2 / 7 page

Dated : 07/12/2002
®
SEMTECH ELECTRONICS LTD.
(Subsidiary of Sino-Tech International Holdings Limited, a company
listed on the Hong Kong Stock Exchange, Stock Code: 724)
ST 2SC1923
Characteristics at Tamb=25
OC
Symbol
Min.
Typ.
Max.
Unit
DC Current Gain
at VCE=6V, IC=1mA
Current Gain Group R
O
Y
hFE
hFE
hFE
40
70
100
-
-
-
80
140
200
-
-
-
Collector Cutoff Current
at VCB=18V
ICBO
-
-
0.5
μA
Emitter Cutoff Current
at VEB=4V
IEBO
-
-
0.5
μA
Reverse Transfer Capacitance
at VCE=6V, f=1MHz
Cre
-
0.70
-
pF
Gain Bandwidth Product
at VCE=6V, IC=1mA
fT
-
550
-
MHz
Collector-Base Time Constant
at VCE=6V, IE=-1mA, f=30MHz
Cr.rbb’
-
-
30
ps
Noise Figure
at VCE=6V, IE=-1mA, f=100MHz
NF
-
2.5
4
dB
Power Gain
at VCE=6V, IE=-1mA, f=100MHz
Gpe
15
18
-
dB