1N5238B

Single Zener Diodes Overview

The Fairchild Semiconductor 1N5238B is a single Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 8.7 V with a tolerance of ±5%. The device is rated for a maximum power dissipation of 500 mW and operates within a temperature range of -65 °C to +200 °C junction temperature. Packaged in the DO-204AH (DO-35) axial leaded format, it provides stable regulation over a wide operating current and temperature range.

Single Zener Diodes Feature Summary

• Provides precise voltage regulation with standard 5% tolerance
• Capable of handling 500 mW power dissipation
• Suitable for high-temperature environments up to 200 °C

Single Zener Diodes Applications

• Voltage reference circuits
• Overvoltage protection
• Clamping applications

Single Zener Diodes Procurement Notes

Verify the manufacturer marking on the component body to confirm Fairchild Semiconductor origin. Ensure the package matches the DO-35 glass axial specification. Check datasheets for specific lot traceability or military screening requirements if applicable to the design. Confirm RoHS compliance status based on the specific manufacturing date code.

Single Zener Diodes Selection Notes

Select this component when a stable 8.7 V reference is required in a through-hole configuration. The DO-35 package offers robust mechanical stability for general-purpose PCB mounting. Consider the thermal resistance and ambient temperature conditions to ensure the 500 mW rating is not exceeded during continuous operation.

Single Zener Diodes Part Context

This part belongs to the widely used 1N52xx series of 500 mW Zener diodes. These components are industry-standard replacements for various voltage regulation needs. The 1N5238B specifically targets the 8.7 V segment of the market, offering reliability from established semiconductor manufacturers like Fairchild.

Single Zener Diodes Replacement Considerations

Equivalent parts include the Microsemi 1N5238B and Rectron 1N5238B. Verify pinout compatibility and electrical parameters such as impedance and leakage current before substitution.