This part is a kind of semiconductor called BC559C.

Function of this product has Si-Epitaxial PlanarTransistors.

Manufacturers : Diotec Semiconductor

Image and pinout :

Some of the text within the PDF file :

BC 556 ... BC 559 PNP Si-Epitaxial PlanarTransistors General Purpose Transistors PNP 500 mW TO-92 (10D3) 0.18 g Power dissipation – Verlustleistung Plastic case Kunststoffgehäuse Weight approx. – Gewicht ca. Plastic material has UL classification 94V-0 Gehäusematerial UL94V-0 klassifiziert Standard Pinning 1=C 2=B 3=E Standard packaging taped in ammo pack Standard Lieferform gegurtet in Ammo-Pack Maximum ratings (TA = 25/C) BC 556 Collector-Emitter-voltage Collector-Base-voltage Emitter-Base-voltage Power dissipation – Verlustleistung Collector current – Kollektorstrom (DC) Junction temp. – Sperrschichttemperatur Storage temperature – Lagerungstemperatur B open E open C open - VCE0 - VCB0 - VEB0 Ptot - IC Tj TS 65 V 80 V Grenzwerte (TA = 25/C) BC 557 45 V 50 V 5V 500 mW [ ... ]

BC559C PDF Datasheet Download