1N4477 BK TIN/LEAD

Single Zener Diodes Overview

The 1N4477 BK TIN/LEAD is a single silicon Zener diode manufactured by Central Semiconductor Corp. It features a nominal Zener voltage of 33V with a maximum Zener impedance of 25 ohms and a test current of 43 mA. The device is rated for a power dissipation of 1.5W and operates within a temperature range of -65°C to +200°C. It utilizes a DO-41 through-hole package with tin/lead plating.

Single Zener Diodes Feature Summary

• High-performance silicon construction designed for robust voltage regulation
• Capable of operating at elevated temperatures up to 200°C
• Single unidirectional configuration in a standard axial leaded package

Single Zener Diodes Applications

• General purpose voltage regulation circuits
• Overvoltage protection applications
• Reference voltage sources in electronic systems

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix and plating type, as tin/lead variants may have distinct regulatory status compared to lead-free options. Confirm availability status, as this part number has been identified as obsolete in certain distributor catalogs. Ensure compatibility with existing assembly processes regarding lead content requirements before procurement.

Single Zener Diodes Selection Notes

Select this component when a 33V Zener voltage with 1.5W power handling is required in a DO-41 package. Consider the high maximum operating temperature of 200°C for demanding thermal environments. Verify that the 25-ohm Zener impedance meets the circuit's dynamic regulation needs. Check for lead-free alternatives if RoHS compliance is mandatory for the final product.

Single Zener Diodes Part Context

This component belongs to the 1N44xx series of Zener diodes from Central Semiconductor. These devices are characterized by their axial leaded plastic epoxy packages and high power ratings relative to smaller signal diodes. The series offers various voltage options, with the 1N4477 providing a specific 33V regulation point.

Single Zener Diodes Replacement Considerations

Publicly confirmed substitute part numbers were not found in the provided source material. Users should consult manufacturer cross-reference guides or datasheets for equivalent 33V 1.5W DO-41 Zener diodes.