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FEATURES
DIRECTREPLACEMENTFORSILICONIXSST4391
LOWONRESISTANCErDS
(
on
)
≤30Ω
LOWGATEOPERATINGCURRENTID
(
off
)
=5pA
FASTSWITCHINGt
(
ON
)
≤=15ns
ABSOLUTEMAXIMUMRATINGS1@25°C(unlessotherwisenoted)
MaximumTemperatures
StorageTemperature‐65°Cto+200°C
OperatingJunctionTemperature‐55°Cto+200°C
MaximumPowerDissipation
ContinuousPowerDissipation 350mW
MAXIMUMCURRENT
GateCurrent(Note1)IG=50mA
MAXIMUMVOLTAGES
GatetoDrainVoltage/GatetoSourceVoltage‐35V
SST4391ELECTRICALCHARACTERISTICS@25°C(unlessotherwisenoted)
SYMBOLCHARACTERISTICMINTYP.MAXUNITSCONDITIONS
BVGSSGatetoSourceBreakdownVoltage‐35 ‐‐ ‐‐
V
IG=‐1µA,VDS=0V
VGS
(
off
)
GatetoSourceCutoffVoltage‐4 ‐‐ ‐10VDS=15V,ID=10nA
VGS
(
F
)
GatetoSourceForwardVoltage ‐‐ 0.71 IG=1mA,VDS=0V
VDS
(
on
)
DraintoSourceOnVoltage ‐‐ 0.25 ‐‐ VGS=0V,ID=3mA
VDS
(
on
)
DraintoSourceOnVoltage ‐‐ 0.3 ‐‐ VGS=0V,ID=6mA
VDS
(
on
)
DraintoSourceOnVoltage ‐‐ 0.350.4 VGS=0V,ID=12mA
IDSSDraintoSourceSaturationCurrent250 ‐‐ ‐‐ mAVDS=20V,VGS=0V
IGSSGateReverseCurrent ‐‐ ‐5‐100
pA
VGS=‐20V,VDS=0V
IGGateOperatingCurrent ‐‐ ‐5 ‐‐ VDG=15V,ID=10mA
ID
(
off
DrainCutoffCurrent ‐‐ 5100VDS=10V,VGS=‐10V
rDS
(
on
)
DraintoSourceOnResistance ‐‐ ‐‐ 30Ω VGS=0V,ID=1mA
SST4391DYNAMICELECTRICALCHARACTERISTICS@25°C(unlessotherwisenoted)
SYMBOLCHARACTERISTICTYPMINMAXUNITSCONDITIONS
gfsForwardTransconductance6 ‐‐ ‐‐ mSVDS=20V,ID=1mA,f=1kHz
gosOutputConductance25 ‐‐ ‐‐ µSVDS=20V,ID=1mA,f=1kHz
rds(on)DraintoSourceOnResistance ‐‐ ‐‐ 30Ω VGS=0V,ID=0A,f=1kHz
CissInputCapacitance13 ‐‐ ‐‐
pF
VDS=20V,VGS=0V,f=1MHz
Crss
ReverseTransferCapacitance
3.6 ‐‐ ‐‐ VDS=0V,VGS=‐5V,f=1MHz
Crss3.5 ‐‐ ‐‐ VDS=0V,VGS=‐7V,f=1MHz
Crss3.1 ‐‐ ‐‐ VDS=0V,VGS=‐12V,f=1MHz
enEquivalentInputNoiseVoltage3 ‐‐ ‐‐ nV/√HzVDS=10V,ID=10mA,f=1kHz
SST4391SWITCHINGELECTRICALCHARACTERISTICS@25°C(unlessotherwisenoted)
SYMBOLCHARACTERISTICTYPMINMAXUNITSCONDITIONS
td(on)
TurnOnTime
2 ‐‐ ‐‐
ns
VDD=10V,VGS(H)=0V
tr2 ‐‐ ‐‐
td(off)
TurnOffTime
6 ‐‐ ‐‐
tf13 ‐‐ ‐‐
Notes:1.Absoluteratingsarelimitingvaluesabovewhichserviceabilitymaybeimpaired
2.Pulsetest:PW≤300µs,DutyCycle≤3%
SST4391SWITCHINGCIRCUITPARAMETERSSWITCHINGCIRCUIT
VGS(L)‐12V
RL800Ω
ID(on)12mA





SST4391
Single N-Channel JFET switch
Linear S
y
stems re
p
laces discontinued Siliconix SST4391
The SST4391 features many of the superior
characteristics of JFETs which make it a good choice
for demanding analog switching applications and for
specialized amplifier circuits.
SST4391 Applications:
Analog Switches
Choppers, Sample-and-Hold
Normally “On” Switches, Current Limiters
SST4391 Benefits:
Low Error Voltage
High-Speed Analog Circuit Performance
Negligible “Off-Error,” Excellent Accuracy
Good Frequency Response, Low Glitches
Eliminates Additional Bufferin
g
Micross Components Europe
Tel: +44 1603 788967
Email: chipcomponents@micross.com
Web: http://www.micross.com/distribution
Available Packages:
SST4391 in SOT-23
SST4391 in bare die.
Contact Micross for full package and die dimensions
SOT-23 (Top View)