1N5261BUR-1

Single Zener Diodes Overview

The Microchip Technology 1N5261BUR-1 is a hermetically sealed, metallurgically bonded glass surface mount Zener diode in the DO-213AA package. It provides a nominal Zener voltage of 47 V with a 5% tolerance at a test current of 2.7 mA. The device dissipates up to 0.5 W and operates within a junction temperature range of -65°C to +175°C. Electrical characteristics include a maximum dynamic impedance of 105 Ohms at IZT and a reverse leakage current of 100 µA at VR.

Single Zener Diodes Feature Summary

• Hermetically sealed glass surface mount package with internal metallurgical bond
• Surface mount equivalent to JEDEC registered axial-leaded 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
• Satellite communications (satcom) terminals
• Aerospace and defense systems

Single Zener Diodes Procurement Notes

Verify that the specific part number matches the required tolerance suffix and RoHS compliance status. Confirm whether MIL-PRF-19500 screening is required for the intended application. Ensure the ordering suffix aligns with the desired lead plating and reliability level before procurement.

Single Zener Diodes Selection Notes

Select this component when a ruggedized surface mount solution is needed to replace traditional axial leads without changing board footprint significantly. Consider the positive temperature coefficient above 5V and the low capacitance profile for high-frequency stability. Verify thermal derating requirements against the FR4 PC board mounting conditions specified in the datasheet.

Single Zener Diodes Part Context

This device belongs to the 1N5221BUR-1 through 1N5281BUR-1 series, which offers a wide selection of voltages from 2.4 to 200 volts. The series serves as a direct surface mount alternative to the popular JEDEC registered 1N5221 to 1N5281 axial series, maintaining similar electrical performance in a compact glass MELF-style package.

Single Zener Diodes Replacement Considerations

Direct functional equivalents include other 1N5261 variants such as 1N5261B or 1N5261BUR-1(e3). Verify package compatibility and tolerance specifications when substituting.