D2499 PDF Datasheet – 600V, 5A, NPN, Transistor, TO-3PM

This post explains for the npn transistor.

The Part Number is 2SD2499, D2499.

The function of this semiconductor is 600V, 5A, NPN Transistor.

The package is TO-3PM Type

Manufacturer: Wing Shing Computer


D2499 transistor pinout


D2499 is 600V, 5A, Silicon Power 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.

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.


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.

High voltage, high-speed switching npn transistors in a plastic envelope with integrated efficiency diode,primarily for use in horizontal deflection circuites of colour television receivers. [ … ]

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D2499 pinout datasheet

Absolute maximum ratings ( Ta=25°C )

1. Collector-emitter voltage peak value (VBE = 0V) : VCESM = 1500 V

2. Collector-emitter voltage (open base) : VCEO = 600 V

3. Collector current (DC) : IC = 5 A

4. Collector current peak value : ICM = 10 A

5. Base current (DC) : IB = 2 A

6. Total power dissipation : Ptot = 50 W

7. Storage temperature: Tstg = -55 ~ 150 ºC

8. Junction temperature : Tj =  150 ºC



D2499 PDF Datasheet

D2499 pdf

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