1N5274BUR-1

Single Zener Diodes Overview

The Microchip Technology 1N5274BUR-1 is a 0.5 W Zener voltage regulator in a hermetically sealed DO-213AA (SOD80/MLL34) surface mount package. It provides a nominal Zener voltage of 130 V with a ±5% tolerance at a test current of 0.95 mA. The device features a maximum reverse leakage current of 4500 µA and a dynamic impedance of 1100 Ohms at the test point. Operating temperatures range from -65°C to +175°C, with a positive temperature coefficient of +0.110 %/°C.

Single Zener Diodes Feature Summary

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

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• Spacecraft avionics data acquisition systems
• Radiation-hardened electronic circuits

Single Zener Diodes Procurement Notes

Verify the specific suffix letters on the part number to confirm the exact voltage tolerance required for the application. Confirm whether RoHS compliance is necessary, as commercial grade versions are available with this designation while others may not be. Ensure the ordering quantity aligns with factory packaging options if tape and reel delivery is preferred over bulk.

Single Zener Diodes Selection Notes

Select this component when a surface mount equivalent to the axial 1N5274B is required. The 130 V rating suits high-voltage regulation tasks where low capacitance is critical. Verify that the thermal resistance and power dissipation limits fit the PCB layout constraints. Consider the positive temperature coefficient for stability requirements across the specified temperature range.

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 JEDEC registered 1N5221 to 1N5281 axial series. Manufactured by Microchip Technology, these regulators utilize a metallurgically bonded configuration to ensure reliability in demanding environments.

Single Zener Diodes Replacement Considerations

The 1N5274B is the direct axial leaded equivalent within the same series. Other variants in the 1N5221-1N5281 family offer different voltage ratings but share similar package and power characteristics.