1998. 10. 8 2/3
BC556/7/8
Revision No : 3
ELECTRICAL CHARACTERISTICS (Ta=25 )
NOTE : According to the value of hFE the BC546, BC547, BC548 are classified as follows.
CLASSIFICATION none A B C
hFE
BC556 110 450 110 220 200 450 -
BC557 110 800 110 220 200 450 420 800
BC558 110 800 110 220 200 450 420 800
CHARACTERISTIC SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
Collector Cut-off Current ICBO VCB=-30V, IE=0 - - -15 nA
DC Current Gain (Note)
BC556
hFE VCE=-5V, IC=-2mA
110 - 450
BC557 110 - 800
BC558 110 - 800
Collector-Emitter
Saturation Voltage
BC556
VCE(sat) IC=-100mA, IB=-5mA
- - -0.65
VBC557 - - -0.65
BC558 - - -0.65
Base-Emitter
Saturation Voltage
BC556
VBE(sat) IC=-100mA, IC=-5mA
--0.9 -1.1
VBC557 --0.9 -1.1
BC558 --0.9 -1.1
Base-Emitter Voltage
VBE(ON) 1 VCE=-5V, IC=-2mA -0.6 --0.75 V
VBE(ON) 2 VCE=-5V, IC=-10mA - - -0.8 V
Transition Frequency fTVCE=-5V, IC=-10mA, f=100MHz - 150 - MHz
Collector Output Capacitance Cob VCB=-10V, f=1MHz, IE=0 - 4.5 - pF
Noise Figure
BC556
NF
VCE=-6V, IC=-0.1mA
Rg=10k , f=1kHz
- 1.0 10
dB
BC557 - 1.0 10
BC558 - 1.0 10