This part is a kind of semiconductor called C4689.

Function of this product has 2SC4689.

Manufacturers : Toshiba

Image and pinout :

Some of the text within the PDF file :

TOSHIBA Transistor Silicon NPN Triple Diffused Type 2SC4689 Power Amplifier Applications 2SC4689 Unit: mm • Complementary to 2SA1804 • Suitable for use in 55-W high fidelity audio amplifier’s output stage. Maximum Ratings (Tc = 25°C) Characteristics Collector-base voltage Collector-emitter voltage Emitter-base voltage Collector current DC Pulse Base current Collector power dissipation (Tc = 25°C) Junction temperature Storage temperature range Symbol VCBO VCEO VEBO IC ICP IB PC Tj Tstg Rating 120 120 5 8 16 0.8 70 150 −55 to 150 Unit V V V A A W °C °C Electrical Characteristics (Tc = 25°C) Characteristics Symbol Test Condition Collector cut-off current Emitter cut-off current Collector-emitter breakdown voltage DC current gain Collector-emitter saturation [ ... ]

C4689 PDF Datasheet Download