This part is a kind of semiconductor called BD233.

Function of this product has NPN Transistor.

Manufacturers : TRANSYS

Image and pinout :

Some of the text within the PDF file :

Transys Electronics LIMITED TO-126 Plastic-Encapsulated Transistors BD233/235/237 TRANSISTOR (NPN) FEATURES TO-126 Power dissipation 1. EMITTER PCM: 1.25 W (Tamb=25℃) 2. COLLECTOR Collector current ICM: 2 A Collector-base voltage V(BR)CBO: BD233 : 45 V BD235: 60 V BD237: 100 V Operating and storage junction temperature range TJ : 150℃ Tstg: -65℃ to +150℃ 3. BASE 123 ELECTRICAL CHARACTERISTICS (Tamb=25℃ unless otherwise specified) Parameter Symbol Test conditions MIN MAX Collector-base breakdown voltage Collector-emitter breakdown voltage BD233 BD235 BD237 BD233 BD235 BD237 V(BR)CBO V(BR)CEO Ic= 100µA, IE=0 Ic= 10mA, IB=0 45 60 100 45 60 80 Emitter-base breakdown voltage V(BR)EBO IE= 100µA, IC=0 5 Collector cut-off current BD233 BD235 BD237 ICBO VCB= 45 [ ... ]

BD233 PDF Datasheet Download