1N5277BUR-1/TR

Single Zener Diodes Overview

The Microchip Technology 1N5277BUR-1/TR is a surface mount Zener diode in the 1N5221BUR-1 to 1N5281BUR-1 series. It provides a 160 V nominal Zener voltage with a 5% tolerance, housed in a hermetically sealed DO-213AA (MELF) glass package. The device dissipates up to 0.5 W and operates from -65°C to +175°C. The '/TR' suffix indicates tape and reel packaging per EIA-481-B.

Single Zener Diodes Feature Summary

• Hermetically sealed metallurgically bonded glass surface mount package
• Inherently radiation hard design
• Non-sensitive to electrostatic discharge
• Minimal capacitance characteristics

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• High-reliability aerospace and defense electronics
• Harsh environment circuit protection

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix against the manufacturer's nomenclature guide to confirm RoHS compliance status and exact tolerance class. Confirm that the tape and reel quantity matches the required production volume. Ensure the component meets MIL-PRF-19500 screening requirements if specified for the application.

Single Zener Diodes Selection Notes

Select this component when a ruggedized surface mount equivalent to the axial 1N5277B is required. The DO-213AA package offers a compact footprint suitable for automated assembly. Consider the high thermal resistance and derating curves for power dissipation limits in enclosed spaces.

Single Zener Diodes Part Context

This part belongs to the 1N5221BUR-1 through 1N5281BUR-1 series of 0.5-watt Zener regulators. These devices serve as surface mount replacements for the JEDEC registered 1N5221 to 1N5281 axial series, covering voltages from 2.4 V to 200 V in a metallurgically bonded configuration.

Single Zener Diodes Replacement Considerations

Direct surface mount equivalents include the 1N5277B-1 in the axial leaded DO-35 package. For lower voltage or different tolerance requirements within the same series, consult the full 1N5221BUR-1 to 1N5281BUR-1 datasheet.