This part is a kind of semiconductor called C4408.

Function of this product has 2SC4408.

Manufacturers : Toshiba Semiconductor

Image and pinout :

Some of the text within the PDF file :

Power Amplifier Applications

Power Switching Applications

• Low saturation voltage: VCE (sat) = 0.5 V (max) (IC = 1 A)

• High collector power dissipation: PC = 900 mW

• High-speed switching: tstg = 500 ns (typ.)

• Complementary to 2SA1680

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C4408 PDF Datasheet Download