1N5251BUR

Single Zener Diodes Overview

The Microchip Technology 1N5251BUR is a single Zener diode rated at 22 V nominal voltage with ±5% tolerance. It operates in a DO-213AA surface-mount package and dissipates up to 500 mW. The device features a maximum reverse leakage current of 1 µA at 9.1 V and a maximum impedance of 30 Ohms. It functions within a junction temperature range of -65°C to 175°C, with a forward voltage of 1.1 V at 200 mA.

Single Zener Diodes Feature Summary

• Provides surface mount equivalent performance to the JEDEC registered 1N5221 through 1N5281 series
• Utilizes a hermetically sealed metallurgically bonded glass configuration for reliability
• Offers standard 5% voltage tolerance options within the series

Single Zener Diodes Applications

• Voltage regulation in surface mount circuit designs
• Replacement for axial lead equivalents in compact PCB layouts
• General purpose Zener reference applications requiring hermetic sealing

Single Zener Diodes Procurement Notes

Verify that the specific suffix BUR corresponds to the required DO-213AA surface mount package rather than the axial DO-35 variant. Confirm the exact voltage tolerance and leakage specifications against the manufacturer's datasheet for the 1N5221BUR-1 through 1N5281BUR-1 series before integration. Ensure compatibility with existing footprint designs.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed surface mount Zener diode is required as a direct replacement for traditional axial leads. The DO-213AA package allows for automated assembly while maintaining the electrical characteristics of the legacy 1N5251 series. Consider the 500 mW power dissipation limit and operating temperature range for thermal management.

Single Zener Diodes Part Context

This part belongs to the 1N5221BUR-1 through 1N5281BUR-1 series, which provides surface mount equivalents to popular JEDEC registered Zener voltage regulators. Manufactured by Microchip Technology, these devices are available in metallurgically bonded configurations. The series covers a wide voltage range from 2.4 to 200 volts with various tolerance options.

Single Zener Diodes Replacement Considerations

Direct parameter-equivalent substitutes include the 1N5251BUR-1. Verify package compatibility between DO-213AA variants and ensure voltage ratings match the original design requirements.