1N5248BUR-1

Single Zener Diodes Overview

The Microchip Technology 1N5248BUR-1 is a surface mount Zener voltage regulator with a nominal breakdown voltage of 18 V. It operates within a junction temperature range of -65 °C to +175 °C and dissipates up to 0.5 W. The device features a metallurgically bonded glass DO-213AA package, offering hermetic sealing. Electrical characteristics include a maximum dynamic impedance of 21 Ohms at the test current of 7.0 mA, a reverse leakage current of 0.1 µA, and a positive temperature coefficient of +0.085 %/°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 (ESD)
• Minimal capacitance for high-frequency applications

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• Radiation-hardened circuit designs
• High-reliability surface mount electronics

Single Zener Diodes Procurement Notes

Verify the specific suffix letters on the part number to confirm the exact voltage tolerance required for the application. Confirm RoHS compliance status if environmental regulations apply, as commercial versions are available in compliant configurations. Ensure the ordering suffix matches the desired reliability level and screening options provided by the manufacturer.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed surface mount equivalent to the axial-leaded 1N5248B is required. The device provides a stable 18 V reference with a defined positive temperature coefficient. Consider the low capacitance characteristic for signal integrity in sensitive circuits. Verify that the 0.5 W power dissipation rating aligns with the thermal management capabilities of the target PCB footprint.

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 JEDEC registered 1N5221 to 1N5281 axial-leaded series. The series covers a wide voltage selection from 2.4 V to 200 V. The 1N5248BUR-1 specifically addresses the 18 V requirement within this extensive lineup of 0.5 W Zener regulators.

Single Zener Diodes Replacement Considerations

The 1N5248B-1 is the axial-leaded equivalent within the same product family.