Low frequency, general purpose small signal transistors widely used in audio, switching and television circuits. The BC547-9 series and BC557-9 series are functionally identical to the common BC107-9 series.
All have a maximum power dissipation of 500mW. They have essentially similar specifications and can generally be substituted for one another (within the PNP and NPN groups of three each). All devices are housed in standard TO-92 plastic packages.
NPN BC547 BC548 BC549
VCBO 50v 30v 30v
Vcto 45v 30v 30v
lc 100mA 100mA 100mA
Ptotl 500mW 500mW 500mW
hFE min-max at I0 2mA 110 - 800 110 - 800 200 - 800
fT typical 300MHz 300MHz 300MHz
VCEsat (max) at lc 100mA/lB 5mA 600mV 600mV 600mV
PNP BC557 BC558 BC559
VCBO 50v 30v 30v
VCEO 45v 30v 30v
lc 100mA 100mA 100mA
P,ot 500mW 500mW 500mW
hFE min-max at lc 2mA 75 - 475 75 - 475 125 - 475
fT typical 150MHz 150MHz 150MHz
VCEsat (max) at lc 100mA/lB 5mA 600mV 600mV 600mV
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