1N5237BUR-1/TR

Single Zener Diodes Overview

The Microchip Technology 1N5237BUR-1/TR is a surface mount Zener voltage regulator in a DO-213AA (MELF) package. It provides an 8.2 V nominal Zener voltage with a ±5% tolerance at a test current of 20 mA. The device dissipates up to 0.5 W and operates within a junction temperature range of -65°C to +175°C. Key electrical parameters include a maximum dynamic impedance of 8 Ohms, a reverse leakage current of 3 µA, and a positive temperature coefficient of +0.062 %/°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
• High-reliability electronic circuits requiring radiation hardness
• Surface mount equivalents for JEDEC registered axial-leaded series

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix against official documentation to confirm RoHS compliance status and tolerance grade. Confirm that the TR suffix indicates tape and reel packaging as defined by EIA-481-B standards. Ensure compatibility with MIL-PRF-19500 screening requirements if applicable to the intended application environment.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed surface mount Zener diode is required for high-reliability applications. The DO-213AA package serves as a direct surface mount equivalent to the traditional axial-leaded 1N5237B. Consider the specific thermal resistance and power derating curves when designing for ambient temperatures exceeding 50°C or end cap temperatures above 125°C.

Single Zener Diodes Part Context

This part belongs to the 1N5221BUR-1 through 1N5281BUR-1 series, which offers surface mount equivalents to popular JEDEC registered devices. The series covers a wide voltage range from 2.4 to 200 volts. The 1N5237BUR-1 specifically addresses the 8.2 V segment of this lineup, providing a robust solution for circuits needing precise voltage reference or protection in compact surface mount layouts.

Single Zener Diodes Replacement Considerations

The 1N5237B(DO-35) serves as the axial-leaded equivalent for this device family.