BFG 19S
NPN Silicon RF Transistor For low noise, low distortion broadband amplifiers in antenna and telecommunication systems up to 1.5 GHz at collector currents from 10 mA to 70 mA
4
Junction temperature Ambient temperature Storage temperature
Thermal Resistance Junction - soldering point RthJS
1T is measured on the collector lead at the soldering point to the pcb S
3 2 1
VPS05163
ESD: Electrostatic discharge sensitive device, observe handling precaution!
Type BFG 19S
Maximum Ratings Parameter
Marking BFG19S 1=E
Pin Configuration 2=B 3=E 4=C
Package SOT-223
Symbol VCEO VCES VCBO VEBO IC IB 75 °C 1) Ptot Tj TA Tstg
Value 15 20 20 3 100 12 1 150 -65 ... 150 -65 ... 150
Unit V
Collector-emitter voltage Collector-emitter voltage Collector-base voltage Emitter-base voltage Collector current Base current Total power dissipation , TS
mA W °C
75
K/W
1
Oct-26-1999
BFG 19S
Electrical Characteristics at TA = 25°C, unless otherwise specified. Parameter DC characteristics Collector-emitter breakdown voltage IC = 1 mA, IB = 0 Collector-emitter cutoff current VCE = 20 V, VBE = 0 Collector-base cutoff current VCB = 10 V, IE = 0 Emitter-base cutoff current VEB = 2 V, IC = 0 DC current gain IC = 70 mA, VCE = 8 V hFE 40 100 220 IEBO 10 µA ICBO 100 nA ICES 100 µA V(BR)CEO 15 V Symbol min. Values typ. max. Unit
2
Oct-26-1999
BFG 19S
Electrical Characteristics at TA = 25°C, unless otherwise specified. Symbol Values Parameter min. AC characteristics (verified by random sampling) Transition frequency IC = 70 mA, VCE = 8 V, f = 500 MHz Collector-base capacitance VCB = 10 V, f = 1 MHz Collector-emitter capacitance VCE = 10 V, f = 1 MHz Emitter-base capacitance VEB = 0.5 V, f = 1 MHz Noise figure IC = 20 mA, VCE = 8 V, ZS = ZSopt , f = 900 MHz f = 1.8 GHz Power gain, maximum available F) IC = 70 mA, VCE = 8 V, ZS = ZSopt, ZL = ZLopt , f = 900 MHz f = 1.8 GHz Transducer gain |S21e|2 , IP3 , 11 5 35 IC = 30 mA, VCE = 8 V, ZS = ZL = 50 f = 900 MHz f = 1.8 GHz Third order intercept point IC = 70 mA, VCE = 8 V, ZS = ZL= 50 f = 900 MHz 13.5 8 Gma F 2.5 4 Ceb 4.6 Cce 0.4 Ccb 0.85 1.4 fT 4 5.5 typ. max.
Unit
GHz pF
dB
1G ma
= |S21 / S12 | (k-(k2-1)1/2)
dBm
3
Oct-26-1999
BFG 19S
Total power dissipation Ptot = f (TA *, TS )
* Package mounted on epoxy
1200
mW
1000 900
TS
P tot
800 700 600 500 400 300 200 100 0 0 20 40 60 80 100 120 °C 150
TA
TA,TS
Permissible Pulse Load RthJS = f (tp )
Permissible Pulse Load Ptotmax/P totDC = f (tp)
10 2
10 2
K/W
Ptotmax / PtotDC
-
10 1
10 1
0.5 0.2 0.1 0.05 0.02 0.01 0.005 D=0
D=0 0.005 0.01 0.02 0.05 0.1 0.2 0.5
RthJS
10 0 -7 10
10
-6
10
-5
10
-4
10
-3
10
-2
s
10
0
10 0 -7 10
10
-6
10
-5
10
-4
10
-3
10
-2
s
10
0
tp
tp
4
Oct-26-1999
BFG 19S
Collector-base capacitance Ccb = f (VCB ) f = 1MHz
Transition frequency f T = f (I C)
V CE = Parameter
2.6
pF
6.0
GHz 5V 3V 2V
2.2 2.0 1.8 5.0 4.5
C cb
1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0 4 8 12 16
V
fT
4.0 3.5 3.0 2.5 2.0 1.5 1.0 0
mA 0.7V 1V
22
20
40
60
80
120
VCB
IC
Power Gain Gma , Gms = f(IC )
f = 0.9GHz VCE = Parameter
14
10V 5V dB 3V 2V
Power Gain Gma, Gms = f(I C)
f = 1.8GHz VCE = Parameter
10
dB
10V 5V 3V
10
6
2V
G
8
1V
G
4
1V
6
2
4
0.7V
0
0.7V
2 0
20
40
60
80
mA
120
-2 0
20
40
60
80
mA
120
IC
IC
5
Oct-26-1999
BFG 19S
Power Gain Gma , Gms = f(VCE):_____
|S21|2 = f(VCE):--------f = Parameter
14
Intermodulation Intercept Point IP3=f(IC)
(3rd order, Output, ZS=ZL=50 ) VCE = Parameter, f = 900MHz
IC=70mA
dB
0.9GHz
40
dBm 0.9GHz
10
G
1.8GHz
IP 3
30
3V
8 25 6
1.8GHz 2V
20 4
1V
2
15
0 0
2
4
6
8
V
12
10 0
20
40
60
VCE
Power Gain Gma , Gms = f(f)
VCE = Parameter
36
dB
Power Gain |S21|2= f(f)
V CE = Parameter
32
IC=70mA
dB
IC =70mA
28
24 20
G
S21
24 20
16 12
16 8 12 8
10V
4
10V
0 -4 -8 0.0
4 0 0.0
0.5
1.0
1.5
2.0
2.5
2V 1V 0.7V GHz 3.5
0.5
1.0
1.5
2.0
f
6
8V 5V
80
mA
120
IC
2V 1V 0.7V
2.5
GHz
3.5
f
Oct-26-1999
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