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 BF 1009S
Silicon N-Channel MOSFET Tetrode For low noise, high gain controlled input stages up to 1GHz Operating voltage 9V Integrated bias network
Drain AGC HF Input G2 G1 HF Output + DC
3 4 2 1
VPS05178
Storage temperature Channel temperature
Thermal Resistance Channel - soldering point Rthchs
Note: It is not recommended to apply external DC-voltage on Gate 1 in active mode.

GND
EHA07215
ESD: Electrostatic discharge sensitive device, observe handling precaution!
Type BF 1009S
Maximum Ratings Parameter Drain-source voltage
Marking JLs 1=S
Pin Configuration 2=D 3 = G2 4 = G1
Package SOT-143
Unit V mA V mW C
Symbol VDS ID IG1/2SM +VG1SE 76 C Ptot Tstg Tch
Value 12 25 10 3 200 -55 ... 150 150
Continuos drain current Gate 1/gate 2 peak source current Gate 1 (external biasing) Total power dissipation, TS
370
K/W
1
May-05-1999
BF 1009S
Electrical Characteristics at T A = 25C, unless otherwise specified. Symbol Values Parameter min. DC characteristics Drain-source breakdown voltage I D = 300 A, V G1S = 0 V, V G2S = 0 V Gate 1 - source breakdown voltage +I G1S = 10 mA, VG2S = 0 V, V DS = 0 V Gate 2 source breakdown voltage I G2S = 10 mA, VG1S = 0 V, V DS = 0 V Gate 1 source current VG1S = 6 V, V G2S = 0 V Gate 2 source leakage current V G2S = 8 V, VG1S = 0 V, V DS = 0 V Drain current VDS = 9 V, V G1S = 0 , V G2S = 6 V Operating current (selfbiased) VDS = 9 V, V G2S = 6 V Gate 2-source pinch-off voltage VDS = 9 V, ID = 100 A VG2S(p) 0.9 I DSS I DSO 10 14 500 19 I G2SS 50 +I G1SS 60 V (BR)G2SS 10 16 +V (BR)G1SS 8 12 V(BR)DS 16 typ. max.
Unit
V
A nA A mA V
AC characteristics Forward transconductance (self biased) VDS = 9 V, VG2S = 6 V Gate 1-input capacitance (self biased) VDS = 9 V, VG2S = 6 V, f = 1 MHz Output capacitance (self biased) VDS = 9 V, VG2S = 6 V, f = 1 MHz Power gain (self biased) VDS = 9 V, VG2S = 6 V, f = 800 MHz Noise figure (self biased) VDS = 9 V, VG2S = 6 V, f = 800 MHz VDS = 9 V, VG2S = 6 ... 0V, f = 800 MHz
2
gfs Cg1ss Cdss Gps F800 Gps
26 18 40
30 2.1 0.9 22 1.4 50
2.7 -
mS pF
dB
Gain control range (self biased)
May-05-1999
BF 1009S
Total power dissipation Ptot = f (TS )
Drain current ID = f (VG2S)
300
15 mA
mW
12 11
P tot
200
10
ID
150 100 50 0 0 120 C
9 8 7 6 5 4 3 2 1
20
40
60
80
100
150
0 0.0
1.0
2.0
3.0
4.0
V
6.0
TS
VG2S
Insertion power gain | S21 | 2 = f (VG2S )
10
dB
Forward transfer admittance | Y 21 | = f (V G2S)
28
mS
0 -5
24 22 20
| S21 |2
-10 -15 -20 -25 -30 -35 -40 -45 -50 -55 -60 0.0 1.0 2.0 3.0 4.0
V
|Y21|
18 16 14 12 10 8 6 4 2
6.0
0 0.0
1.0
2.0
3.0
4.0
V
6.0
VG2S
VG2S
3
May-05-1999
BF 1009S
Gate 1 input capacitance Cg1ss = f (Vg2s) f = 200MHz
Output capacitance C dss = f (V G2S) f = 200MHz
3.0 pF
3.0 pF
2.4 2.2
2.4 2.2
Cg1ss
2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0.0 1.0 2.0 3.0 4.0
V
Cdss
2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2
6.0
0.0 0.0
1.0
2.0
3.0
4.0
V
6.0
VG2S
VG2S
4
May-05-1999


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