1N5261BUR-1/TR

Single Zener Diodes Overview

The Microchip Technology 1N5261BUR-1/TR is a surface mount Zener diode in the 1N5221BUR-1 series, housed in a hermetically sealed DO-213AA glass package. It provides a nominal Zener voltage of 47V with a 5% tolerance and a maximum power dissipation of 0.5W. The device features an internal metallurgical bond and operates within a junction temperature range of -65°C to +175°C. Electrical characteristics include a test current of 2.7mA, a maximum dynamic impedance of 105 Ohms at IZT, and a maximum reverse leakage current of 100µA at 43V.

Single Zener Diodes Feature Summary

• Hermetically sealed glass surface mount package with internal metallurgical bond
• Surface mount equivalent of JEDEC registered 1N5221 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
• Reference voltage sources in electronic circuits
• Protection against voltage transients

Single Zener Diodes Procurement Notes

Verify that the part number suffix TR indicates tape and reel packaging as specified in the datasheet. Confirm RoHS compliance status, noting that compliant versions are available for commercial grade only. Ensure screening requirements align with MIL-PRF-19500 if applicable to the specific order configuration.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed surface mount Zener regulator is required. The 47V nominal voltage and 5% tolerance suit applications needing stable reference levels. Consider the 0.5W power rating and thermal resistance values for proper heat dissipation design on FR4 PCBs.

Single Zener Diodes Part Context

This device belongs to the 1N5221BUR-1 through 1N5281BUR-1 series, offering surface mount equivalents to popular axial-leaded JEDEC types. The series covers voltages from 2.4V to 200V in a compact MELF-style package, providing a robust alternative to traditional through-hole components while maintaining high reliability standards.

Single Zener Diodes Replacement Considerations

Direct parameter-equivalent replacements include the non-reel version 1N5261BUR-1. For axial leaded configurations, the 1N5261B-1 serves as a mechanical equivalent. Verify pinout compatibility and thermal performance when substituting.