C5071 PDF – 400V, 12A, NPN, Equivalent, 2SC5071 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.

Part Number: C5071, 2SC5071

Function: 400V, 12A, Silicon NPN Transistor

Package: TO-3P Type

Manufacturer: Sanken electric

Images:C5071 pdf transistor


The C5071 is Silicon NPN Triple Diffused Planar Transistor. Transistors of this type are commonly used in electronic circuits for switching and amplification purposes. The NPN configuration allows current to flow from the emitter to the collector when a small current is applied to the base. By controlling the base current, the transistor can be used to amplify signals, control larger currents, and perform logical operations in digital circuits.

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 = 10 V

4. Collector Current: Ic = 12 A

5. Collector Dissipation : Pc = 100 W ( Tc=25°C )

6. Junction Temperature: Tj = 150°C

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



1. Switching Regulator and General Purpose

2. High Voltage and High Speed Switchihg Transistor

C5071 PDF Datasheet

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