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The J-FET (Junction Field Effect Transistor) is a voltage controlled device: that is a small change in input voltage causes a large change in output current. FET operation involves an electric field which controls the flow of a charge (current) through the device.

In contrast with J-FET, a bipolar transistor employs a small input current to control a large output current.The source, drain, and gate terminal of the FET are analogous to the emitter, collector, and base of a bipolar transistor. The terms n- channel and p-channel refer to the material which the drain and source are connected.

Basic Specifications of J-FET are :

• Gate source breakdown voltage (BVgss) of J-FET
• Gate reverse leakage current (Igss) in J-FET
• Gate source cutoff voltage (Vgs(off)) of J-FET
• Drain current in J-FET at zero gate voltage (Idss)
• Forward transconductance (Gfs) of J-FET
• Input capacitance (Ciss) of J-FE
• J-FET Switching considerations
• J-FET Drain-source on resistance (Rds(on))

Here are a few J-FET's From American Microsemiconductor: (click below for specifications, ordering and pricing information)

• P-Channel
• 2N2499, 2N2608, 2N2609, 2N2842, 2N2843, 2N3329, 2N3330, 2N3386, 2N3574 2N3575, 2N3820, 2N3993, 2N3993A, 2N4343, 2N4360, 2N4381, 2N4382, 2N5019, 2N5021, 2N5033, 2N5114, 2N5115, 2N5116, 2N5265, 2N5460, 2N5461, 2N5462 2N5463, 2SJ106, P1087, PN4342, TIXM301, TIXS33, U110, U112, VN5201CN
• N-Channel (135 different standard components)
• 2N3068, 2N3070, 2N3365, 2N3368, 2N3369, 2N3436, 2N3454, 2N3460, 2N4091, 2N4092, 2N4093, 2N4117A, 2N4220, 2N4221, 2N4221A, 2N4224, 2N4302, 2N4303 2N4861, 2N4861A, 2N4867, 2N4868, 2N5078, 2N5163, 2N5245, 2N5246, 2N5277 2SA23, 2SB1560, 2SB748A, 2SK163, 2SK186, 2SK19, 2SK246, 2SK30A, 2SK146 2SK150, 2SK389, E431, E430, U401.

Did you Know...

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