1N5254B-TR

Single Zener Diodes Overview

The Vishay 1N5254B-TR is a silicon planar power Zener diode with a nominal voltage of 27 V and ±5% tolerance. It operates in the DO-35 (DO-204AH) axial through-hole package, dissipating up to 500 mW at thermal equilibrium. The device features a maximum dynamic resistance of 41 Ω and a reverse leakage current of 100 nA at 21 V. It withstands 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 high stability and sharp reverse characteristics
• Provides standard ±5% Zener voltage tolerance for reliable voltage stabilization
• Features low reverse current levels and robust thermal performance

Single Zener Diodes Applications

• Voltage stabilization circuits
• Reference voltage generation
• Overvoltage protection

Single Zener Diodes Procurement Notes

Verify that the ordering code matches the specific suffix required for your application. Confirm the package type and lead configuration align with your PCB layout requirements. Ensure compliance with RoHS directives if applicable to your manufacturing standards. Cross-reference the datasheet revision date to confirm the most recent electrical specifications are being utilized.

Single Zener Diodes Selection Notes

Select this component when a precise 27 V reference is needed within a small axial footprint. Consider the 500 mW power dissipation limit relative to ambient temperature derating curves. Evaluate the dynamic impedance and leakage current against circuit sensitivity requirements. Verify that the operating temperature range meets the environmental conditions of the target system.

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 voltage range from 2.4 V to 75 V. The 'B' suffix indicates the standard ±5% tolerance band. The '-TR' suffix designates the tape and reel packaging format for automated assembly processes.

Single Zener Diodes Replacement Considerations

Direct replacements include other manufacturers' 1N5254B equivalents or Vishay's own variants such as the 1N5254B-TAP for cut-tape packaging. Alternative packages like MiniMELF (TZM5254) or SOT-23 (MMBZ5254) offer space-saving options but require re-evaluation of thermal and mechanical constraints.