Feb-25-2004
1
BF2040...
Silicon N-Channel MOSFET Tetrode
For low noise , high gain controlled
input stages up to 1GHz
Operating voltage 5 V
ESD
: Electrostatic discharge sensitive device, observe handling precaution!
Type
Package
Pin Configuration
Marking
BF2040
BF2040R
BF2040W
SOT143
SOT143
SOT343
1=S
1=D
1=D
2=D
2=S
2=S
3=G2
3=G1
3=G1
4=G1
4=G2
4=G2
-
-
-
-
-
-
NFs
NFs
NF
Maximum Ratings
Parameter
Symbol
Value
Unit
Drain-source voltage
V
DS
8
V
Continuous drain current
I
D
20
mA
Gate 1/ gate 2-source current
I
G1/2SM
10
Gate 1 (external biasing)
+V
G1SE
7
V
Total power dissipation
T
S
76 C, BF2040, BF2040R
T
S
94 C, BF2040W
P
tot
200
200
mW
Storage temperature
T
stg
-55 ... 150
C
Channel temperature
T
ch
150
Thermal Resistance
Parameter
Symbol
Value
Unit
Channel - soldering point
1)
BF2040, BF2040R
BF2040W
R
thchs
370
280
K/W
1For calculation of R
thJA
please refer to Application Note Thermal Resistance
Feb-25-2004
2
BF2040...
Electrical Characteristics
Parameter
Symbol
Values
Unit
min.
typ.
max.
DC Characteristics
Drain-source breakdown voltage
I
D
= 20 A, V
G1S
= 0 , V
G2S
= 0
V
(BR)DS
10
-
-
V
Gate1-source breakdown voltage
+I
G1S
= 10 mA, V
G2S
= 0 , V
DS
= 0
+V
(BR)G1SS
6
-
15
Gate2-source breakdown voltage
+I
G2S
= 10 mA, V
G1S
= 0 , V
DS
= 0
+V
(BR)G2SS
6
-
15
Gate1-source leakage current
V
G1S
= 5 V, V
G2S
= 0 , V
DS
= 0
+I
G1SS
-
-
50
nA
Gate2-source leakage current
V
G2S
= 5 V, V
G1S
= 0 , V
DS
= 0
+I
G2SS
-
-
50
Drain current
V
DS
= 5 V, V
G1S
= 0 , V
G2S
= 4 V
I
DSS
-
-
50
A
Drain-source current
V
DS
= 5 V, V
G2S
= 4 V, R
G1
= 100
k
I
DSX
-
15
-
mA
Gate1-source pinch-off voltage
V
DS
= 5 V, V
G2S
= 4 V, I
D
= 20 A
V
G1S(p)
0.3
0.6
-
V
Gate2-source pinch-off voltage
V
DS
= 5 V, I
D
= 20 A
V
G2S(p)
0.3
0.7
-
Feb-25-2004
3
BF2040...
Electrical Characteristics
Parameter
Symbol
Values
Unit
min.
typ.
max.
AC Characteristics - (verified by random sampling)
Forward transconductance
V
DS
= 5 V, I
D
= 15 mA, V
G2S
= 4 V
g
fs
37
42
-
mS
Gate1 input capacitance
V
DS
= 5 V, I
D
= 15 mA, V
G2S
= 4 V,
f = 1 MHz
C
g1ss
-
2.9
3.4
pF
Output capacitance
V
DS
= 5 V, I
D
= 15 mA, V
G2S
= 4 V,
f = 1 MHz
C
dss
-
1.6
-
Power gain
V
DS
= 5 V, I
D
= 15 mA, V
G2S
= 4 V,
f = 800 MHz
G
p
20
23
-
dB
Noise figure
V
DS
= 5 V, I
D
= 15 mA, V
G2S
= 4 V,
f = 800 MHz
F
-
1.6
2.2
dB
Gain control range
V
DS
= 5 V, V
G2S
= 4 ...0 V , f = 800 GHz
G
p
45
50
-
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