Fet J310

You can (of course) use other coils, I don't expect problems with other coils due to the good properties from the J310 FET in an oscillator and HF. This is a further progression in the application of the J310 JFET in high performance preamplifiers. This one is designed to amplify the 20KHz to 30 MHz range, uses the premium J310 FET and 2N5109 CATV bipolar transistors, giving a good combination of low thermal noise, gain and IMD resistance.

1 transistor (FET) oscillator usable for a broad frequency band. This oscillator can e.g. be used in a superheterodyne radio or whatever radio or transmitter. The buffer stage is necessary to decouple the oscillator from the load. If not decoupled, the oscillation can stop and/or is damped and the ouput volume (amplitude) goes down substantially, this can give not proper mixer results. When you want to make this circuit in real avoid stray capacitance, though the circuit is not critical and will always work. You can (of course) use other coils, I don't expect problems with other coils due to the good properties from the J310 FET in an oscillator and HF amplifier circuit.
More circuits (radio, audio, generator, etc) in my books, available on the Lulu website, author Ko Tilman. In my book 'Retro Radio' (only with Dutch text) you will find more radio schematics.
All the videos hat I have published on You Tube can be found via my Channel Trailer: Link is
https://youtu.be/xbgQ8T3oqh4
In thematic order you can find these video’s under the “comments” section. My books about electronics are available via the website from “Lulu”, search for author “Ko Tilman” there. My books are also available via Barnes and Noble and via Amazon. Regarding all my video’s: I constantly keep them actual, so the original video’s with the most recent information are always on YouTube. That is the source, and search there. When my video’s are reproduced or re-edited on other websites/channels you cannot be sure about the original content (=really working electronics) and important adaptations to the circuits.

Wideband, High Gain, Single, N- Channel JFET Others with the same file for datasheet: U308, U309, U310: Download J310 datasheet from Linear Systems: pdf 136 kb: TRANS JFET N-CH 60MA 3TO-92: Download J310 datasheet from New Jersey Semiconductor.

Type Designator: J310

Type of Transistor: JFET

Type of Control Channel: N -Channel

Maximum Power Dissipation (Pd): 0.4 W

Maximum Drain-Source Voltage |Vds|: 25 V

Minimum Gate-to-Source Cutoff Voltage |Vgs(off)|: -2 V

Maximum Drain Current |Id|: 0.05 A

Maximum Junction Temperature (Tj): 150 °C

Maximum Drain-Source On-State Resistance (Rds): 50 Ohm

Package: TO92

Fet J310 Equivalent

J310 Transistor Equivalent Substitute - MOSFET Cross-Reference Search

J310 Datasheet (PDF)

0.1. mmbfj309 mmbfj310.pdf Size:165K _motorola

MOTOROLAOrder this documentSEMICONDUCTOR TECHNICAL DATAby MMBFJ309LT1/DJFET VHF/UHF Amplifier TransistorMMBFJ309LT1N Channel2 SOURCEMMBFJ310LT13GATE1 DRAIN31MAXIMUM RATING

0.2. pmbfj308 pmbfj309 pmbfj310 2.pdf Size:68K _philips

DISCRETE SEMICONDUCTORSDATA SHEETPMBFJ308; PMBFJ309;PMBFJ310N-channel silicon field-effecttransistorsProduct specification 1996 Sep 11Supersedes data of April 1995File under Discrete Semiconductors, SC07Philips Semiconductors Product specificationPMBFJ308; PMBFJ309;N-channel silicon field-effect transistorsPMBFJ310FEATURES PINNING - SOT23 Low noisePIN SYMBOL DE

0.3. j308-j309-j310.pdf Size:96K _philips

DISCRETE SEMICONDUCTORSDATA SHEETJ308; J309; J310N-channel silicon field-effecttransistorsProduct specification 1996 Jul 30Supersedes data of April 1995File under Discrete Semiconductors, SC07Philips Semiconductors Product specificationN-channel silicon field-effect transistors J308; J309; J310FEATURES PINNING - TO-92 Low noisePIN SYMBOL DESCRIPTION Interchangea

J310 Circuits

0.4. mmbfj310.pdf Size:152K _fairchild_semi

J309 MMBFJ309J310 MMBFJ310GSG TO-92S SOT-23NOTE: Source & DrainDD are interchangeableMark: 6U / 6TN-Channel RF AmplifierThis device is designed for VHF/UHF amplifier, oscillator and mixerapplications. As a common gate amplifier, 16 dB at 100 MHz and12 dB at 450 MHz can be realized. Sourced from Process 92.Absolute Maximum Ratings* TA = 25C unless otherwise noted

