1N5231

Single Zener Diodes Overview

The Microchip Technology 1N5231 is a single Zener diode with a nominal voltage of 5.1 V and a maximum power dissipation of 500 mW. It features a ±5% tolerance and operates within a temperature range of -65°C to +175°C. The device utilizes a DO-204AH (DO-35) through-hole package with two pins. Key electrical characteristics include a maximum Zener impedance of 17 Ω, a test current of 20 mA, and a maximum reverse leakage current of 5 µA at 2 V.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation for general-purpose applications
• Features a metallurgically bonded glass construction for durability
• Supports high-temperature operation up to 175°C junction temperature

Single Zener Diodes Applications

• Voltage reference circuits
• Overvoltage protection
• General-purpose voltage regulation

Single Zener Diodes Procurement Notes

Verify the specific suffix letter (e.g., B, C, D) in the full part number to confirm tolerance accuracy, as the base 1N5231 designation typically implies a standard 5% tolerance but variants exist. Confirm RoHS compliance status, as historical or specific military-grade versions may not meet current environmental standards. Ensure the required operating temperature range aligns with the component's specified limits before finalizing procurement.

Single Zener Diodes Selection Notes

Select this component when a reliable 5.1 V reference is needed in a through-hole configuration. The 500 mW power rating suits low-current applications. Consider the ±5% tolerance for standard precision needs. For surface-mount requirements, evaluate equivalent MELF packages like CDLL5231B. Verify that the 17 Ω impedance meets circuit sensitivity requirements.

Single Zener Diodes Part Context

The 1N5231 belongs to the widely recognized 1N52xx series of 500 mW Zener diodes. This series offers a broad range of voltage options from 2.4 V to 200 V. The 1N5231 specifically targets the 5.1 V segment, providing a common reference point in analog and digital logic circuits. Its DO-35 package ensures compatibility with traditional PCB layouts.

Single Zener Diodes Replacement Considerations

Equivalent parts include the onsemi 1N5231CTR and Fairchild 1N5231BT26A. Surface-mount alternatives include the CDLL5231B and Microsemi MQMLL5231C-1TR. Verify pinout compatibility and thermal performance when substituting.