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BF244B Fiches technique(PDF) 2 Page - Fairchild Semiconductor

No de pièce BF244B
Description  N-Channel RF Amplifier
Download  6 Pages
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Fabricant  FAIRCHILD [Fairchild Semiconductor]
Site Internet  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

BF244B Fiches technique(HTML) 2 Page - Fairchild Semiconductor

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5
Electrical Characteristics
TA = 25°C unless otherwise noted
OFF CHARACTERISTICS
Symbol
Parameter
Test Conditions
Min
Typ
Max Units
ON CHARACTERISTICS
IDSS
Zero-Gate Voltage Drain Current
VDS = 15 V, VGS = 0
244A
244B
244C
2.0
6.0
12
6.5
15
25
mA
mA
mA
SMALL SIGNAL CHARACTERISTICS
yfs
Forward Transfer Admittance
VDS = 15 V, VGS = 0, f = 1.0 kHz
VDS = 15 V, VGS = 0, f = 200 MHz
3.0
5.6
6.5
mmhos
mmhos
yos
Output Admittance
VDS = 15 V, VGS = 0, f = 1.0 kHz
40
µmhos
yrs
Reverse Transfer Admittance
VDS = 15 V, VGS = 0, f = 200 MHz
1.0
µmhos
Ciss
Input Capacitance
VDS = 20 V, VGS = - 1.0 V
3.0
pF
Crss
Reverse Transfer Capacitance
VDS = 20 V, VGS = - 1.0 V,
f = 1.0 MHz
0.7
pF
Coss
Output Capacitance
VDS = 20 V, VGS = - 1.0 V,
f = 1.0 MHz
0.9
pF
NF
Noise Figure
VDS = 15 V, VGS = 0, RG = 1.0 k
Ω,
f = 100 MHz
1.5
dB
F(Yfs)
Cut-Off Frequency
VDS = 15 V, VGS = 0
700
MHz
Typical Characteristics
V(BR)GSS
Gate-Source Breakdown Voltage
IG = 1.0
µA, VDS = 0
30
V
IGSS
Gate Reverse Current
VGS = - 20 V, VDS = 0
5.0
nA
VGSS(off)
Gate-Source Cutoff Voltage
VDS = 15 V, ID = 10 nA
- 0.5
- 8.0
V
VGS
Gate-Source Voltage
VDS = 15 V, ID = 200
µA
244A
244B
244C
- 0.4
- 1.6
- 3.2
- 2.2
- 3.8
- 7.5
V
V
V
Transfer Characteristics
-5
-4
-3
-2
-1
0
0
4
8
12
16
20
V - GATE-SOURCE VOLTAGE(V)
GS(OFF)
V
= -4.5V
V
= 15V
DS
T = +25 C
A
O
-2.5 V
T
= -55 C
O
A
T = +125 C
A
O
T
= -55 C
O
A
T = +25 C
A
O
T = +125 C
A
O
GS
Channel Resistance vs Temperature
-50
0
50
100
150
10
20
30
50
100
200
300
500
1000
T - AMBIENT TEMPERATURE ( C)
V
= -1.0V
GS(OFF)
-2.5 V
-5.0V
-8.0 V
V
= 100mV
DS
V
= 0 V
GS
A
N-Channel RF Amplifier
(continued)


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