1N5255B-T

Single Zener Diodes Overview

The Vishay 1N5255B-T is a silicon planar power Zener diode with a nominal voltage of 28 V and ±5% tolerance. It operates in the DO-35 (DO-204AH) axial package, dissipating up to 500 mW at 25 °C ambient temperature. The device features a maximum dynamic resistance of 44 Ω at a test current of 4.5 mA, with a reverse leakage current of 0.1 µA at 21 V. It supports junction temperatures up to 175 °C and storage ranges from -65 °C to +175 °C.

Single Zener Diodes Feature Summary

• Utilizes silicon planar technology for stable voltage regulation
• Features glass passivated junctions within a molded DO-35 body
• Provides low dynamic impedance for effective circuit stabilization

Single Zener Diodes Applications

• Voltage stabilization
• Reference voltage generation
• Overvoltage protection circuits

Single Zener Diodes Procurement Notes

Verify that the ordering code includes the specific suffix corresponding to the required tape-and-reel packaging format. Confirm the exact part number matches the manufacturer's official documentation to ensure compliance with specified electrical tolerances and thermal ratings before finalizing procurement.

Single Zener Diodes Selection Notes

Select this component when a precise 28 V reference is required in an axial through-hole configuration. Ensure the application environment remains within the specified thermal limits to maintain the rated 500 mW power dissipation capability without exceeding the maximum junction temperature threshold.

Single Zener Diodes Part Context

This component belongs to the 1N5221 to 1N5267 series of small signal Zener diodes manufactured by Vishay Semiconductors. The series covers a wide range of nominal voltages from 2.4 V to 75 V, providing standardized options for various voltage regulation and clamping applications across different industry sectors.

Single Zener Diodes Replacement Considerations

Equivalent parts include the 1N5255B-TP and 1N5255B-TAP. Verify mechanical dimensions and lead compatibility during substitution to ensure proper fit within existing printed circuit board layouts.