1N5251BUR/TR

Single Zener Diodes Overview

The Microchip Technology 1N5251BUR/TR is a single Zener diode rated at 22 V with a 500 mW power dissipation capability. It utilizes the DO-213AA-2 (SOD-80) surface mount package and operates within a temperature range of -65 °C to +175 °C. The device features a nominal voltage tolerance of ±5%, a maximum reverse leakage current of 100 nA, and a Zener impedance of 29 Ohms. Testing is conducted at a current of 11.4 mA, with a forward voltage of 1.5 V at 200 mA.

Single Zener Diodes Feature Summary

• Provides a surface mount equivalent to the JEDEC registered 1N5251 series in a hermetically sealed metallurgically bonded configuration.
• Offers standard 5% voltage tolerance for precise regulation applications.
• Supports extended operating temperatures up to +175 °C for demanding environments.

Single Zener Diodes Applications

• Voltage reference circuits requiring surface mount integration
• Overvoltage protection in compact electronic assemblies
• General purpose voltage regulation in industrial equipment

Single Zener Diodes Procurement Notes

Verify the specific suffix against official documentation to confirm tape and reel packaging specifications. Confirm RoHS compliance status as historical data indicates variations within the 1N5251 family. Ensure the ordering part number matches the required tolerance and package type before procurement.

Single Zener Diodes Selection Notes

Select this component when a ruggedized surface mount Zener diode is required for high-reliability applications. The DO-213AA-2 package offers a footprint compatible with standard SMD processes while maintaining the performance characteristics of the axial 1N5251 series. Consider the 29 Ohm impedance for circuit stability requirements.

Single Zener Diodes Part Context

This component belongs to the 1N5221BUR-1 through 1N5281BUR-1 series of 0.5 W Zener voltage regulators. These devices serve as direct surface mount replacements for popular through-hole JEDEC registered parts, providing hermetic sealing and internal metallurgical bonding for enhanced durability.

Single Zener Diodes Replacement Considerations

Direct substitutes include other 1N5251 variants from Microchip Technology such as the 1N5251BMS. Verify package compatibility and tolerance levels when cross-referencing with generic equivalents.