0.5. j310.pdf Size:561K _fairchild_semi

Discrete POWER & SignalTechnologiesJ309 MMBFJ309J310 MMBFJ310GDG TO-92S SOT-23 SDMark: 6U / 6TN-Channel RF AmplifierThis device is designed for VHF/UHF amplifier, oscillator and mixerapplications. As a common gate amplifier, 16 dB at 100 MHz and12 dB at 450 MHz can be realized. Sourced from Process 92.Absolute Maximum Ratings* TA = 25C unless otherwise notedSymbo

0.6. j309 j310 mmbfj309 mmbfj310.pdf Size:207K _fairchild_semi

December 2010J309 / J310 / MMBFJ309 / MMBFJ310N-Channel RF AmplifierFeatures This device is designed for VHF/UHF amplifier, oscillator and mixer applications. As a common gate amplifier, 16 dB at 100 MHz and 12 dB at 450 MHz can be realized. Sourced from Process 92. Source & Drain are interchangeable.J309 MMBFJ309J310 MMBFJ310GSSOT-23G TO-92 Mark MMBFJ309

0.7. j308 sst308 j309 sst309 j310 sst310 u309 u310.pdf Size:96K _vishay

J/SST/U308 SeriesVishay SiliconixN-Channel JFETsJ308 SST308 U309J309 SST309 U310J310 SST310PRODUCT SUMMARYPart Number VGS(off) (V) V(BR)GSS Min (V) gfs Min (mS) IDSS Min (mA)J308 -1 to -6.5 -25 8 12J309 -1 to -4 -25 10 12J310 -2 to -6.5 -25 8 24SST308 -1 to -6.5 -25 8 12SST309 -1 to -4 -25 10 12SST310 -2 to -6.5 -25 8 24U309 -1 to -4 -25 10 12U310 -2.5 to -6 -25 10

0.8. cmpfj310.pdf Size:49K _central

0.9. j309g j310g.pdf Size:66K _onsemi

J309, J310Preferred Device JFET VHF/UHF AmplifiersN-Channel DepletionFeatureshttp://onsemi.com Pb-Free Packages are Available*1 DRAINMAXIMUM RATINGSRating Symbol Value Unit3Drain-Source Voltage VDS 25 VdcGATEGate -Source Voltage VGS 25 VdcForward Gate Current IGF 10 mAdc2 SOURCETotal Device Dissipation @ TA = 25C PD 350 mWDerate above = 25C 2.8 mW/

0.10. mmbfj309lt1 mmbfj310lt1.pdf Size:144K _onsemi

MMBFJ309LT1G,MMBFJ310LT1GJFET - VHF/UHF AmplifierTransistorN-Channelhttp://onsemi.comFeatures2 SOURCE These Devices are Pb-Free, Halogen Free/BFR Free and are RoHSCompliant3GATEMAXIMUM RATINGSRating Symbol Value Unit1 DRAINDrain-Source Voltage VDS 25 VdcGate-Source Voltage VGS 25 VdcGate Current IG 10 mAdc3SOT-23 (TO-236)THERMAL CHARACTERISTICS CASE 31

0.11. smmbfj310lt1g smmbfj310lt3g.pdf Size:101K _onsemi

MMBFJ309L, MMBFJ310L,SMMBFJ310LJFET - VHF/UHF AmplifierTransistorN-Channelhttp://onsemi.comFeatures2 SOURCE Drain and Source are Interchangeable S Prefix for Automotive and Other Applications Requiring Unique3Site and Control Change Requirements; AEC-Q101 Qualified andGATEPPAP Capable These Devices are Pb-Free, Halogen Free/BFR Free and are RoHS1 DRAINCo

0.12. j308 j309 j310 sst308 sst310 sst309 u309 u310.pdf Size:98K _siliconix

J/SST/U308 SeriesN-Channel JFETsJ308 SST308 U309J309 SST309 U310J310 SST310Product SummaryPart Number VGS(off) (V) V(BR)GSS Min (V) gfs Min (mS) IDSS Min (mA)J308 1 to 6.5 25 8 12J309 1 to 4 25 10 12J310 2 to 6.5 25 8 24SST308 1 to 6.5 25 8 12SST309 1 to 4 25 10 12SST310 2 to 6.5 25 8 24U309 1 to 4 25 10 12

J310 Jfet Datasheet

Datasheet: FW274, FW282, FW707, FW811, FW812, FW813, FW906, FW907, IRF730, MCH3374, MCH3377, MCH3383, MCH3475, MCH3477, MCH3484, MCH6320, MCH6321.

J310 Substitute

J310 Datasheet Pdf

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Fet J310 Equivalent

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