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| 2N3955 MONOLITHIC DUAL N-CHANNEL JFET The 2N3955 is a Low Noise, Low Drift, Monolithic Dual N-Channel JFET The 2N3955 family are matched JFET pairs for differential amplifiers. The 2N3955 family of general purpose JFETs is characterized for low and medium frequency differential amplifiers requiring low offset voltage, drift, noise and capacitance The 2N3955 family also exhibits low capacitance - 6pF max and a spot noise figure of -0.5dB max. The part offers a superior tracking ability. The hermetically sealed TO-71 and TO-78 packages are well suited for high reliability and harsh environment applications. (See Packaging Information). FEATURES LOWDRIFT LOWLEAKAGE LOWNOISE ABSOLUTEMAXIMUMRATINGS @25C(unlessotherwisenoted) |VGS12/T|=5V/Cmax. IG=20pATYP. en=10nV/HzTYP. 2N3955 Applications: Wideband Differential Amps High Input Impedance Amplifiers MaximumTemperatures StorageTemperature 65Cto+200C OperatingJunctionTemperature +150C MaximumVoltageandCurrentforEachTransistor-Note1 VGSS GateVoltagetoDrainorSource 60V VDSO DraintoSourceVoltage 60V IG(f) GateForwardCurrent 50mA MaximumPowerDissipation DeviceDissipation@FreeAir-Total400mW@25C MATCHINGCHARACTERISTICS@25CUNLESSOTHERWISENOTED SYMBOL CHARACTERISTICS VALUE UNITS CONDITIONS |VGS12/T|max. DRIFTVS. 25 V/C VDG=20V,ID=200A TEMPERATURE TA=55Cto+125C |VGS12|max. OFFSETVOLTAGE 10 mV VDG=20V,ID=200A MAX. 3000 1000 3 5 5 4.5 4 50 50 100 5 1 0.1 0.5 15 6 2 UNITS V V mho mho % mA % V V pA nA pA pA mho mho mho dB dB dB nV/Hz pF pF pF CONDITIONS VDS=0ID=1A IG=1nAID=0IS=0 VDG=20VVGS=0Vf=1kHz VDG=20VID=200A VDG=20VVGS=0V VDS=20VID=1nA VDS=20VID=200A VDG=20VID=200A TA=+125C VDG=10VID=200A VDG=20VVDS=0 VDG=20VVGS=0V VDG=20VID=200A www..com ELECTRICALCHARACTERISTICS@25C(unlessotherwisenoted) SYMBOL CHARACTERISTICS MIN. TYP. BVGSS BreakdownVoltage 60 BVGGO GateToGateBreakdown 60 TRANSCONDUCTANCE YfSS FullConduction 1000 2000 YfS TypicalOperation 500 700 |YFS12/YFS| Mismatch 0.6 DRAINCURRENT IDSS FullConduction 0.5 2 |IDSS12/IDSS| MismatchatFullConduction 1 GATEVOLTAGE VGS(off)orVp Pinchoffvoltage 1 2 VGS(on) OperatingRange 0.5 GATECURRENT IG Operating 20 IG HighTemperature IG ReducedVDG 5 IGSS AtFullConduction OUTPUTCONDUCTANCE YOSS FullConduction YOS Operating 0.1 |YOS12| Differential 0.01 COMMONMODEREJECTION CMR 20log|VGS12/VDS| 100 CMR 20log|VGS12/VDS| 75 NOISE NF Figure en Voltage CAPACITANCE CISS Input CRSS ReverseTransfer CDD DraintoDrain 0.1 Note 1 - These ratings are limiting values above which the serviceability of any semiconductor may be impaired Click To Buy VDS=10to20VID=200A VDS=5to10VID=200A VDS=20VVGS=0VRG=10M f=100HzNBW=6Hz VDS=20VID=200Af=10HzNBW=1Hz VDS=20VVGS=0Vf=1MHz VDG=20VID=200A TO-71 / TO-78 (Bottom View) Available Packages: 2N3955 in TO-71 / TO-78 2N3955 available as bare die Please contact Micross for full package and die dimensions Micross Components Europe Tel: +44 1603 788967 Email: chipcomponents@micross.com Web: http://www.micross.com/distribution Information furnished by Linear Integrated Systems and Micross Components is believed to be accurate and reliable. However, no responsibility is assumed for its use; nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Linear Integrated Systems. |
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