BF998R ,Silicon N-channel dual-gate MOS-FETsRev. 4, 23-Jun-991 (8)BF998/BF998R/BF998RWVishay SemiconductorsMaximum Thermal ResistanceT = 25
BF998-BF998R
N-Channel Dual Gate MOS‐Fieldeffect Tetrode, Depletion Mode
BF998/BF998R/BF998RW
Vishay Semiconductorswww.vishay.com
Document Number 85011
N–Channel Dual Gate MOS-Fieldeffect Tetrode,
Depletion ModeElectrostatic sensitive device.
Observe precautions for handling.
ApplicationsInput and mixer stages in UHF tuners.
Features Integrated gate protection diodes Low noise figure Low feedback capacitance High cross modulation performance Low input capacitance High AGC-range High gain
3BF998 Marking: MO
Plastic case (SOT 143)
1 = Source, 2 = Drain, 3 = Gate 2, 4 = Gate 1
1BF998R Marking: MOR
Plastic case (SOT 143R)
1 = Source, 2 = Drain, 3 = Gate 2, 4 = Gate 1
1413 56613 654
BF998RW Marking: WMO
Plastic case (SOT 343R)
1 = Source, 2 = Drain, 3 = Gate 2, 4 = Gate 1
Absolute Maximum RatingsTamb = 25 C, unless otherwise specified