1N5253BUR-1/TR

Single Zener Diodes Overview

The Microchip Technology 1N5253BUR-1/TR is a surface mount Zener voltage regulator with a nominal breakdown voltage of 25 V and a 5% tolerance. It operates within a junction temperature range of -65°C to +175°C and dissipates up to 0.5 W. The device utilizes a hermetically sealed DO-213AA (MELF) package with an internal metallurgical bond. Electrical characteristics include a maximum reverse leakage current of 100 nA, a dynamic impedance of 35 Ohms at the test current, and a positive temperature coefficient of 0.089 %/°C.

Single Zener Diodes Feature Summary

• Hermetically sealed glass MELF package with internal metallurgical bonding for environmental stability.
• Surface mount equivalent to JEDEC registered axial-leaded series.
• Inherently radiation hard per Microsemi documentation.

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges.
• ESD protection in circuits requiring minimal capacitance.

Single Zener Diodes Procurement Notes

Verify that the specific part number suffix matches the required RoHS compliance status and tape-and-reel packaging configuration. Confirm that the ordering designation aligns with the intended reliability level and tolerance specifications before finalizing procurement orders.

Single Zener Diodes Selection Notes

Select this component when a ruggedized surface mount solution is required for space-constrained designs. Ensure the thermal management strategy accommodates the specified power dissipation limits and ambient temperature conditions during operation.

Single Zener Diodes Part Context

This device belongs to the 1N5221BUR-1 through 1N5281BUR-1 series of 0.5 watt Zener regulators. It serves as a direct surface mount replacement for traditional axial-leaded components while maintaining high reliability standards suitable for demanding electronic environments.

Single Zener Diodes Replacement Considerations

The non-tape version 1N5253BUR-1 is a parameter-equivalent alternative. Verify package compatibility and polarity marking alignment when substituting between bulk and reel configurations.

Single Zener Diodes FAQ

What is the maximum solder temperature allowed?

The maximum solder temperature is 260°C applied for a duration of 10 seconds.

How is cathode polarity indicated on the package?

Polarity is indicated by a cathode band on the device body; the banded end must be connected positively relative to the opposite end for Zener regulation.