BF998A Datasheet PDF - Vishay Telefunken
| Part Number | BF998A | |
| Description | N-Channel Dual Gate MOS-Fieldeffect Tetrode/ Depletion Mode | |
| Manufacturers | Vishay Telefunken | |
| Logo |  |
|
|
There is a preview and BF998A download ( pdf file ) link at the bottom of this page. Total 9 Pages | ||
Preview 1 page No Preview Available !
BF998/BF998R/BF998RW
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
D High gain
21
12
94 9279
13 579
34
BF998 Marking: MO
Plastic case (SOT 143)
1 = Source, 2 = Drain, 3 = Gate 2, 4 = Gate 1
12
94 9278
43
95 10831
BF998R Marking: MOR
Plastic case (SOT 143R)
1 = Source, 2 = Drain, 3 = Gate 2, 4 = Gate 1
13 654
13 566
43
BF998RW Marking: WMO
Plastic case (SOT 343R)
1 = Source, 2 = Drain, 3 = Gate 2, 4 = Gate 1
Document Number 85011
Rev. 4, 23-Jun-99
www.vishay.de • FaxBack +1-408-970-5600
1 (9)
|
| |
 
10
f= 800MHz
0
–10
–20
–30
–40
4V
3V
2V
1V
0
–0.2V
–0.4V
VG2S=–0.8V
–50
–1
12818
–0.5 0.0 0.5 1.0 1.5
VG1S – Gate 1 Source Voltage ( V )
Figure 7. Transducer Gain vs. Gate 1 Source Voltage
32
VDS=8V
28 f=1MHz
24
VG2S=4V
3V
20
16
2V
12
12819
8
4
0
0
1V
0
4 8 12 16 20 24 28
ID – Drain Current ( mA )
Figure 8. Forward Transadmittance vs. Drain Current
20
18
16
14
12
10
8
6
4
2
0
0
12820
f=1300MHz
1000MHz
700MHz
400MHz
100MHz
VDS=8V
VG2S=4V
ID=10mA
f=100...1300MHz
2 4 6 8 10 12 14
Re (y11) ( mS )
Figure 9. Short Circuit Input Admittance
BF998/BF998R/BF998RW
Vishay Telefunken
5
0
VDS=8V
VG2S=4V
–5 f=100...1300MHz
f=100MHz
–10 ID=5mA
–15 10mA
–20 20mA
–25
400MHz
700MHz
–30 1000MHz
–35
1300MHz
–40
0 4 8 12 16 20 24 28 32
12821
Re (y21) ( mS )
Figure 10. Short Circuit Forward Transfer Admittance
9
8 f=1300MHz
7
6 1000MHz
5
4 700MHz
12822
3
2
1
0
0
400MHz
100MHz
VDS=15V
VG2S=4V
ID=10mA
f=100...1300MHz
0.25 0.50 0.75 1.00 1.25 1.50
Re (y22) ( mS )
Figure 11. Short Circuit Output Admittance
Document Number 85011
Rev. 4, 23-Jun-99
www.vishay.de • FaxBack +1-408-970-5600
5 (9)
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for BF998A electronic component. |
| Information | Total 9 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ BF998A.PDF Datasheet ] | |
Share Link :
Electronic Components Distributor
|
An electronic components distributor is a company that sources, stocks, and sells electronic components to manufacturers, engineers, and hobbyists. |
| SparkFun Electronics | Allied Electronics | DigiKey Electronics | Arrow Electronics |
| Mouser Electronics | Adafruit | Newark | Chip One Stop |
Featured Datasheets
| Part Number | Description | MFRS |
| BF998 | The function is Silicon N-channel dual-gate MOS-FETs. NXP Semiconductors |  |
| BF998 | The function is N-Channel Dual Gate MOS-Fieldeffect Tetrode/ Depletion Mode. Vishay Telefunken | |
| BF998 | The function is Silicon N Channel MOSFET Tetrode (Short-channel transistor with high S/C quality factor For low-noise/ gain-controlled input stages up to 1 GHz). Siemens Semiconductor Group |  |
Semiconductors commonly used in industry:
1N4148 |
BAW56 |
1N5400 |
NE555 | | ||
Quick jump to:
BF99
1N4
2N2
2SA
2SC
74H
BC
HCF
IRF
KA | ||