This part is a kind of semiconductor called C2611.

Function of this product has Plastic-Encapsulated Transistors.

Manufacturers : TRANSYS Electronics

Image and pinout :

Some of the text within the PDF file :

Transys Electronics L I M I T E D TO-251 Plastic-Encapsulated Transistors C 2611 FEATURES Power dissipation PCM: 1 W (Tamb=25℃) 1. EMITTER 2. COLLECTOR 3. BASE TRANSISTOR (NPN) TO-251 Collector current ICM: 0.2 A Collector-base voltage V(BR)CBO: 600 V Operating and storage junction temperature range TJ, Tstg: -55℃ to +150℃ ELECTRICAL CHARACTERISTICS (Tamb=25℃ Parameter Collector-base breakdown voltage Collector-emitter breakdown voltage Emitter-base breakdown voltage Collector cut-off current Collector cut-off current Emitter cut-off current Symbol V(BR)CBO V(BR)CEO V(BR)EBO ICBO ICEO IEBO hFE(1) DC current gain hFE(2) Collector-emitter saturation voltage Base-emitter saturation voltage VCE(sat) VBE(sat) 1 2 3 unless otherwise specified) Test conditions [ ... ]

C2611 PDF Datasheet Download