JFETs

JFETs A JFET is a four terminal device, the terminals are called gate, drain, source and body. The body terminal is always connected to the source. There are two types of JFETs an N-Channel & P-Channel.What does JFET stand for? JFET stands for junction field-effect transistorN-Channel JFET ConstructionThe name N-Channel signifies that the electrons are the majority charge carriers. To form the N-Channel an N type semiconductor is used as a base and doped with a P type semiconductor at both ends. Both these P regions are electrically linked together with an ohmic contact at the gate. Two further terminals are taken out at the opposite ends for the drain and the source.P-Channel JFET ConstructionThe name P channel signifies that the holes are the majority charge carriers. To form the P-Channel a P type semiconductor is used as a base and doped with an N type semiconductor at both ends. Both these N regions are electrically linked together with an ohmic contact at the gate. Two further terminals are taken out at the opposite ends for the drain and the source.Features and Benefits High input impedance Voltage controlled device High degree of isolation between the input and the output Less noiseWhat are they also known as? JUGFETWhat are JFET transistors used for? JFET transistors have many applications in electronics and communication. You can use them as an electronically controlled switch to control electric power to a load, and as amplifiers.What is the difference between a JFET & BJT (Bipolar Junction Transistor)? The main difference between a JFET and BJT is a field effect transistor only majority charge carrier flows while the BJT (bipolar transistor) offers both majority and minority charge carrier flows.What is doping of semiconductors? Doping is the process of including foreign impurities to intrinsic semiconductors to change their electrical properties. Trivalent atoms used to dope silicon cause an intrinsic semiconductor to become a P-Type semiconductor. Pentavalent used to dope silicon cause an intrinsic semiconductor to become an N-Type semiconductor.

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Description Price Channel Type Idss Drain-Source Cut-off Current Maximum Drain Source Voltage Maximum Gate Source Voltage Maximum Drain Gate Voltage Configuration Transistor Configuration Maximum Drain Source Resistance Mounting Type Package Type Pin Count Drain Gate On-Capacitance Source Gate On-Capacitance Dimensions
RS Stock No. 163-2021
Mfr. Part No.2SK3557-7-TB-E
TWD4.80
Each (On a Reel of 3000)
units
N 16 → 32mA 15 V - -15V Single Single - Surface Mount CP 3 10pF 2.9pF 2.9 x 1.5 x 1.1mm
RS Stock No. 626-3314
Mfr. Part No.PMBFJ309,215
BrandNXP
TWD9.20
Each (In a Pack of 10)
units
N 12 → 30mA 25 V -25 V -25V Single Single 50 Ω Surface Mount SOT-23 (TO-236AB) 3 - - 3 x 1.4 x 1mm
RS Stock No. 177-5508
Mfr. Part No.2N4392CSM
BrandSemelab
TWD1,850.90
Each (In a Tray of 100)
units
N 25 → 75mA 40 V +40 V 40V Single Single 60 Ω Surface Mount SOT-23 3 - - 3.05 x 2.54 x 1.02mm
