1N5235BUR-1/TR

Single Zener Diodes Overview

The Microchip Technology 1N5235BUR-1/TR is a surface mount Zener voltage regulator featuring a metallurgically bonded glass DO-213AA (MELF) package. It provides a nominal Zener voltage of 6.8 V with a 5% tolerance, tested at 20 mA. The device dissipates up to 0.5 W and operates within a junction temperature range of -65°C to +175°C. Electrical characteristics include a maximum dynamic impedance of 5.0 Ohms at the test current and a reverse leakage current of 3.0 µA at 5 V. The unit exhibits a positive temperature coefficient of +0.050 %/°C.

Single Zener Diodes Feature Summary

• Hermetically sealed metallurgically bonded glass construction in a MELF-style surface mount package.
• Screening available in reference to MIL-PRF-19500 for enhanced reliability.
• Inherently radiation hard per Microsemi documentation.
• Non-sensitive to electrostatic discharge.

Single Zener Diodes Applications

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

Single Zener Diodes Procurement Notes

Verify that the specific order includes the TR suffix to confirm tape and reel packaging compliance with EIA-481-B standards. Confirm RoHS status as commercial grade versions are distinct from non-RoHS options. Ensure the part number matches the exact tolerance level required, as the 'B' suffix denotes 5% tolerance. Cross-reference the manufacturer's nomenclature guide to validate screening levels if military specifications are mandated.

Single Zener Diodes Selection Notes

Select this component when a hermetic surface mount solution is required instead of axial leaded equivalents. The DO-213AA package offers a direct footprint alternative to traditional through-hole diodes while maintaining high thermal stability. Consider the positive temperature coefficient for applications where voltage drift with heat must be accounted for. Verify that the 0.5 W power dissipation rating aligns with the thermal management capabilities of the target PCB layout.

Single Zener Diodes Part Context

This device belongs to the 1N5221BUR-1 thru 1N5281BUR-1 series, which serves as the surface mount equivalent to the JEDEC registered 1N5221 to 1N5281 axial series. The series covers Zener voltages from 2.4 V to 200 V. The 1N5235BUR-1 specifically corresponds to the 6.8 V variant within this extensive lineup, offering consistent performance metrics across the family.

Single Zener Diodes Replacement Considerations

The datasheet identifies the 1N5235B-1 (DO-35 axial-leaded) as the corresponding through-hole version within the same product family. No other cross-manufacturer substitutes are documented in the provided source material.