1N4728A BK

Description：DIODE ZENER 3.3V 1W DO41
Series：-
Mfr：Central Semiconductor Corp
Package：Bulk

SKU:093a39a0a60c Category: Single Zener Diodes Brand: Central Semiconductor Corp

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Product introduction

1N4728A BK is listed in the Single Zener Diodes range at ChipApex. The manufacturer field lists Central Semiconductor Corp. Its product description is DIODE ZENER 3.3V 1W DO41. Review the specifications below when checking this part for your BOM.

Single Zener Diodes specifications for 1N4728A BK

Description：DIODE ZENER 3.3V 1W DO41
Series：-
Mfr：Central Semiconductor Corp
Package：Bulk
Voltage - Zener (Nom) (Vz)：3.3 V
Tolerance：±5%
Power - Max：1 W
Impedance (Max) (Zzt)：10 Ohms
Current - Reverse Leakage @ Vr：100 µA @ 1 V
Operating Temperature：-65°C ~ 200°C
Mounting Type：Through Hole
Package / Case：DO-204AL, DO-41, Axial
Voltage - Forward (Vf) (Max) @ If：1.2 V @ 200 mA
Grade：-
Qualification：-

Single Zener Diodes datasheet and documents for 1N4728A BK

1N4728A BK

Single Zener Diodes Overview

The Central Semiconductor Corp 1N4728A BK is a silicon Zener diode designed for voltage regulation. It features a DO-41 glass package with a nominal Zener voltage of 3.3 V and a tolerance of ±5%. The device has a maximum power dissipation of 1.0 W at 50°C, a test current of 76 mA, and a maximum reverse leakage current of 100 µA. Operating temperatures range from -65°C to +200°C.

Single Zener Diodes Feature Summary

Hermetically sealed glass construction in the DO-41 case
High reliability voltage regulation for industrial applications
Oxide passivated die for enhanced stability

Single Zener Diodes Applications

Industrial equipment voltage regulation
Commercial electronics power supplies
Entertainment system circuitry
Computer hardware protection

Single Zener Diodes Procurement Notes

This component is officially classified as End of Life (EOL) by Central Semiconductor Corp. No replacement part numbers are available. Procurement should focus on verifying stock availability or identifying alternative sources through manufacturer engineering support.

Single Zener Diodes Selection Notes

Select this component only if legacy compatibility is required. Verify that the 3.3 V nominal voltage and 1.0 W power rating meet the specific circuit requirements. Confirm that the DO-41 through-hole package fits the design constraints.

Single Zener Diodes Part Context

The 1N4728A belongs to the 1N47 series of 1-watt silicon Zener diodes manufactured by Central Semiconductor. These devices utilize planar technology and are packaged in the standard DO-41 axial leaded format. The series covers a wide voltage range from 3.3V to 100V.

Single Zener Diodes Replacement Considerations

No direct replacement part numbers are provided by the manufacturer. The product is discontinued and marked as End of Life (EOL). Contacting Central Semiconductor engineering may assist in locating alternate sources.