1N5280BUR-1/TR

Single Zener Diodes Overview

The Microchip Technology 1N5280BUR-1/TR is a surface mount Zener voltage regulator with a nominal breakdown voltage of 190 V. It operates within a maximum steady-state power dissipation of 0.5 W and features a metallurgically bonded glass DO-213AA package. The device maintains a tight voltage tolerance of ±5% and exhibits a positive temperature coefficient of +0.110 %/°C. Electrical testing specifies a maximum dynamic impedance of 2400 Ohms at the test current of 0.66 mA, alongside a reverse leakage current limit of 0.1 µA.

Single Zener Diodes Feature Summary

• Hermetically sealed surface mount configuration utilizing internal metallurgical bonding for enhanced reliability.
• Inherently radiation hard design suitable for demanding environmental conditions.
• Non-sensitive to electrostatic discharge events per MIL-STD-750 method 1020.
• Minimal capacitance characteristics optimized for high-frequency signal integrity.

Single Zener Diodes Applications

• Voltage regulation across broad operating current and temperature ranges.
• Reference voltage generation in precision electronic circuits.
• Overvoltage protection stages in sensitive semiconductor interfaces.

Single Zener Diodes Procurement Notes

Verify that the ordering suffix TR confirms tape and reel packaging compliance with EIA-481-B standards. Confirm RoHS status as commercial grade versions are available while others may not be compliant. Ensure the specific part number matches the required ±5% tolerance designation. Validate that the manufacturer documentation aligns with the requested revision level before finalizing procurement orders.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed surface mount Zener diode is required for 190 V regulation. The DO-213AA package provides a direct footprint equivalent to axial JEDEC counterparts. Consider the positive temperature coefficient for thermal stability requirements. Verify that the 0.5 W power rating accommodates the expected load currents without exceeding junction temperature limits.

Single Zener Diodes Part Context

This device belongs to the 1N5221BUR-1 through 1N5281BUR-1 series of metallurgically bonded glass surface mount Zeners. The series spans voltages from 2.4 V to 200 V, offering various tolerance options including 1%, 2%, 5%, and 10%. The BUR-1 designation specifically indicates the standard 5% tolerance variant within this robust surface mount family.

Single Zener Diodes Replacement Considerations

1N5280BUR-1