1N5267BUR-1

Single Zener Diodes Overview

The Microchip Technology 1N5267BUR-1 is a 0.5 W Zener voltage regulator in a hermetically sealed DO-213AA (SOD80/MLL34) surface mount package. It provides a nominal Zener voltage of 75 V at a test current of 1.7 mA with a 5% tolerance. Key electrical parameters include a maximum reverse leakage current of 100 nA, a dynamic impedance of 270 Ohms, and a temperature coefficient of +0.098 %/°C. The device operates within a junction and storage temperature range of -65°C to +175°C.

Single Zener Diodes Feature Summary

• Hermetically sealed glass surface mount package with internal metallurgical bond for high reliability.
• Surface mount equivalent to the JEDEC registered 1N5221 through 1N5281 series.
• 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 aerospace and defense circuits requiring radiation hardness.
• Precision reference applications utilizing low capacitance characteristics.

Single Zener Diodes Procurement Notes

Verify the specific suffix letters on the part number to confirm voltage tolerance requirements, as tighter tolerances are identified by different suffixes. Confirm RoHS compliance status if required, noting that commercial versions may differ from military screening options. Ensure the ordering suffix matches the desired reliability level and packaging configuration before finalizing procurement.

Single Zener Diodes Selection Notes

Select this component when a surface mount solution is needed for voltages up to 200 V with strict thermal and environmental constraints. The DO-213AA package offers a direct footprint replacement for axial-leaded equivalents. Consider the positive temperature coefficient above 5.6 V when designing circuits sensitive to thermal drift. Verify power derating curves against the expected ambient temperature and board copper area.

Single Zener Diodes Part Context

This device belongs to the 1N5221BUR-1 through 1N5281BUR-1 series of metallurgically bonded glass surface mount Zeners. The series covers a wide voltage range from 2.4 V to 200 V. The manufacturer also offers axial-leaded versions (1N5221B-1 thru 1N5281B-1) and various reliability screening levels including JAN, JANTX, and JANS references.

Single Zener Diodes Replacement Considerations

The datasheet lists the 1N5221B-1 through 1N5281B-1 series as available alternatives in an axial-leaded DO-35 package. No other specific surface mount substitute part numbers are confirmed in the provided documentation.