This part is a kind of semiconductor called 2SA1943A.

Function of this product has PNP Epitaxial Silicon Transistor.

Manufacturers : JILIN SINO

Image and pinout :

Some of the text within the PDF file :

PNP 硅外延晶体管 Silicon PNP Epitaxial Transistor R 2SA1943A 用途  应用于功率放大器 产品特性 高集电极电压：VCEO=-230V (min) 与 2SC5200A 互补 推荐用于 100W 高保真音响频率放大器输出电路 环保（RoHS）产品 封装 Package TO-3PL（T） APPLICATIONS  Power Amplifier Applications FEATURES High collector voltage：VCEO=-230V (min) Complementary to 2SC5200A Recommended for 100-W high-fidelity audio frequency amplifier output RoHS product TO-247 1 基极 BASE 2 集电极（热沉）COLLECTOR (HEAT SINK) 3 发射极 EMITTER 订货信息 ORDER MESSAGE 订货型号 印记 Order codes Marking 2SA1943A-O-AL-N-D TTA1943 2SA1943A -O-AL-N-B TTA1943 2SA1943A –O-W –N-B TTA1943 无卤素 Halogen Free 否 NO 否 N [ ... ]

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