1N5237BUR-1

Single Zener Diodes Overview

The Microchip Technology 1N5237BUR-1 is a surface-mount Zener voltage regulator with an 8.2 V nominal breakdown voltage and ±5% tolerance. It operates within a -65°C to +175°C junction temperature range and dissipates up to 0.5 W. The device features a hermetically sealed DO-213AA glass package with internal metallurgical bonding. Electrical characteristics include a maximum dynamic impedance of 8 Ohms at 20 mA test current, a reverse leakage current of 3 µA at 6.5 V, and a positive temperature coefficient of +0.062 %/°C.

Single Zener Diodes Feature Summary

• Hermetically sealed glass surface mount package with internal metallurgical bond
• Surface mount equivalent to JEDEC registered axial-leaded series
• Inherently radiation hard per Microsemi specifications
• Non-sensitive to electrostatic discharge

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• Reference voltage generation in precision circuits
• Protection against overvoltage transients

Single Zener Diodes Procurement Notes

Verify the specific suffix configuration when ordering, as it determines voltage tolerance and RoHS compliance status. Confirm whether commercial or screened versions are required for the intended application environment. Ensure the procurement documentation matches the exact part number nomenclature to guarantee correct electrical parameters and package type.

Single Zener Diodes Selection Notes

Select this component for applications requiring a robust surface-mount solution that replaces traditional axial leads without sacrificing reliability. The metallurgically bonded construction provides superior stability compared to standard plastic packages. Consider the positive temperature coefficient for thermal compensation requirements in the target circuit design.

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 widely used JEDEC registered 1N5221 through 1N5281 axial series. The series covers a voltage range from 2.4 V to 200 V, offering various tolerance options including 1%, 2%, 5%, and 10% variants identified by specific suffix letters.

Single Zener Diodes Replacement Considerations

Direct physical replacement for axial 1N5237B devices using appropriate footprint adapters. Verify compatibility with existing board space constraints due to the DO-213AA package dimensions.