This part is a kind of semiconductor called BC107.

Function of this product has GENERAL PURPOSE SMALL SIGNAL NPN BIPOLAR TRANSISTOR.

Manufacturers : Seme LAB

Image and pinout :

Some of the text within the PDF file :

BC107 BC108 BC109 MECHANICAL DATA Dimensions in mm (inches) 5.84 (0.230) 5.31 (0.209) 4.95 (0.195) 4.52 (0.178) GENERAL PURPOSE SMALL SIGNAL NPN BIPOLAR TRANSISTOR 5.33 (0.210) 4.32 (0.170) 12.7 (0.500) min. 0.48 (0.019) 0.41 (0.016) dia. FEATURES • SILICON NPN • HERMETICALLY SEALED TO18 • SCREENING OPTIONS AVAILABLE 2.54 (0.100) Nom. 3 2 1 TO–18 METAL PACKAGE Underside View PIN 1 – Emitter PIN 2 – Base PIN 3 – Collector ABSOLUTE MAXIMUM RATINGS (TA = 25°C unless otherwise stated) VCBO VCEO VCES Collector – Base Continuous Voltage BC017 BC108, BC109 Collector – Emitter Continuous Voltage With Zero Base Current BC107 BC108, BC109 Collector – Emitter Continuous Voltage With Base Shortcircuited to Emitter BC107 BC108, BC109 VEBO IC ICM Ptot Tamb Tstg Emitter – B [ ... ]

BC107 PDF Datasheet Download