1N5263B BK

Single Zener Diodes Overview

The Central Semiconductor Corp 1N5263B BK is a silicon Zener diode designed for voltage regulation. It features a nominal Zener voltage of 56 V with a ±5% tolerance, tested at a current of 2.2 mA. The device dissipates up to 500 mW and operates within a temperature range of -65 °C to +200 °C. Key electrical characteristics include a maximum reverse leakage current of 0.1 µA at 43 V and a maximum Zener impedance of 150 Ω.

Single Zener Diodes Feature Summary

• High reliability voltage regulation utilizing silicon technology
• Robust thermal performance supporting operation up to +200 °C
• Hermetically sealed DO-35 glass package construction

Single Zener Diodes Applications

• Industrial equipment power supplies
• Commercial electronic systems
• Entertainment industry electronics
• Computer hardware circuits

Single Zener Diodes Procurement Notes

This component has been officially transitioned to End of Life status by the manufacturer. No replacement part numbers are available from Central Semiconductor Corp. Buyers must verify availability through remaining stock channels or identify alternative sources independently, as standard supply chains no longer support this specific part number.

Single Zener Diodes Selection Notes

Engineers should evaluate the 56 V nominal rating and 500 mW power dissipation limits against circuit requirements. Verify that the operating environment remains within the specified -65 °C to +200 °C junction temperature range. Consider the high dynamic impedance when designing precision reference applications.

Single Zener Diodes Part Context

The 1N5263B BK belongs to the 1N5221B through 1N5278B series of 500 mW silicon Zener diodes manufactured by Central Semiconductor Corp. This series utilizes a DO-35 axial leaded package and provides standardized voltage options ranging from 2.4 V to 170 V for general-purpose regulation tasks.

Single Zener Diodes Replacement Considerations

No direct replacement part numbers are provided by the manufacturer for this discontinued item. Users requiring an equivalent component must source alternatives from other manufacturers or utilize generic equivalents that match the required voltage, power, and package specifications.