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PDF BF995B Data sheet ( Hoja de datos )
| Número de pieza | BF995B | |
| Descripción | N-Channel Dual Gate MOS-Fieldeffect Tetrode/ Depletion Mode | |
| Fabricantes | Vishay Telefunken | |
| Logotipo |  |
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BF995
Vishay Telefunken
N–Channel Dual Gate MOS-Fieldeffect Tetrode,
Depletion Mode
Electrostatic sensitive device.
Observe precautions for handling.
Applications
Input- and mixer stages especially for FM- and VHF TV-tuners up to 300 MHz.
Features
D Integrated gate protection diodes
D High cross modulation performance
D Low noise figure
D High AGC-range
D Low feedback capacitance
21
G2 D
94 9279
13 579
34
BF995 Marking: MB
Plastic case (SOT 143)
1=Source, 2=Drain, 3=Gate 2, 4=Gate 1
G1
12623
S
Absolute Maximum Ratings
Tamb = 25_C, unless otherwise specified
Parameter
Test Conditions
Drain - source voltage
Drain current
Gate 1/Gate 2 - source peak current
Total power dissipation
Channel temperature
Tamb ≤ 60 °C
Storage temperature range
Type
Symbol
VDS
ID
±IG1/G2SM
Ptot
TCh
Tstg
Value
20
30
10
200
150
–55 to +150
Unit
V
mA
mA
mW
°C
°C
Maximum Thermal Resistance
Tamb = 25_C, unless otherwise specified
Parameter
Test Conditions
Channel ambient on glass fibre printed board (25 x 20 x 1.5) mm3
plated with 35mm Cu
Symbol
RthChA
Value
450
Unit
K/W
Document Number 85009
Rev. 3, 20-Jan-99
www.vishay.de • FaxBack +1-408-970-5600
1 (7)
1 page  
WVDS = 15 V, ID = 5 to 20 mA, VG2S = 4 V , Z0 = 50
BF995
Vishay Telefunken
S11
j0.5
j
j2
j0.2 j5
0
ÁÁÁÁ0.2 ÁÁÁÁ0.5 ÁÁ1ÁÁÁÁ2ÁÁÁÁ5ÁÁ100
1
50
–j0.2
700 MHz
300
500
–j5
–j0.5
–j2
12 920
–j
S21
Figure 11. Input reflection coefficient
90°
120°
60°
400
200
30°
50
180°
700MHz
0.8
1.6 0°
–150°
ID= 20mA
10mA
5––m3300A°°
12 922
–120°
–60°
–90°
Figure 12. Forward transmission coefficient
S12
90°
120°
60°
150°
180° 700MHz
600
30°
300
0.04 0.08 0°
–150°
–30°
12 921
–120°
–60°
–90°
Figure 13. Reverse transmission coefficient
S22
j
j0.5 j2
j0.2 j5
ÁÁÁÁÁÁÁÁÁÁ0 0.2 0.5 1 2 5
1
100
300
–j0.2
500 –j5
700 MHz
–j0.5
–j2
12 923
–j
Figure 14. Output reflection coefficient
Document Number 85009
Rev. 3, 20-Jan-99
www.vishay.de • FaxBack +1-408-970-5600
5 (7)
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet BF995B.PDF ] | |
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