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 U309 N-CHANNEL JFET
Linear Systems replaces discontinued Siliconix U309
The U309 is a high frequency n-channel JFET offering a wide range and low noise performance. The hermetically sealed TO-18 package is well suited for high reliability and harsh environment applications. (See Packaging Information). FEATURES DIRECTREPLACEMENTFORSILICONIXU309 OUTSTANDINGHIGHFREQUENCYGAIN LOWHIGHFREQUENCYNOISE ABSOLUTEMAXIMUMRATINGS@25C1 Gpg =11.5dB NF=2.7dB
MaximumTemperatures StorageTemperature 55Cto+150C High Power Low Noise gain OperatingJunctionTemperature 55Cto+135C Dynamic Range greater than 100dB MaximumPowerDissipation Easily matched to 75 input ContinuousPowerDissipation 500mW U309 Applications: MAXIMUMCURRENT GateCurrent 10mA UHV / VHF Amplifiers MAXIMUMVOLTAGES Mixers GatetoDrainVoltageorGatetoSourceVoltage 25V Oscillators U309ELECTRICALCHARACTERISTICS@25C(unlessotherwisenoted) SYMBOL CHARACTERISTIC MIN TYP. MAX UNIT CONDITIONS BVGSS GatetoSourceBreakdownVoltage 25 V VDS=0V,IG=1A VGS(F) GatetoSourceForwardVoltage 0.7 1 VDS=0V,IG=10mA VGS(off) GatetoSourceCutoffVoltage 1 4 VDS=10V,ID=1nA IDSS DraintoSourceSaturationCurrent2 12 30 mA VDS=10V,VGS=0V IG GateOperatingCurrent(Note3) 15 pA VDG=9V,ID=10mA rDS(on) DraintoSourceOnResistance 35 VGS=0V,ID=1mA U309DYNAMICELECTRICALCHARACTERISTICS@25C(unlessotherwisenoted) SYMBOL CHARACTERISTIC MIN TYP. MAX UNIT CONDITIONS gfs ForwardTransconductance 10 14 mS VDS=10V,ID=10mA,f=1kHz gos OutputConductance 110 250 S Ciss InputCapacitance 4 5 pF VDS=10V,VGS=10V,f=1MHz Crss ReverseTransferCapacitance 1.9 2.5 en EquivalentNoiseVoltage 6 nV/Hz VDS=10V,ID=10mA,f=100Hz U309HIGHFREQUENCYCHARACTERISTICS@25C(unlessotherwisenoted) SYMBOL CHARACTERISTIC MIN TYP MAX UNIT CONDITIONS
U309 Benefits:
Click To Buy
NoiseFigure PowerGain3 ForwardTransconductance OutputConductance f=105MHz f=450MHz f=105MHz f=450MHz f=105MHz f=450MHz f=105MHz f=450MHz 1.5 2.7 16 11.5 14 13 0.16 0.55 dB dB mS Available Packages: U309 in TO-18 U309 in bare die. TO-18 (Bottom View)
NF Gpg gfg gog
VDS=10V,ID=10mA
Note1AbsolutemaximumratingsarelimitingvaluesabovewhichU309 serviceabilitymaybeimpaired. Note2Pulsetest:PW300s,DutyCycle3% Note3Measuredatoptimuminputnoisematch Micross Components Europe
Tel: +44 1603 788967 Email: chipcomponents@micross.com Web: http://www.micross.com/distribution
Please contact Micross for full package and die dimensions
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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Micross Components Ltd, United Kingdom, Tel: +44 1603 788967, Fax: +44 1603788920, Email: chipcomponents@micross.com Web: www.micross.com/distribution.aspx


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Price & Availability of U309
Newark

