1N5255B-TR

Single Zener Diodes Overview

The Vishay General Semiconductor - Diodes Division 1N5255B-TR is a silicon planar power Zener diode housed in the DO-35 (DO-204AH) axial leaded package. It provides a nominal Zener voltage of 28 V with a standard tolerance of ±5%. The device operates at a test current of 4.5 mA and features a maximum dynamic resistance of 44 Ω. It supports a maximum power dissipation of 500 mW, with an operating temperature range from -65 °C to +175 °C.

Single Zener Diodes Feature Summary

• Utilizes silicon planar technology for robust voltage regulation
• Features a glass passivated junction within a DO-35 molded glass body
• Includes a color band on the cathode end for polarity identification

Single Zener Diodes Applications

• Voltage stabilization circuits
• General-purpose voltage reference applications

Single Zener Diodes Procurement Notes

Verify that the ordering code includes the '-TR' suffix to confirm taped-and-reeled packaging. Ensure the 'B' suffix is present to match the required ±5% Zener voltage tolerance. Confirm the component is sourced directly from authorized channels to guarantee authenticity and compliance with Vishay specifications.

Single Zener Diodes Selection Notes

Select this component when a 28 V regulated output is required in through-hole designs. The DO-35 package accommodates standard PCB mounting techniques. Verify that the circuit's thermal environment allows for the specified 500 mW power dissipation without exceeding the maximum junction temperature limits.

Single Zener Diodes Part Context

This part belongs to the 1N5221 to 1N5267 series of small signal Zener diodes manufactured by Vishay Semiconductors. The series covers a wide Zener voltage range from 2.4 V to 75 V. The 1N5255 variant specifically targets the 28 V segment of this extensive lineup.

Single Zener Diodes Replacement Considerations

Cross-reference with other manufacturers offering the 1N5255B designation in the DO-35 package. Verify that any substitute matches the 28 V nominal voltage, 500 mW power rating, and ±5% tolerance requirements.