5281/TR is a silicon unidirectional Zener diode designed for voltage regulation. It features a nominal Zener voltage of 200 V with a tolerance of ±5%. The device has a maximum power dissipation of 500 mW and operates within a temperature range of -65 °C to +175 °C. It utilizes the DO-204AH (DO-35) axial lead package.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals for through-hole applications
• Constructed from silicon material in a hermetically sealed glass package

Single Zener Diodes Applications

• Stable power rail generation
• DC-DC conversion circuits
• Battery-powered equipment protection

Single Zener Diodes Procurement Notes

Verify the specific suffix /TR indicates tape and reel packaging when ordering. Confirm the manufacturer source, as this part number appears under both Microchip Technology and Microsemi designations. Ensure the required tolerance and power rating align with the circuit design specifications before procurement.

Single Zener Diodes Selection Notes

Select this component for applications requiring a precise 200 V reference point. The high maximum junction temperature of 175 °C allows for operation in demanding thermal environments. The DO-35 package offers a compact solution for standard through-hole PCB layouts where space is limited but robustness is required.

Single Zener Diodes Part Context

This component belongs to the 1N5281 series of Zener diodes, which covers a wide voltage range from 2.4 V to 200 V. The 1N5281 variant specifically targets the upper end of this spectrum, providing a fixed 200 V regulation point. It is a standard industry designation widely used in general-purpose electronic circuits.

Single Zener Diodes Replacement Considerations

Equivalent parts include MX1N5281B-1E3TR and MV1N5281A. Verify pinout compatibility and ensure the replacement meets the 500 mW power dissipation requirement. Check if hermetic sealing is mandatory for the specific application environment.