Part # Manufacturer Description Price BuyNow  Qty.
U309
13C1876		 Vishay Intertechnologies Transistor; Gate Source Breakdown Voltage Max:-25V; Zero Gate Voltage Drain Current Max:30Ma; Gate Source Cutoff Voltage Max:-4V; No. Of Pins:3 Pin; Operating Temperature Max:150°C; Channel Type:N Channel; Product Range:-; Msl:- Rohs Compliant: No |Vishay U309 BuyNow
0
N9935AU-309
07W8275		 Agilent Technologies Inc Dc Bias Variable-Voltage Source Rohs Compliant: Na |Keysight Technologies N9935AU-309 1: USD677
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N9938BU-309
33AH0577		 Agilent Technologies Inc N9938Bu/Dc Bias Variable-Voltage Source |Keysight Technologies N9938BU-309 1: USD665
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N9917AU-309
07W8220		 Agilent Technologies Inc Dc Bias Variable-Voltage Source, Fieldfox Analyzer; Accessory Type:Dc Bias Variable-Voltage Source; For Use With:Keysight N9917A Fieldfox Microwave Combination Analyzers; Product Range:- Rohs Compliant: Na |Keysight Technologies N9917AU-309 1: USD664
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XT4LU3090BFF000XXX
64Y5707		 ABB Low Voltage Products and Systems Xt4L 250 Tma 90 450-900 3Pff Ul/Csa |Abb XT4LU3090BFF000XXX 25: USD1554.67
10: USD1609.8
5: USD1642.88
3: USD1675.96
1: USD1742.11
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DigiKey

Part # Manufacturer Description Price BuyNow  Qty.
U309 TO-18 3L
4004-U309TO-183L-ND		 Linear Integrated Systems JFET N-CH 25V TO18-3 2000: USD3.19413
1000: USD3.40875
500: USD3.7875
100: USD4.2925
10: USD5.151
1: USD6.01
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440
ASLD311122DNU-309-S
ASLD311122DNU-309-S-ND		 IDEC Corporation SWITCH SELECTOR 3POS 12V 1: USD94.06
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ASLD31QH222DNU-309-W
ASLD31QH222DNU-309-W-ND		 IDEC Corporation SWITCH SELECTOR 3POS 120V 1: USD94.59
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ASLD322222DNU-309-Y
ASLD322222DNU-309-Y-ND		 IDEC Corporation SWITCH SELECTOR 3POS 24V 1: USD94.06
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0
ASLD326622DNU-309-W
ASLD326622DNU-309-W-ND		 IDEC Corporation SWITCH SELECTOR 3POS 6V 1: USD83.01
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Avnet Americas

Part # Manufacturer Description Price BuyNow  Qty.
C901U309CVNDBAWL35
C901U309CVNDBAWL35		 KEMET Corporation CERAMIC DISC CAP - Tape and Reel (Alt: C901U309CVNDBAWL35) RFQ
0
C901U309CZNDCAWL50
C901U309CZNDCAWL50		 KEMET Corporation CERAMIC DISC CAP - Tape and Reel (Alt: C901U309CZNDCAWL50) RFQ
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C905U309CYNDBA7317
C905U309CYNDBA7317		 KEMET Corporation CERAMIC DISC CAP - Ammo Pack (Alt: C905U309CYNDBA7317) RFQ
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RW74U3091FS73
RW74U3091FS73		 Vishay Intertechnologies RS-5-69 3.09K 1% RW74U3091F S73 - Tape and Reel (Alt: RW74U3091FS73) 50000: USD1.1124
5000: USD1.17008
4000: USD1.22776
3000: USD1.2772
2000: USD1.32252
1000: USD1.36784
500: USD1.51435
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C901U309CUNDAAWL45
C901U309CUNDAAWL45		 KEMET Corporation CERAMIC DISC CAP - Tape and Reel (Alt: C901U309CUNDAAWL45) RFQ
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Mouser Electronics

