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Product Description:
The J/SST/U308 Series N-Channel JFETs are designed for high-frequency applications, offering excellent amplification characteristics and superb high-frequency performance. Ideal for high-speed switching and amplification in various electronic devices.
Key Features:
- High Power Gain at Low Noise: Achieves 11.5 dB @ 450 MHz
- Very Low Distortion and Noise: 2.7 dB @ 450 MHz
- High ac/dc Switch Off-Isolation for Enhanced System Sensitivity
- Wideband High Gain for Quality Amplification
Technical Specifications:
- VGS(off): -1 to -6.5 V (J308, SST308, U309), -1 to -4 V (J309, SST309), -2 to -6.5 V (J310, SST310, U310)
- V(BR)GSS Min: -25 V
- gfs Min: 8 mS (J308, SST308), 10 mS (J309, SST309, U309), 24 mS (J310, SST310, U310)
- IDSS Min: 12 mA (J308, SST308, J309, SST309, U309), 24 mA (J310, SST310, U310)
Available in multiple packaging options including TO-226AA (TO-92), TO-236 (SOT-23), and hermetically-sealed TO-206AC (TO-52), suitable for automated assembly and military-grade applications.
Applications:
- High-Frequency Amplifier/Mixer
- Oscillator
- Sample-and-Hold Circuits
- Low-Level Signal Amplification
These JFETs are perfect for engineers and hobbyists seeking high-performance components for their electronic projects.
Roy (Virginia)
September 3, 2025
They was good quality and worked good
Doktor Dreem
July 29, 2025
I will use these JFETs to provide bias current for block detection on my model trains and so need the ability to control the current. I tested a number of parts at random and the zero-bias drain current (Idss) was in specification for this device, but as expected, Idss varies quite a bit. Using a 37 ohm source resistor to develop a negative gate bias, and 6.5V drain voltage, multiple parts pulled out of my collection of 30 parts were 20 +/- 2 mA, so these parts test very good.
Eric
July 17, 2025
FYI the only J310 datasheets I found only doesn't list a typical threshold voltage, but I measured to be -3.67 V with a std dev of .083 V, with a range from -3.55 V to -3.84 V. That is a much narrower range than what the datasheet says of -2.0 V to -6.0 V.
davebehee
July 8, 2025
Not much to say, they worked as needed, thank you...
Steve Ziblut
June 19, 2025
Used several jfets right away. Tested 5 of the 10 I purchased and all 5 were very close - I picked the two most similar and the project functioned as expected.
GBall
May 23, 2025
They appear to all function with a simple current test. I'll soon fire 2 up in a mic pre ckt and see for sure.
Uncle Ernie
May 1, 2025
Arrived on time and correct product.
Irvan
April 28, 2025
Must have been loaded
Christian
April 24, 2025
Transistors dans l'extrême limite basse des specs - passe entre 2,6 et 3mA IDSS max.Vgs off à -0,3 / -0,5V.Même pour des 245A, c'est extrêmement faible.
もりもり星人
April 20, 2025
ãƒãƒ©ãƒ„ã‚ãŒæ°—ã«ãªã‚Šã¾ã—ãŸã€‚Idssã§0.11~2.0mAã¨çµæ§‹ãªãƒãƒ©ãƒ„ã‚ã§ã™ã€‚ãŸã 2ペア作れãŸã®ã§ç›®çš„ã¯é”æˆã—ã¾ã—ãŸã€‚残りã¯ã‚¸ãƒ£ãƒ³ã‚¯ç®±ã¸ã€œç¬‘
AUGUSTO
February 14, 2025
ok perfetto
M SELVAM
February 1, 2025
It is to be used as driver for load (relay, led,etc.) at the output of SR Flip flop formed by NAND gates of 4011 IC.
Maurice
January 18, 2025
Remplacement de J310 sur montage HF, parfait.
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