1N5255B

Single Zener Diodes Overview

The onsemi 1N5255B is a single silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 28 V with a tolerance of ±5%. The device dissipates up to 500 mW of power and operates within a temperature range of -65 °C to +200 °C. Key electrical characteristics include a maximum reverse leakage current of 100 nA, a Zener impedance of 44 Ohms, and a test current of 9.1 mA. It is housed in a DO-35 axial through-hole package.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation at a nominal 28 V level
• Capable of handling 500 mW power dissipation
• Constructed with a glass DO-35 axial package for through-hole mounting

Single Zener Diodes Applications

• Voltage reference circuits
• Overvoltage protection stages
• General-purpose voltage regulation

Single Zener Diodes Procurement Notes

Verify the specific manufacturer source when sourcing this component, as multiple vendors produce parts under the same JEDEC designation. Confirm that the received unit matches the onsemi manufacturing origin if brand specificity is required for the design. Ensure the package type corresponds to the DO-35 form factor specified in the datasheet before integration into the assembly process.

Single Zener Diodes Selection Notes

Select this component when a precise 28 V regulation point is needed with moderate power handling capabilities. The low leakage current and defined impedance make it suitable for sensitive analog references. Consider the thermal derating requirements if the operating environment exceeds standard ambient temperatures to ensure reliable long-term performance within the specified junction limits.

Single Zener Diodes Part Context

This part belongs to the widely used 1N52xx series of 500 mW Zener diodes. These components are standard industry replacements for various voltage regulation tasks. The 1N5255B specifically targets the 28 V segment of this extensive lineup, offering consistent performance across different manufacturers while maintaining standardized mechanical and electrical parameters for broad compatibility.