1N4478 BK TIN/LEAD

Single Zener Diodes Overview

The Central Semiconductor Corp 1N4478 BK TIN/LEAD is a through-hole silicon Zener diode housed in a DO-41-2 axial package. It features a nominal Zener voltage of 36 V with a 5% tolerance and a maximum power dissipation of 1.5 W. The device operates within a temperature range of -65 °C to +175 °C, exhibiting a Zener impedance of 27 Ohms at a test current of 7 mA. Maximum reverse leakage current is specified at 0.05 uA, supporting reliable voltage regulation in industrial and commercial applications.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation via controlled avalanche breakdown characteristics
• Engineered for high-temperature operation up to 175 °C
• Constructed with robust silicon material for long-term reliability

Single Zener Diodes Applications

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

Single Zener Diodes Procurement Notes

Verify the specific suffix against manufacturer documentation to confirm lead-free status or tin/lead plating variations. Confirm RoHS compliance details directly with the supplier, as regulatory status may vary by production batch. Ensure the ordering part number matches the exact electrical specifications required for the design.

Single Zener Diodes Selection Notes

Select this component when a 36 V reference is needed in an axial package capable of handling 1.5 W dissipation. Consider the 27 Ohm dynamic impedance for noise sensitivity requirements. Verify that the operating environment stays within the -65 °C to +175 °C range to maintain specified performance levels.

Single Zener Diodes Part Context

This component belongs to the 1N4478 series of silicon Zener diodes manufactured by Central Semiconductor. These devices are designed for general-purpose voltage regulation tasks. The series offers various voltage options within the same mechanical footprint, allowing for standardized PCB layouts across different circuit designs requiring similar power handling capabilities.

Single Zener Diodes Replacement Considerations

Consult official substitution guides for equivalent parts from other manufacturers. Verify pinout compatibility and thermal resistance values before implementing any alternative components in existing designs.