The transistor is a 3 terminal & 2 junction semiconductor device which is used for switching or amplifying purposes.

Features of BC109 NPN General Purpose Transistor:

• Collector-Emitter Volt (Vceo): 20V.
• Collector-Base Volt (Vcbo): 30V.
• Collector Current (Ic): 0.2A.
• hfe: 110-800 @ 2mA.
• Power Dissipation (Ptot): 300mW.
• Current-Gain-Bandwidth (ftotal): 100MHz.
• Type: NPN.

Applications of BC109 NPN General Purpose Transistor:

• It is used in switching device.
• It is used in amplifying device.
• It is used in DIY kits.
• It is used in Electronic projects.