C4423 Transistor – 400V, 12A, NPN, Datasheet, 2SC4423

Part Number: C4423, 2SC4423

Function: 400V, 12A, NPN Transistor

Package: TO-220 Type

Manufacturer: Sanyo Semiconductor Corporation


1 page
C4423 pdf pinout



C4423 is 400V, 12A, NPN Triple Diffused Planar Silicon Transistor.

A NPN transistor is a type of bipolar junction transistor (BJT) that consists of two n-type semiconductor materials separated by a single p-type material.

The NPN transistor is used to amplify or switch electronic signals and is widely used in many electronic circuits. It works by controlling the current flow between the collector and emitter terminals through the base terminal.

When a small current is applied to the base, it controls a much larger current between the collector and emitter, making the NPN transistor an effective amplifier or switch.


NPN Configuration

1. Emitter (N): The heavily doped N-type layer, which is the source of charge carriers (electrons) in the transistor.

2. Base (P): The thin P-type layer, which controls the flow of charge carriers between the emitter and collector.

3. Collector (N): The N-type layer, which collects the charge carriers that pass through the base-emitter junction.



1. High breakdown voltage, high reliability.

2. Fast switching speed (tf : 0.1µs typ).

3. Wide ASO.

4. Adoption of MBIT process.

5. Micaless package facilitating easy mounting




3 page
C4423 datasheet

Absolute maximum ratings ( Ta=25°C )

1. Collector to Base Voltage: Vcbo = 500 V

2. Collector to Emitter Voltage: Vceo = 400 V

3. Emitter to Base Voltage: Vebo = 7 V

4. Collector Current: Ic = 12 A

5. Collector Dissipation : Pc = 3 W

6. Junction Temperature: Tj = 150°C

7. Storage Temperature: Tsg = -55 ~ +150°C



1. Switching Regulator

C4423 PDF Datasheet