2SD1557 PDF Datasheet – 150V, 2A, NPN Transistor

This post explains for the transistor.

The Part Number is 2SD1557, D1557.

The function of this transistor is 150V, 2A, NPN Transistor.

The package is TO-3P Type

Manufacturer: ETC, Renesas, Hitachi Semiconductor

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2SD1557 pdf datasheet


The 2SD1557 is NPN Silicon Triple Diffused Transistor. The NPN Silicon Triple Diffused Transistor is a type of bipolar junction transistor (BJT) that is commonly used in electronic circuits. It is called “triple diffused” because it has three diffused layers in the transistor structure. These diffused layers help improve the transistor’s performance in terms of speed, power handling capability, and switching characteristics.

The triple diffused layers in this transistor type help improve the device’s characteristics such as high-frequency response, power handling capability, and switching speeds. These transistors are commonly used in power amplifiers, switching applications, and high-frequency circuits.

Absolute maximum ratings ( Ta=25°C )

1. Collector to Base Voltage: Vcbo = 200 V

2. Collector to Emitter Voltage: Vceo = 150 V

3. Emitter to Base Voltage: Vebo = 5 V

4. Collector Current: Ic = 2 A

5. Collector Dissipation : Pc = 20 W

6. Junction Temperature: Tj = 150°C

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



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2SD1557 PDF Datasheet

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