1N5255B BK PBFREE

Single Zener Diodes Overview

The Central Semiconductor Corp 1N5255B BK PBFREE is a silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 28 V with a ±5% tolerance, dissipating up to 500 mW at 75°C ambient temperature. The device operates within a junction and storage temperature range of -65°C to +200°C. Packaged in the DO-35 axial through-hole configuration, it exhibits a maximum Zener impedance of 44 Ω at the test current of 4.5 mA and maintains a reverse leakage current of no more than 0.1 μA at 21 V.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation using highly reliable silicon construction
• Features tight manufacturing tolerance for precise voltage control
• Supports extended thermal operation across wide industrial temperature ranges

Single Zener Diodes Applications

• Industrial circuit protection
• Commercial power supply regulation
• Computer system voltage reference

Single Zener Diodes Procurement Notes

Verify component authenticity by purchasing exclusively through authorized Central Semiconductor channels or franchised distributors. Unverified sources may compromise warranty coverage and product reliability. Confirm RoHS compliance status and specific package markings against official datasheets prior to integration into production lines.

Single Zener Diodes Selection Notes

Select this component when a 28 V reference with ±5% accuracy is required in an axial leaded package. Ensure the application current does not exceed limits that would cause power dissipation beyond 500 mW. Verify that the operating environment remains within the specified -65°C to +200°C junction temperature range for optimal performance.

Single Zener Diodes Part Context

This part belongs to the 1N5221B through 1N5278B series of 500 mW silicon Zener diodes manufactured by Central Semiconductor. The series utilizes the standard DO-35 case outline for through-hole mounting. The 'BK' suffix indicates bulk packaging, while 'PBFREE' denotes lead-free plating compliant with environmental regulations.

Single Zener Diodes Replacement Considerations

No direct replacement part numbers are listed in the official documentation for this specific item.