BCX 78
BCX 79
Electrical Characteristics
at TA = 25 ˚C, unless otherwise specified.
Parameter
AC characteristics
Transition frequency
IC = 20 mA, VCE = 5 V, f = 100 MHz
Output capacitance
VCB = 10 V, f = 1 MHz
Input capacitance
VEB = 0.5 V, f = 1 MHz
Short-circuit input impedance
IC = 2 mA, VCE = 5 V, f = 1 kHz
BCX 78 VII, BCX 79 VII
BCX 78 VIII, BCX 79 VIII
BCX 78 IX, BCX 79 IX
BCX 78 X, BCX 79 X
Open-circuit reverse voltage transfer ratio
IC = 2 mA, VCE = 5 V, f = 1 kHz
BCX 78 VII, BCX 79 VII
BCX 78 VIII, BCX 79 VIII
BCX 78 IX, BCX 79 IX
BCX 78 X, BCX 79 X
Short-circuit forward current transfer ratio
IC = 2 mA, VCE = 5 V, f = 1 kHz
BCX 78 VII, BCX 79 VII
BCX 78 VIII, BCX 79 VIII
BCX 78 IX, BCX 79 IX
BCX 78 X, BCX 79 X
Open-circuit output admittance
IC = 2 mA, VCE = 5 V, f = 1 kHz
BCX 78 VII, BCX 79 VII
BCX 78 VIII, BCX 79 VIII
BCX 78 IX, BCX 79 IX
BCX 78 X, BCX 79 X
Noise figure
IC = 0.2 mA, VCE = 5 V, RS = 2 kΩ
f = 1 kHz, ∆f = 200 Hz
Symbol
Values
Unit
min. typ. max.
fT
–
Cobo
–
Cibo
–
h11e
–
–
–
–
h12e
–
–
–
–
h21e
–
–
–
–
h22e
–
–
–
–
F
–
250 –
3
–
10 –
2.7 –
3.6 –
4.5 –
7.5 –
1.5 –
2
–
2
–
3
–
200 –
260 –
330 –
520 –
18 –
24 –
30 –
50 –
2
–
MHz
pF
kΩ
10– 4
–
µS
dB
Semiconductor Group
5