BF994 查看數據表（PDF） - Vishay Semiconductors
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BF994 Datasheet PDF : 7 Pages
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BF994S
Vishay Telefunken
Typical Characteristics (Tamb = 25_C unless otherwise specified)
300
250
200
150
100
50
0
0 20 40 60 80 100 120 140 160
96 12159
Tamb – Ambient Temperature ( °C )
Figure 1. Total Power Dissipation vs.
Ambient Temperature
32
28
VG2S= 4V
Ptot=200mW
24
2V
1.5V
1V
20
0.5V
16
0
12
8
–0.5V
4
VG1S= –1V
0
0 2 4 6 8 10 12 14 16
12849
VDS – Drain Source Voltage ( V )
Figure 2. Drain Current vs. Drain Source Voltage
22
20
18
VDS= 15V
6V 5V 4V 3V
2V
16
1V
14
12
10
0.5V
8
6
0
4
2
VG2S= –1V
0
–1 –0.5 0.0 0.5 1.0 1.5
12851
VG1S – Gate 1 Source Voltage ( V )
Figure 3. Drain Current vs. Gate 1 Source Voltage
22
20
18
VDS= 15V
16
14
5V 4V
3V
2V
1V
12
10
8
0
6
4
2
VG1S= –1V
0
–1 –0.5 0.0 0.5 1.0 1.5
12852
VG2S – Gate 2 Source Voltage ( V )
Figure 4. Drain Current vs. Gate 2 Source Voltage
4.0
3.5
VDS=15V
VG2S=4V
3.0
f=1MHz
2.5
2.0
1.5
1.0
0.5
0
–1 –0.5 0.0 0.5 1.0 1.5
12853
ID – Drain Current ( mA )
Figure 5. Gate 1 Input Capacitance vs. Drain Current
3.0
VDS=15V
2.5
VG1S=0
f=1MHz
2.0
1.5
1.0
0.5
0
–2 –1 0 1 2 3 4 5
12854
VG2S – Gate 2 Source Voltage ( V )
Figure 6. Gate 2 Input Capacitance vs.
Gate 2 Source Voltage
Document Number 85008
Rev. 3, 20-Jan-99
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