1N5255B/TR

Single Zener Diodes Overview

The Microchip Technology 1N5255B/TR is a silicon unidirectional voltage regulator diode designed for through-hole mounting. It features a DO-7 (DO-35) glass passivated junction package with a power dissipation rating of 500 mW at 25°C ambient temperature. The device provides a nominal Zener voltage of 28 V with a tolerance of 5%. Key electrical characteristics include a maximum reverse leakage current of 100 nA, a Zener impedance of 44 Ohms, and a test current of 4.5 mA. It operates within a temperature range of -65°C to +200°C.

Single Zener Diodes Feature Summary

• Glass passivated junction construction ensures high reliability and stability under thermal stress.
• Low Zener impedance and regulation factor provide precise voltage control in regulator circuits.
• Guaranteed high-temperature soldering capability supports robust assembly processes.

Single Zener Diodes Applications

• Voltage reference applications requiring stable DC levels
• Overvoltage protection circuits for sensitive electronic components
• General-purpose voltage regulation in industrial equipment

Single Zener Diodes Procurement Notes

Verify the specific suffix 'TR' indicates tape and reel packaging when sourcing this component. Confirm that the DO-7 package designation aligns with your PCB footprint requirements. Ensure the 5% voltage tolerance meets your circuit design specifications before finalizing procurement orders.

Single Zener Diodes Selection Notes

Select this component for designs requiring a 28 V regulation point with tight tolerance. Consider the 500 mW power dissipation limit when determining thermal management needs. Verify compatibility with through-hole assembly methods and ensure the operating temperature range suits the intended environment.

Single Zener Diodes Part Context

This part belongs to the 1N52xx series of Zener diodes manufactured by Microchip Technology. These devices are widely used in discrete semiconductor applications where reliable voltage regulation is critical. The series offers various voltage options within a standardized glass-encapsulated form factor.

Single Zener Diodes Replacement Considerations

Cross-reference with other manufacturers offering 1N5255 equivalents. Verify pinout compatibility and ensure replacement parts meet the same 28 V Zener voltage and 500 mW power dissipation ratings. Check for identical package dimensions to maintain mechanical fit.