Part # Manufacturer Description Price BuyNow  Qty.
U309
106-U309		 InterFET Corporation JFET JFET N-Channel -25V Low Noise 1: USD11.49
10: USD10.12
25: USD9.85
50: USD9.3
100: USD8.75
250: USD8.48
500: USD7.93
1000: USD7.28
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L1CU-3090000000000
997-L1CU3090000		 Lumileds High Power LEDs - White White 3000 K 90-CRI, LUXEON CZ Color 1: USD2.36
10: USD1.58
100: USD1.22
250: USD1.18
500: USD1.11
1000: USD0.941
2000: USD0.889
5000: USD0.869
 RFQ
0
ASD31L22NU-309
199-ASD31L22NU309		 IDEC Corporation Control Switches 30mm TWND Series Diecast Zinc Selector Switch Knob Operator 45-3 position 1: USD60.23
10: USD60.22
25: USD57.21
50: USD55.17
100: USD53.73
 RFQ
0
ASD31K22NU-309
199-ASD31K22NU309		 IDEC Corporation Keylock Switches 30mm TWND Series Diecast Zinc Selector Switch Key Selector 45-3 position 1: USD88.43
10: USD84.92
25: USD79.98
50: USD77.66
100: USD75.85
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0
ASD322NU-309
199-ASD322NU309		 IDEC Corporation Control Switches 30mm TWND Series Diecast Zinc Selector Switch Knob Operator 45-3 position 1: USD50.85
10: USD49.41
25: USD47.96
50: USD46.56
100: USD45.64
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0

RS

Part # Manufacturer Description Price BuyNow  Qty.
U309
72540343		 FAG Bearings Seating Ring, 65mm ID, 90mm OD, 10mm Width | FAG Bearings (Schaeffler) U309 1: USD110.07
3: USD106.67
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P-RSM 40-330-5M (ALTERNATE: U-30900)
70266305		 TURCK Inc Process Automation, Cordset,7/8-16UN Male Straight,4 Wire,5 Meter, PVC, Black | Turck P-RSM 40-330-5M 1: USD37.81
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XT1SU3090AFF000XXX (ALTERNATE: 1SDA074675R1)
71864703		 ABB Low Voltage Products and Systems XT1 125A Frame 3P Thermal/Magnetic Fixed 35k -480V w/o Lugs 90 Amp | ABB XT1SU3090AFF000XXX 1: USD444.94
10: USD422.69
25: USD400.44
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XT1HU3090AFF000XXX (ALTERNATE: 1SDA074705R1)
71864718		 ABB Low Voltage Products and Systems XT1 125A Frame 3P Thermal/Magnetic Fixed 65k -480V w/o Lugs 90 Amp | ABB XT1HU3090AFF000XXX 1: USD578.5
10: USD549.58
25: USD520.65
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XT2LU3090BFF000XXX (ALTERNATE: 1SDA074827R1)
71864845		 ABB Low Voltage Products and Systems XT2 125A Frame 3P Thermal/Magnetic Adjustable 100k -480V w/o Lugs 90 Amp | ABB XT2LU3090BFF000XXX 1: USD1305.91
5: USD1266.73
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Future Electronics

Part # Manufacturer Description Price BuyNow  Qty.
U309
 Calogic Inc U309 Series -25 V 20 mA N-Channel JFET High Frequency Amplifier - TO-52 500: USD8.13
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Bisco Industries

Part # Manufacturer Description Price BuyNow  Qty.
U-309
 MISCELLANEOUS BuyNow
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SU309-4D-13
 UNICORP BuyNow
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SU309-1D-7
 UNICORP BuyNow
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Bristol Electronics

Part # Manufacturer Description Price BuyNow  Qty.
U309
 Vishay Siliconix 1: USD6.72
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DB2U30900L
 Panduit Corp RFQ
5618

Quest Components

Part # Manufacturer Description Price BuyNow  Qty.
U309
 Vishay Siliconix JFET Transistor, N-Channel, TO-206AC 5: USD4.5
2: USD6
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U3090MG
 TFK 5: USD16.2344
2: USD17.0461
1: USD18.2637
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TTI

Part # Manufacturer Description Price BuyNow  Qty.
RW79U3091FB12
RW79U3091FB12		 Vishay Intertechnologies Wirewound Resistors - Through Hole 3.09K OHM 1% 3W BuyNow
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TME

Part # Manufacturer Description Price BuyNow  Qty.
NU 309 ECJ/C3 SKF
SKFNU309ECJ/C3		 SKF Bearing: cylindrical roller, single row; Øint: 45mm; Øout: 100mm 12: USD93.04
6: USD99.68
1: USD106.32
 RFQ
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Karl Kruse GmbH & Co KG

