This part is a kind of semiconductor called TTA1943.

Function of this product has Transistor Silicon PNP Epitaxial Type.

Manufacturers : Toshiba

Image and pinout :

Some of the text within the PDF file :

TTA1943 TOSHIBA Transistor Silicon PNP Epitaxial Type TTA1943 Power Amplifier Applications • • • High collector voltage: VCEO = -230 V (min) Complementary to TTC5200 Recommended for 100-W high-fidelity audio frequency amplifier output stage. Unit: mm Absolute Maximum Ratings (Ta = 25°C) Characteristics Collector-base voltage Collector-emitter voltage Emitter-base voltage Collector current Base current Collector power dissipation (Tc=25°C) Junction temperature Storage temperature range Symbol VCBO VCEO VEBO IC IB PC Tj Tstg Rating -230 -230 -5 -15 -1.5 150 150 −55 to 150 Unit V V V A A W °C °C 1.BASE 2.COLLECTOR(HEAT SINK) 3.EMITTER JEDEC JEITA TOSHIBA ― ― 2-21F1A Weight : 9.75 g (typ) Note1 : Using continuously under heavy loads (e.g. the application of high temperatu [ ... ]

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