1N5238BUR-1/TR

Single Zener Diodes Overview

The Microchip Technology 1N5238BUR-1/TR is a surface mount Zener voltage regulator in the DO-213AA (MELF) package. It provides a nominal Zener voltage of 8.7 V with a ±5% tolerance at a test current of 20 mA. The device features a maximum power dissipation of 0.5 W and operates within a junction temperature range of -65°C to +175°C. Electrical characteristics include a maximum dynamic impedance of 8 Ohms, a reverse leakage current of 3 µA at 6.2 V, and a forward voltage of 1.1 V at 200 mA.

Single Zener Diodes Feature Summary

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

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• High-reliability electronic circuits requiring hermetic sealing
• Radiation-hardened system designs

Single Zener Diodes Procurement Notes

Verify that the specific part number includes the TR suffix for tape and reel packaging configuration. Confirm RoHS compliance status as it applies only to commercial grade versions. Ensure ordering aligns with the specified metallurgically bonded construction and surface mount requirements for 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 1N5238BUR-1 offers a specific 8.7 V breakdown voltage with tight tolerance. Consider the thermal resistance and derating curves if operating near maximum power dissipation limits or elevated ambient temperatures.

Single Zener Diodes Part Context

This component belongs to the 1N5221BUR-1 through 1N5281BUR-1 series, which serves as the surface mount counterpart to the traditional JEDEC registered 1N5221 to 1N5281 axial-leaded series. The series covers a wide voltage range from 2.4 V to 200 V in a compact metallurgically bonded glass package suitable for automated assembly processes.

Single Zener Diodes Replacement Considerations

The 1N5238B is a parameter-equivalent alternative available in bulk packaging.