1N5237B

Single Zener Diodes Overview

The SMC Diode Solutions 1N5237B is a silicon unidirectional voltage regulator diode housed in a DO-35 glass axial package. It provides an 8.2 V nominal Zener voltage with a 5% tolerance and a maximum power dissipation of 500 mW. The device operates within a temperature range of -65°C to +200°C, featuring a maximum reverse leakage current of 3 µA and a dynamic impedance of 8 Ohms at a test current of 20 mA.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation using a single silicon junction structure
• Utilizes a hermetically sealed glass axial leaded package for environmental protection
• Supports high-temperature soldering operations at terminal temperatures up to 250°C

Single Zener Diodes Applications

• Voltage reference circuits requiring stable DC levels
• Overvoltage protection stages in electronic systems
• Clamping applications for transient suppression

Single Zener Diodes Procurement Notes

Verify the manufacturer designation on the component marking or datasheet, as the 1N5237B specification is widely produced by multiple semiconductor vendors including onsemi, Vishay, and Micro Commercial Components. Confirm that the specific batch matches the required DO-35 package dimensions and RoHS compliance status before integration into production designs.

Single Zener Diodes Selection Notes

Select this component when a through-hole axial leaded form factor is required for 8.2 V regulation. Ensure the circuit design accommodates the 500 mW power rating and the specific dynamic impedance characteristics. Verify that the operating temperature range aligns with the system's thermal environment requirements.

Single Zener Diodes Part Context

This part belongs to the standard 1N52xx series of 500 mW Zener diodes. These components are commonly used in general-purpose electronics for biasing and regulation. The DO-35 package is a legacy standard still prevalent in industrial and consumer applications requiring robust axial mounting.

Single Zener Diodes Replacement Considerations

Direct substitutes include MMSZ5237B (SOD-123 surface mount), 1N5237B from onsemi, and BZM5237B from Panjit. Cross-package replacements require PCB layout modifications.