Vishay Telefunken BF996S Datasheet
Vishay Telefunken
N–Channel Dual Gate MOS-Fieldeffect Tetrode,
Depletion Mode
Electrostatic sensitive device.
Observe precautions for handling.
Applications
Input- and mixer stages in UHF tuners.
Features
D
Integrated gate protection diodes
D
Low noise figure
D
Low feedback capacitance
D
High cross modulation performance
D
Low input capacitance
D
High AGC-range
BF996S
21
94 9279
13 579
G
2
G
1
43
BF996S Marking: MH
Plastic case (SOT 143)
1=Source, 2=Drain, 3=Gate 2, 4=Gate 1
12623
Absolute Maximum Ratings
T
= 25_C, unless otherwise specified
amb
Parameter Test Conditions Type Symbol Value Unit
Drain - source voltage V
Drain current I
Gate 1/Gate 2 - source peak current ±I
Total power dissipation T
Channel temperature T
Storage temperature range T
≤ 60 °C P
amb
DS
D
G1/G2SM
tot
Ch
stg
D
20 V
30 mA
10 mA
200 mW
150
–65 to +150
S
°
C
°
C
Maximum Thermal Resistance
T
= 25_C, unless otherwise specified
amb
Parameter Test Conditions Symbol Value Unit
Channel ambient on glass fibre printed board (25 x 20 x 1.5) mm
plated with 35mm Cu
Document Number 85010
Rev. 3, 20-Jan-99
3
R
thChA
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450 K/W
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BF996S
DS G1S G2S
g
g
Vishay Telefunken
Electrical DC Characteristics
T
= 25_C, unless otherwise specified
amb
Parameter Test Conditions Type Symbol Min Typ Max Unit
Drain - source
breakdown voltage
Gate 1 - source
breakdown voltage
Gate 2 - source
breakdown voltage
Gate 1 - source
leakage current
Gate 2 - source
leakage current
Drain current VDS = 15 V, V
Gate 1 - source
cut-off voltage
Gate 2 - source
cut-off voltage
ID = 10 mA, –V
±I
= 10 mA, V
G1S
±I
= 10 mA, V
G2S
±V
= 5 V, V
G1S
±V
= 5 V, V
G2S
VDS = 15 V, V
VDS = 15 V, V
= –V
G1S
G2S
G1S
= VDS = 0 ±I
G2S
= VDS = 0 ±I
G1S
= 0, V
G1S
= 4 V V
G2S
= VDS = 0 ±V
= VDS = 0 ±V
= 4 V BF996S I
G2S
BF996SA I
BF996SB I
= 4 V, ID = 20 mA –V
G2S
= 0, ID = 20 mA –V
G1S
(BR)DS
(BR)G1SS
(BR)G2SS
G1SS
G2SS
DSS
DSS
DSS
G1S(OFF)
G2S(OFF)
20 V
8 14 V
8 14 V
4 18 mA
4 10.5 mA
9.5 18 mA
50 nA
50 nA
2.5 V
2.0 V
Electrical AC Characteristics
VDS = 15 V, ID = 10 mA, V
Parameter Test Conditions Symbol Min Typ Max Unit
Forward transadmittance y
Gate 1 input capacitance C
Gate 2 input capacitance V
Feedback capacitance C
Output capacitance C
Power gain GS = 2 mS, GL = 0.5 mS, f = 200 MHz G
AGC range V
Noise figure GS = 2 mS, GL = 0.5 mS, f = 200 MHz F 1.0 dB
= 4 V, f = 1 MHz , T
G2S
G1S
= 0, V
= 4 V C
G2S
GS = 3.3 mS, GL = 1 mS, f = 800 MHz G
= 4 to –2 V, f = 800 MHz
G2S
= 25_C, unless otherwise specified
amb
