This part is a kind of semiconductor called 2SB1218A.

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 SOT-323 Plastic-Encapsulated Transistors SOT-323 2SB1218A FEATURES Power dissipation PCM: TRANSISTOR (PNP) 1. BASE 2. EMITTER 3. COLLECTOR 1. 25¡ À0. 05 1. 01 R EF w. 150 mW (Tamb=25℃) 2. 30¡ À0. 05 Collector current -100 mA ICM: Collector-base voltage -45 V V(BR)CBO: Operating and storage junction temperature range TJ, Tstg: -55℃ to +150℃ 1. 30¡ À0. 03 Unit: mm ELECTRICAL CHARACTERISTICS (Tamb=25℃ Parameter Collector-base breakdown voltage Collector-emitter breakdown voltage Emitter-base breakdown voltage Collector cut-off current Emitter cut-off current DC current gain Collector-emitter saturation voltage Transition frequency Collector output capacitance Symbol V(BR)CBO V(BR)CEO V(BR)EBO ICBO IEBO hFE(1) VCE(sat) [ ... ]

2SB1218A PDF Datasheet Download