1N5270BUR-1

Single Zener Diodes Overview

The Microchip Technology 1N5270BUR-1 is a surface mount Zener voltage regulator with a nominal breakdown voltage of 91 V and a 5% tolerance. It operates within a power dissipation limit of 0.5 W and features a hermetically sealed DO-213AA (MELF) package. The device exhibits a maximum reverse leakage current of 68 µA at the specified voltage, a dynamic impedance of 400 Ohms at the test current of 1.4 mA, and a positive temperature coefficient of +0.099 %/°C.

Single Zener Diodes Feature Summary

• Hermetically sealed metallurgically bonded glass surface mount package
• Inherently radiation hard per Microsemi documentation
• 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 circuitry
• Industrial electronics requiring robust surface mount components

Single Zener Diodes Procurement Notes

Verify that the specific part number suffix matches the required voltage tolerance and RoHS compliance status. Confirm whether MIL-PRF-19500 screening is necessary for the intended application environment. Ensure the ordering quantity aligns with tape and reel specifications if automated assembly is utilized.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed surface mount equivalent to the axial 1N5270 is required. Consider the 91 V nominal rating and 0.5 W power dissipation limits against the circuit requirements. Evaluate the positive temperature coefficient for thermal stability needs in the target operating range.

Single Zener Diodes Part Context

This device belongs to the 1N5221BUR-1 through 1N5281BUR-1 series, which provides surface mount equivalents to the JEDEC registered 1N5221 to 1N5281 series. The series covers a voltage range from 2.4 to 200 volts in a metallurgically bonded configuration, offering various tolerance options identified by suffix letters.

Single Zener Diodes Replacement Considerations

The 1N5270B serves as the axial-leaded equivalent. Verify package compatibility and pinout alignment during substitution.