1N5239BUR-1

Single Zener Diodes Overview

The Microchip Technology 1N5239BUR-1 is a surface mount Zener voltage regulator featuring a metallurgically bonded glass DO-213AA package. It provides a nominal Zener voltage of 9.1 V with a 5% tolerance at a test current of 20 mA. The device supports a maximum power dissipation of 0.5 W and operates within a junction temperature range of -65°C to +175°C. Key electrical characteristics include a maximum dynamic impedance of 10 Ohms, a reverse leakage current of 3 µA, and a positive temperature coefficient of 0.068 %/°C.

Single Zener Diodes Feature Summary

• Hermetically sealed metallurgically bonded glass construction for environmental stability
• Surface mount equivalent to the JEDEC registered 1N5221 through 1N5281 series
• Inherently radiation hard design suitable for demanding environments

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• Reference voltage generation in precision circuits
• Protection against electrostatic discharge (ESD)

Single Zener Diodes Procurement Notes

Verify that the ordering suffix corresponds to the specific reliability level and RoHS compliance status required for the application. Confirm the package type matches the intended footprint, as axial-leaded versions exist under different part numbers. Ensure the selected variant meets any necessary military screening standards if applicable to the project specifications.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed surface mount Zener diode is required for high-reliability applications. The 9.1 V rating and 5% tolerance suit precise reference needs. Consider the positive temperature coefficient for thermal compensation designs. Verify compatibility with the DO-213AA footprint during PCB layout.

Single Zener Diodes Part Context

This device belongs to the 1N5221BUR-1 through 1N5281BUR-1 series, which offers surface mount equivalents to popular axial-leaded JEDEC registered Zener diodes. The series covers a wide voltage range from 2.4 V to 200 V. The BUR-1 designation specifically indicates the metallurgically bonded surface mount configuration in the DO-213AA package.

Single Zener Diodes Replacement Considerations

The axial-leaded 1N5239B serves as a parameter-equivalent alternative. Surface mount variants such as CDLL5239B offer similar electrical characteristics but may differ in package dimensions.