1N5263BUR-1/TR

Single Zener Diodes Overview

The Microchip Technology 1N5263BUR-1/TR is a surface mount Zener voltage regulator with a nominal breakdown voltage of 56 V and a maximum power dissipation of 0.5 W. It features a 5% voltage tolerance, a test current of 2.2 mA, and a maximum dynamic impedance of 150 Ohms at the test point. The device operates within a junction temperature range of -65°C to +175°C and utilizes a hermetically sealed DO-213AA (MELF) package.

Single Zener Diodes Feature Summary

• Hermetically sealed metallurgically bonded glass surface mount package
• Surface mount equivalent of JEDEC registered 1N5221 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 radiation hardness
• ESD non-sensitive circuit protection applications

Single Zener Diodes Procurement Notes

Verify that the ordering suffix TR indicates tape and reel packaging per EIA-481-B standards. Confirm the B suffix denotes the specific 5% voltage tolerance required for the application. Ensure compatibility with the specified DO-213AA footprint and check for RoHS compliance requirements if applicable to the commercial grade version.

Single Zener Diodes Selection Notes

Select this component when a 56 V reference is needed in a compact surface mount form factor. The 0.5 W power rating supports moderate current loads. Consider the positive temperature coefficient above 5 V and the 150 Ohm dynamic impedance for precision regulation needs. Verify thermal derating curves against the expected ambient conditions on the FR4 board.

Single Zener Diodes Part Context

This part belongs to the 1N5221BUR-1 through 1N5281BUR-1 series, which provides surface mount equivalents to the traditional axial-leaded JEDEC registered diodes. The series covers a wide voltage range from 2.4 V to 200 V, offering various tolerance options including 1%, 2%, 5%, and 10% configurations.

Single Zener Diodes Replacement Considerations

The 1N5263BUR-1 is a parameter-equivalent replacement for the 1N5263BUR-1/TR variant.