C2553 PDF Datasheet – 2SC2553, NPN Transistor – Toshiba

This post explains for the transistor.

The Part Number is C2553, 2SC2553. The package is TO-220AB Type.

The function of this semiconductor is 400V, 5A, Silicon NPN transistor.

Manufacturer: Toshiba


C2553 datasheet pinout


The C2553 is 400V, 5A, Silicon NPN 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.

Characteristics of NPN Transistors:

1. Bipolar Junction: NPN transistors are bipolar junction transistors (BJT), meaning they have a structure consisting of three regions of alternating P-type and N-type semiconductors.

2. Current Amplification: NPN transistors are designed to amplify electrical current, and can be used in a wide range of electronic applications such as amplifiers, switches, and oscillators.

3. Forward Biased: In order to operate, the base-emitter junction of an NPN transistor must be forward biased, meaning that the base must be connected to a positive voltage relative to the emitter.

4. High Input Impedance: NPN transistors have a high input impedance, which means that they are less likely to draw current from the input source, and are therefore less likely to cause a drop in voltage across the source.

5. Inverted Output: NPN transistors are known for producing an inverted output relative to their input. That is, if the input signal is high, the output signal will be low, and vice versa. This behavior is due to the way the transistor is designed and is an important characteristic for many electronic applications.

C2553 pdf

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 = 1 A
5. Total Dissipation : Pc = 1.5 W
6. Junction Temperature: Tj = 150°C
7. Storage Temperature: Tsg = -55 ~ +150°C



1. Switching regulator and high voltage switching

2. High speed DC-DC converter

C2553 transistor

C2553 PDF Datasheet

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