15 18.5 mS
21s
issg1
issg2
rss
oss
ps
ps
D
G
ps
2.2 2.6 pF
1.1 pF
25 35 fF
10.8 1.2 pF
25 dB
18 dB
40 dB
GS = 3.3 mS, GL = 1 mS, f = 800 MHz F 1.8 dB
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Document Number 85010
Rev. 3, 20-Jan-99
Common Source S–Parameters
BF996S
Vishay Telefunken
VDS , = 15 V , V
ID/mA f/MHz
5 700 –1.62 –52.3 0.43 85.0 –47.02 58.9 –0.91 –19.7
10 700 –1.75 –55.1 2.39 88.7 –46.53 56.7 –0.96 –20.0
15 700 –1.86 –57.2 3.22 89.6 –46.13 54.9 –1.02 –20.4
= 4 V , Z0 = 50 W,T
G2S
S11 S21 S12 S22
LOG
MAG
dB deg dB deg dB deg dB deg
100 –0.05 –8.5 3.24 164.9 –56.84 82.2 –0.08 –3.4
200 –0.15 –17.7 3.63 150.9 –50.57 75.6 –0.18 –7.1
300 –0.43 –24.6 2.51 134.7 –48.51 67.7 –0.29 –9.7
400 –0.70 –32.1 2.01 121.3 –46.98 62.8 –0.44 –12.3
500 –1.03 –39.2 1.45 108.4 –46.40 57.8 –0.59 –15.1
600 –1.33 –45.8 0.94 96.5 –46.40 57.3 –0.76 –17.4
800 –1.92 –58.7 –0.10 74.1 –47.53 63.3 –1.08 –22.0
900 –2.21 –64.7 –0.59 63.6 –47.81 73.1 –1.26 –24.3
1000 –2.49 –70.7 –1.12 53.1 –48.52 83.5 –1.45 –26.2
1100 –2.80 –76.6 –1.52 43.7 –48.53 102.1 –1.57 –28.4
1200 –3.07 –82.5 –1.93 33.6 –46.95 120.4 –1.75 –30.5
1300 –3.31 –88.6 –2.35 24.1 –44.44 131.7 –1.92 –32.7
100 –0.05 –9.0 5.19 165.3 –56.24 81.9 –0.11 –3.5
200 –0.16 –18.7 5.58 151.8 –49.97 75.0 –0.21 –7.2
300 –0.48 –26.0 4.45 136.3 –47.91 67.2 –0.33 –9.8
400 –0.76 –33.7 3.95 123.3 –46.48 61.8 –0.47 –12.6
500 –1.11 –41.2 3.40 110.9 –45.91 56.3 –0.65 –15.3
600 –1.43 –48.3 2.88 99.5 –45.91 55.8 –0.81 –17.8
800 –2.07 –61.6 1.88 78.1 –47.13 60.7 –1.12 –22.4
900 –2.40 –67.9 1.39 67.9 –47.41 69.9 –1.32 –24.6
1000 –2.70 –74.2 0.90 57.9 –48.21 80.0 –1.49 –26.6
1100 –3.03 –80.2 0.50 48.7 –48.43 98.9 –1.61 –28.8
1200 –3.32 –86.4 0.13 38.9 –47.04 118.2 –1.79 –31.0
1300 –3.59 –92.3 –0.28 29.6 –44.54 130.5 –1.96 –33.3
100 –0.05 –9.4 6.07 165.4 –55.74 81.4 –0.15 –3.6
200 –0.17 –19.4 6.44 152.0 –49.47 74.6 –0.24 –7.3
300 –0.50 –27.1 5.31 136.7 –47.41 66.4 –0.36 –10.0
400 –0.81 –35.0 4.80 123.8 –45.98 60.8 –0.52 –12.9
500 –1.18 –42.9 4.23 111.5 –45.41 55.1 –0.68 –15.7
600 –1.52 –50.3 3.72 100.3 –45.41 54.4 –0.84 –18.0
800 –2.20 –63.9 2.72 79.4 –46.63 58.5 –1.16 –22.7
900 –2.53 –70.4 2.24 69.2 –47.00 67.3 –1.35 –25.0
1000 –2.86 –76.8 1.74 59.4 –47.91 76.7 –1.53 –27.1
1100 –3.21 –82.9 1.34 50.2 –48.33 95.2 –1.66 –29.4
1200 –3.50 –89.0 0.95 40.8 –47.04 115.3 –1.84 –31.6
1300 –3.80 –95.1 0.56 31.5 –44.53 128.7 –2.00 –33.9
= 25_C, unless otherwise specified
amb
ANG
LOG
MAG
ANG
LOG
MAG
ANG
LOG
MAG
ANG
Document Number 85010
Rev. 3, 20-Jan-99
www.vishay.de • FaxBack +1-408-970-5600
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