1N5237B-TR

Single Zener Diodes Overview

The Vishay 1N5237B-TR is a silicon planar power Zener diode in the DO-35 (DO-204AH) axial package. It provides an 8.2 V nominal Zener voltage with a ±5% tolerance and a maximum reverse leakage current of 3 µA at 6.5 V. The device dissipates up to 500 mW, operates within a junction temperature range of -65 °C to +175 °C, and features a typical dynamic resistance of 8 Ω at a test current of 20 mA.

Single Zener Diodes Feature Summary

• Utilizes silicon planar technology for robust voltage regulation
• Provides standard ±5% Zener voltage tolerance
• Designed for high thermal stability and reliability

Single Zener Diodes Applications

• Voltage stabilization circuits

Single Zener Diodes Procurement Notes

Verify that the ordering code matches the required suffix for tape-and-reel packaging. Confirm compliance requirements against Vishay's material categorization documentation. Ensure lead length specifications align with thermal resistance calculations for the specific application environment.

Single Zener Diodes Selection Notes

Select this component when a standard 8.2 V reference is needed in a through-hole axial configuration. Consider the 500 mW power dissipation limit and the positive temperature coefficient characteristic inherent to this voltage level. Verify that the operating ambient temperature remains within the specified junction 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 voltage range from 2.4 V to 75 V. Alternative package options include MiniMELF, SOT-23, and SOD-123 form factors for different mounting requirements.

Single Zener Diodes Replacement Considerations

Direct substitutes include other manufacturers' 1N5237B equivalents in the DO-35 package. Cross-reference electrical parameters such as dynamic impedance and leakage current to ensure compatibility with existing circuit designs.

Single Zener Diodes FAQ

What is the typical dynamic resistance of the 1N5237B?

The typical dynamic resistance is 8 Ω at a test current of 20 mA.

Does the 1N5237B have a negative or positive temperature coefficient?

It has a positive temperature coefficient of 0.062 %/K.