1N5281BUR-1/TR

Single Zener Diodes Overview

The Microchip Technology 1N5281BUR-1/TR is a surface mount Zener voltage regulator with a nominal breakdown voltage of 200 V. It operates within a metallurgically bonded glass DO-213AA (MELF) package and dissipates up to 0.5 W. The device features a 5% voltage tolerance, a maximum reverse leakage current of 7 µA at 160 V, and a dynamic impedance of 144 Ohms at the test current of 0.65 mA. It supports an operating junction temperature range from -65°C to +175°C.

Single Zener Diodes Feature Summary

• Hermetically sealed surface mount package with internal metallurgical bond
• Surface mount equivalent of JEDEC registered 1N5221 thru 1N5281 series
• Inherently radiation hard per Microsemi documentation
• Non-sensitive to electrostatic discharge

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• High-reliability electronic circuits requiring hermetic sealing
• Radiation-hardened system designs

Single Zener Diodes Procurement Notes

Verify that the specific ordering suffix matches the required tolerance level and RoHS compliance status. Confirm the tape and reel packaging configuration aligns with automated assembly requirements. Ensure the component meets the necessary environmental screening standards if applicable to the target application.

Single Zener Diodes Selection Notes

Select this component for applications requiring high-voltage regulation in a compact surface mount form factor. Consider the thermal resistance characteristics when designing heat dissipation strategies. Evaluate the dynamic impedance and leakage current specifications against circuit sensitivity requirements.

Single Zener Diodes Part Context

This part belongs to the 1N5221BUR-1 through 1N5281BUR-1 series of 0.5 watt Zener voltage regulators. The series provides a surface mount alternative to traditional axial-leaded equivalents, offering a wide selection of voltages from 2.4 to 200 volts in a metallurgically bonded glass package.

Single Zener Diodes Replacement Considerations

The 1N5281B-1 serves as the axial-leaded equivalent for this device family.