1N5253BUR-1

Single Zener Diodes Overview

The Microchip Technology 1N5253BUR-1 is a surface mount Zener voltage regulator with a nominal breakdown voltage of 25 V. It operates within a junction temperature range of -65°C to +175°C and dissipates up to 0.5 W. The device features a metallurgically bonded glass DO-213AA package, offering hermetic sealing. Electrical characteristics include a maximum reverse leakage current of 100 nA at the specified voltage, a dynamic impedance of 35 Ohms at the test current, and a positive temperature coefficient of 0.089 %/°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
• Non-sensitive to electrostatic discharge per MIL-STD-750 method 1020
• Inherently radiation hard

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• Applications requiring minimal capacitance
• Radiation-hardened circuit designs

Single Zener Diodes Procurement Notes

Verify the specific suffix letters on the part number to confirm voltage tolerance and RoHS compliance status. Ensure the ordering suffix matches the required reliability level, as commercial versions differ from screened options. Confirm package dimensions against the DO-213AA specification before integration into the PCB layout.

Single Zener Diodes Selection Notes

Select this component for applications requiring a robust surface mount Zener diode with high thermal stability. The metallurgical bond provides durability compared to standard glass seals. Consider the positive temperature coefficient when designing circuits sensitive to thermal drift in higher voltage ranges.

Single Zener Diodes Part Context

This device belongs to the 1N5221BUR-1 through 1N5281BUR-1 series, which serves as the surface mount counterpart to the axial-leaded 1N5221B-1 through 1N5281B-1 series. The series covers a wide voltage range from 2.4 V to 200 V, providing designers with extensive selection options for various power supply and protection requirements.

Single Zener Diodes Replacement Considerations

The 1N5253B-1 is an available axial-leaded alternative within the same product family.