1N5255B TR PBFREE

Single Zener Diodes Overview

The Central Semiconductor Corp 1N5255B TR PBFREE is a silicon Zener diode with a nominal voltage of 28 V and a tolerance of ±5%. It operates within a power dissipation range of 500 mW at 75°C ambient temperature. The device features a maximum reverse current of 0.1 mA at 21 V and a maximum Zener impedance of 44 Ω at the test current of 4.5 mA. It utilizes a DO-35 axial through-hole package and supports an operating junction temperature from -65°C to +200°C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation for industrial, commercial, entertainment, and computer applications.
• Features high reliability designed for robust operational environments.
• Utilizes a standard DO-35 axial leaded package for through-hole mounting.

Single Zener Diodes Applications

• Industrial equipment voltage regulation
• Commercial electronic circuit protection
• Entertainment system power management
• Computer hardware voltage stabilization

Single Zener Diodes Procurement Notes

Verify component authenticity by checking for the 'C' prefix followed by the full part number or the specific marking code on the device body. Ensure procurement channels are authorized to maintain warranty coverage. Confirm that the ordering suffix matches the required plating specification, as Pb-Free devices require the specific suffix indicated in official documentation.

Single Zener Diodes Selection Notes

Select this component when a precise 28 V reference is required with tight ±5% tolerance. Consider the 500 mW power rating and DO-35 package constraints for thermal management. Evaluate the maximum Zener impedance and reverse leakage characteristics against circuit sensitivity requirements. Verify compatibility with the intended operating temperature range of -65°C to +200°C.

Single Zener Diodes Part Context

This component belongs to the 1N5221B through 1N5278B series of silicon Zener diodes manufactured by Central Semiconductor Corp. The series covers a wide voltage range from 2.4 V to 170 V, all housed in the DO-35 case. The 'B' suffix specifically denotes a ±5% voltage tolerance, distinguishing it from tighter tolerance variants like 'C' (±2%) or 'D' (±1%).

Single Zener Diodes Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. The manufacturer notes that certain high-voltage devices in this series have been transitioned to End of Life status without direct replacements listed for this specific part number.