Part # Manufacturer Description Price BuyNow  Qty.
U309
 Calogic Inc FET Transistor N-Channel JFET High Frequency Amplifier RFQ
500

NAC

Part # Manufacturer Description Price BuyNow  Qty.
U309
 Calogic Inc 1: USD6.98
250: USD6.28
500: USD6.14
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MSLU309
 Minmax Technology Co Ltd DC/DC Converter 1: USD6.46
250: USD5.91
500: USD5.83
1000: USD5.29
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MSAU309
 Minmax Technology Co Ltd DC/DC Converter 1: USD7.54
250: USD7.4
500: USD7.03
1000: USD6.38
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U309-TO-18
 Linear Integrated Systems Wideband, High Gain, Single, N- Channel JFET 1: USD3.66
100: USD3.48
1000: USD3.31
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Sager

Part # Manufacturer Description Price BuyNow  Qty.
3100U30971
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3100U30978
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3100U30987
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3100U30927
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ASD31L22NU-309
000000000006278139		 IDEC Corporation Control Switches 30mm TWND Series Diecast Zinc Selector Switch Knob Operator 45-3 position 1: USD58.34
7: USD55.76
14: USD54.17
29: USD52.67
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Avnet Silica

Part # Manufacturer Description Price BuyNow  Qty.
L1CU-3090000000000
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DB Roberts

Part # Manufacturer Description Price BuyNow  Qty.
SU309-1F-7
UNISU309-1F-7		 UNICORP SWAGE SPACER 1: USD0.0001
32: USD0.0001
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ES Components

Part # Manufacturer Description Price BuyNow  Qty.
U309
 Vishay Siliconix SIL U309 BARE DIE RFQ
2895
U309
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Flip Electronics

Part # Manufacturer Description Price BuyNow  Qty.
L1CU-3090000000000
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 RFQ
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Neutron USA

Part # Manufacturer Description Price BuyNow  Qty.
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 ABB Low Voltage Products and Systems Molded Case Circuit Breaker, 3-P, 90A, TMF Trip Unit, 65kAIC-480V 1: USD1040.14
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Perfect Parts Corporation

Part # Manufacturer Description Price BuyNow  Qty.
U309
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334
WF04U3091D#L
 Walsin Technology Corporation RFQ
2509
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TestEquity LLC

Part # Manufacturer Description Price BuyNow  Qty.
N9913CU/309
24031191755363		 Keysight Technologies Keysight N9913CU/309 Fieldfox N9913C Upgrade, DC Bias Variable-Voltage Source 1: USD617
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N9950BU/309
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N9916BU/309
2302061123375385		 Keysight Technologies Keysight N9916BU/309 DC Bias Variable Voltage Source Option, +32 V, .65 A, 7 W, FieldFox Series 1: USD665
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N9928AU/309
2302081128029363		 Keysight Technologies Keysight N9928AU/309 DC Bias Variable Voltage Source Option, +32 V, .65 A, 7 W, FieldFox Series 1: USD664
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N9914CU/309
240311936013298		 Keysight Technologies Keysight N9914CU/309 Fieldfox N9914C Upgrade, DC Bias Variable-Voltage Source 1: USD617
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Venkel Ltd.

Part # Manufacturer Description Price BuyNow  Qty.
HPCR0805-U-3090FT
HPCR0805-U-3090FT		 VENKEL LTD High Power CR;0805;1/3W;309R;�1% BuyNow
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CRG1210-U-3091FT
CRG1210-U-3091FT		 VENKEL LTD RoHS 10/10 Green CR;1210;1/3W;3.09K;�1% BuyNow
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HPCR0805-U-3093FT
HPCR0805-U-3093FT		 VENKEL LTD High Power CR;0805;1/3W;309K ;�1% BuyNow
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HPCR0805-U-3091FT		 VENKEL LTD High Power CR;0805;1/3W;3.09K;�1% BuyNow
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