RS Stock No. 122-0136
Mfr. Part No.MMBFJ310LT3G
TWD3.90
Each (On a Reel of 10000)
units
N 24 → 60mA 25 V - - Single Single - Surface Mount SOT-23 3 - 5pF 3.04 x 1.4 x 1.01mm
RS Stock No. 625-5723
Mfr. Part No.MMBF4391LT1G
TWD15.00
Each (In a Pack of 5)
units
N 50 → 150mA 30 V +30 V 30V Single Single 30 Ω Surface Mount SOT-23 3 - - 2.9 x 1.3 x 0.94mm
RS Stock No. 545-213
Mfr. Part No.2SK3666-3-TB-E
BrandSanyo
TWD6.00
Each (In a Pack of 25)
units
N - 30 V - -30V Single - 200 Ω Surface Mount CP 3 1.1pF 4pF 2.9 x 1.5 x 1.1mm
RS Stock No. 807-5201
Mfr. Part No.BSR58
TWD4.40
Each (In a Pack of 100)
units
N 8 → 80mA 0.4 V -40 V 40V Single Single - Surface Mount SOT-23 3 - - 2.9 x 1.3 x 0.97mm
RS Stock No. 166-3077
Mfr. Part No.MMBF4093
TWD2.70
Each (On a Reel of 3000)
units
N Min. 8mA 0.2 V -40 V 40V Single Single 80 Ω Surface Mount SOT-23 3 - - 2.92 x 1.3 x 0.93mm
RS Stock No. 806-4302
Mfr. Part No.MMBFJ110
TWD12.50
Each (In a Pack of 25)
units
N Min. 10mA 15 V -25 V 25V Single Single 18 Ω Surface Mount SOT-23 3 85pF 85pF 2.92 x 1.4 x 0.94mm
RS Stock No. 626-2311
Mfr. Part No.BF513,215
BrandNXP
TWD11.60
Each (In a Pack of 10)
units
N 10 → 18mA 20 V - 20V Single Single - Surface Mount SOT-23 (TO-236AB) 3 - - 3 x 1.4 x 1mm
RS Stock No. 166-0535
Mfr. Part No.BF510,215
BrandNXP
TWD9.90
Each (On a Reel of 3000)
units
N 0.7 → 3.0mA 20 V - 20V Single Single - Surface Mount SOT-23 (TO-236AB) 3 - - 3 x 1.4 x 1mm
RS Stock No. 792-5173
Mfr. Part No.2SK932-23-TB-E
TWD12.20
Each (On a Tape of 25)
units
N 10 → 17mA 15 V - -15V Single Single - Surface Mount CP 3 10pF 3pF 2.9 x 1.5 x 1.1mm
RS Stock No. 749-8268
Mfr. Part No.DSK5J01R0L
BrandPanasonic
TWD13.80
Each (In a Pack of 20)
units
N 5 → 12mA - - -55V Single Single - Surface Mount SMini3 F2 B 3 - - 2 x 1.25 x 0.8mm
RS Stock No. 145-4162
Mfr. Part No.2SK3666-3-TB-E
TWD2.60
Each (On a Reel of 3000)
units
N 1.2 → 3mA 30 V - -30V Single Single 200 Ω Surface Mount CP 3 4pF 1.1pF 2.9 x 1.5 x 1.1mm
RS Stock No. 920-9928
Mfr. Part No.TF414T5G
TWD4.50
Each (In a Pack of 50)
units
N 0.05 → 0.13mA 40 V - -40V Single Single - Surface Mount SOT-883 3 0.7pF 0.3pF 1.07 x 0.67 x 0.41mm
RS Stock No. 806-4314
Mfr. Part No.MMBFJ176
TWD12.40
Each (On a Tape of 50)
units
P -2 → -25mA 15 V +30 V -30V Single Single 250 Ω Surface Mount SOT-23 3 - - 2.92 x 1.3 x 0.93mm
RS Stock No. 806-4263
Mfr. Part No.MMBF4119
TWD10.30
Each (On a Tape of 50)
units
N 0.2 → 0.6mA 10 V -40 V 40V Single Single - Surface Mount SOT-23 3 - - 2.92 x 1.3 x 0.93mm
RS Stock No. 484-2498
Mfr. Part No.BFR31,215
BrandNXP
TWD15.30
Each (In a Pack of 10)
units
N 1 → 5mA 25 V -25 V -25V Single Single - Surface Mount SOT-23 (TO-236AB) 3 - - 3 x 1.4 x 1mm
RS Stock No. 806-4311
Mfr. Part No.MMBFJ111
TWD9.20
Each (On a Tape of 50)
units
N 20mA 15 V -35 V 35V Single Single 30 Ω Surface Mount SOT-23 3 28pF 28pF 2.9 x 1.3 x 1.04mm
RS Stock No. 166-0536
Mfr. Part No.BF513,215
BrandNXP
TWD10.50
Each (On a Reel of 3000)
units
N 10 → 18mA 20 V - 20V Single Single - Surface Mount SOT-23 (TO-236AB) 3 - - 3 x 1.4 x 1mm