1N5255B BK TIN/LEAD

Single Zener Diodes Overview

The Central Semiconductor Corp 1N5255B BK TIN/LEAD is a single silicon Zener diode housed in a DO-35 axial through-hole package. It features a nominal Zener voltage of 28 V with a 5% tolerance and a maximum power dissipation of 500 mW at 25°C ambient temperature. The device exhibits a maximum reverse leakage current of 100 nA at 21 V and a maximum Zener impedance of 44 Ohms. It operates within a junction temperature range up to 200°C and supports high-temperature soldering conditions.

Single Zener Diodes Feature Summary

• Glass passivated junction for enhanced reliability
• Low Zener impedance characteristics
• Guaranteed high-temperature soldering capability

Single Zener Diodes Applications

• Voltage regulation circuits
• Reference voltage generation
• Overvoltage protection

Single Zener Diodes Procurement Notes

Verify the specific manufacturer designation, as the 1N5255B part number is produced by multiple vendors including Microchip Technology and MCC. Confirm that the Central Semiconductor variant matches the required electrical parameters, specifically the 500 mW power rating and 28 V Zener voltage, before procurement. Ensure the tin/lead lead finish aligns with assembly requirements.

Single Zener Diodes Selection Notes

Select this component when a standard 28 V reference is needed in a compact axial glass package. The 500 mW rating suits low-power applications where higher wattage devices are unnecessary. Verify compatibility with existing circuit layouts designed for the DO-35 form factor and ensure thermal management meets the 200°C junction limit.

Single Zener Diodes Part Context

This component belongs to the 1N52xx series of Zener diodes, widely used for general-purpose voltage regulation. The DO-35 glass encapsulation provides environmental protection while maintaining a small footprint. The 1N5255B specifically targets the 28 V segment of this extensive family, offering consistent performance across various industrial and commercial electronics designs.

Single Zener Diodes Replacement Considerations

Direct substitutes include the 1N5255B from other manufacturers such as Microchip Technology or Vishay. Equivalent parts like the 1N5255B-TP (MCC) or 1N5255B-TAP (Vishay) share identical electrical specifications and mechanical dimensions, allowing for pin-compatible replacement without circuit redesign.