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. 166-0547
Mfr. Part No.PMBF4391,215
BrandNXP
£0.09
Each (On a Reel of 3000)
Units
N 50 → 150mA 40 V -40 V 40V Single Single 30 Ω Surface Mount SOT-23 3 - - 3 x 1.4 x 1mm
RS Stock No. 169-7868
Mfr. Part No.DSK5J01R0L
BrandPanasonic
£0.015
Each (On a Reel of 3000)
Units
N 5 → 12mA - - -55V Single Single - Surface Mount SMini3 F2 B 3 - - 2 x 1.25 x 0.8mm
RS Stock No. 166-2224
Mfr. Part No.MMBFJ270
£0.091
Each (On a Reel of 3000)
Units
P -2 → -15mA 15 V +30 V -30V Single Single - Surface Mount SOT-23 3 - - 2.9 x 1.3 x 1.04mm
RS Stock No. 626-3229
Mfr. Part No.PMBF4391,215
BrandNXP
£0.243
Each (In a Pack of 10)
Units
N 50 → 150mA 40 V -40 V 40V Single Single 30 Ω Surface Mount SOT-23 3 - - 3 x 1.4 x 1mm
RS Stock No. 163-0320
Mfr. Part No.TF414T5G
£0.061
Each (On a Reel of 8000)
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. 749-8268
Mfr. Part No.DSK5J01R0L
BrandPanasonic
£0.019
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. 166-0537
Mfr. Part No.BF556A,215
BrandNXP
£0.202
Each (On a Reel of 3000)
Units
N 3 → 7mA 30 V -30 V -30V 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
£0.26
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. 749-8265
Mfr. Part No.DSK5J01P0L
BrandPanasonic
£0.042
Each (In a Pack of 20)
Units
N 1 → 3mA - - -55V Single Single - Surface Mount SMini3 F2 B 3 - - 2 x 1.25 x 0.8mm
RS Stock No. 145-5192
Mfr. Part No.2SK3666-2-TB-E
£0.058
Each (On a Reel of 3000)
Units
N 0.6 → 1.5mA 30 V - -30V Single Single 200 Ω Surface Mount SOT-23 3 - - 2.9 x 1.5 x 1.1mm
RS Stock No. 806-4263
Mfr. Part No.MMBF4119
£0.229
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. 166-3094
Mfr. Part No.MMBFJ176
£0.096
Each (On a Reel of 3000)
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. 792-5167
Mfr. Part No.2SK3557-7-TB-E
£0.255
Each (In a Pack of 20)
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. 166-3082
Mfr. Part No.MMBF4119
£0.073
Each (On a Reel of 3000)
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. 806-4311
Mfr. Part No.MMBFJ111
£0.192
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. 163-2021
Mfr. Part No.2SK3557-7-TB-E
£0.102
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. 800-9364
Mfr. Part No.2SK3666-2-TB-E
£0.085
Each (In a Pack of 100)
Units
N 0.6 → 1.5mA 30 V - -30V Single Single 200 Ω Surface Mount SOT-23 3 - - 2.9 x 1.5 x 1.1mm
RS Stock No. 166-3093
Mfr. Part No.MMBFJ111
£0.066
Each (On a Reel of 3000)
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. 169-7867
Mfr. Part No.DSK5J01P0L
BrandPanasonic
£0.041
Each (On a Reel of 3000)
Units
N 1 → 3mA - - -55V Single Single - Surface Mount SMini3 F2 B 3 - - 2 x 1.25 x 0.8mm
RS Stock No. 163-2024
Mfr. Part No.2SK932-23-TB-E
£0.091
Each (On a Reel of 3000)
Units
N 10 → 17mA 15 V - -15V Single Single - Surface Mount CP 3 10pF 3pF 2.9 x 1.5 x 1.1mm
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