1N5281

Single Zener Diodes Overview

The Microchip Technology 1N5281 is a Zener diode with a nominal voltage of 200V and a maximum power dissipation of 500mW. It utilizes a DO-35 axial leaded glass package and operates within a temperature range of -65°C to 175°C junction temperature. The component provides standard voltage tolerances, typically 5% or 10%, and features an isolated case connection. This device serves as a voltage regulator in electronic circuits requiring stable reference voltages at higher potential levels.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation at high potential levels using a metallurgically bonded glass construction
• Features an isolated case connection suitable for various mounting configurations
• Supports extended operating temperatures up to 175°C junction temperature

Single Zener Diodes Applications

• High-voltage reference circuits
• Overvoltage protection systems
• Voltage regulation in industrial electronics

Single Zener Diodes Procurement Notes

Verify the specific suffix letter on the part number to confirm the exact voltage tolerance required for the application, as the base designation covers a range of precision levels. Confirm compliance requirements such as RoHS status, noting that commercial versions may differ from military screening options. Ensure the DO-35 package dimensions align with the PCB layout constraints before finalizing procurement orders.

Single Zener Diodes Selection Notes

Select this component when a 200V Zener reference is needed in a through-hole axial package. Consider the thermal management capabilities given the 500mW power rating and the wide operating temperature range. Evaluate whether tighter voltage tolerances are necessary, which would require selecting a variant with a specific suffix code rather than the standard general-purpose version.

Single Zener Diodes Part Context

This component belongs to the widely recognized 1N5221 through 1N5281 series of 0.5-watt Zener voltage regulators. The series offers a broad selection of voltages ranging from 2.4V to 200V in a standard JEDEC registered DO-35 glass axial-leaded package. It is commonly used as a surface mount equivalent in other packages like DO-213AA for modern assembly techniques while maintaining similar electrical characteristics.

Single Zener Diodes Replacement Considerations

Equivalent parts include the 1N5281B for tighter tolerance specifications or the 1N5281BUR-1 for surface mount applications in a DO-213AA package. Verify pinout compatibility and thermal resistance values when substituting with components from different manufacturers.