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 transistor
N-Channel JFET Construction
The 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 Construction
The 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 noise
What are they also known as?
JUGFET
What 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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กำลังดูสินค้า 1 - 19 รายการจาก 19 รายการ / Viewing 1 - 19 of 19 products
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รายละเอียดสินค้า / Description ราคา / 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. 103-8162
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.PMBFJ177,215
Brand :NXP
THB4.08
Each (On a Reel of 3000)
Units
P 1.5 → 20mA 30 V +30 V 30V Single Single 300 Ω Surface Mount SOT-23 (TO-236AB) 3 - - 3 x 1.4 x 1mm
RS Stock No. 112-5510
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.PMBFJ177,215
Brand :NXP
THB10.908
Each: (In a Pack of 5)
Units
P 1.5 → 20mA 30 V +30 V 30V Single Single 300 Ω Surface Mount SOT-23 3 - - 3 x 1.4 x 1mm
RS Stock No. 166-0548
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.PMBFJ308,215
Brand :NXP
THB3.256
Each (On a Reel of 3000)
Units
N 12 → 60mA 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. 626-3308
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.PMBFJ308,215
Brand :NXP
THB4.41
Each: (In a Pack of 10)
Units
N 12 → 60mA 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. 124-2284
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.BF861C,215
Brand :NXP
THB9.598
Each (On a Reel of 3000)
Units
N 12 → 25mA 25 V -25 V, +25 V 25V Single Single - Surface Mount SOT-23 (TO-236AB) 3 - - 3 x 1.4 x 1mm
RS Stock No. 626-2412
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.BF861C,215
Brand :NXP
THB22.042
Each: (In a Pack of 10)
Units
N 12 → 25mA 25 V +25 V 25V Single Single - Surface Mount SOT-23 (TO-236AB) 3 - - 3 x 1.4 x 1mm
RS Stock No. 166-0547
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.PMBF4391,215
Brand :NXP
THB3.641
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. 626-3229
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.PMBF4391,215
Brand :NXP
THB8.663
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. 166-0536
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.BF513,215
Brand :NXP
THB10.08
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
RS Stock No. 166-0537
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.BF556A,215
Brand :NXP
THB10.399
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. 179-1061
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.PMBFJ309,215
Brand :NXP
THB4.131
Each (On a Reel of 3000)
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. 626-2311
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.BF513,215
Brand :NXP
THB22.55
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. 626-2327
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.BF545A,215
Brand :NXP
THB16.967
Each: (In a Pack of 10)
Units
N 2.0 → 6.5mA 30 V -30 V -30V Single Single - Surface Mount SOT-23 (TO-236AB) 3 - - 3 x 1.4 x 1mm
RS Stock No. 626-3314
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.PMBFJ309,215
Brand :NXP
THB9.639
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. 166-0535
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.BF510,215
Brand :NXP
THB9.48
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. 626-2282
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.BF510,215
Brand :NXP
THB21.256
Each: (In a Pack of 10)
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. 112-4185
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.PMBF4393,215
Brand :NXP
THB12.36
Each
Units
N 50 → 150mA 40 V -40 V 40V Single Single 100 Ω Surface Mount SOT-23 3 - - 3 x 1.4 x 1mm
RS Stock No. 103-8160
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.PMBF4393,215
Brand :NXP
THB12.70
Each (On a Reel of 3000)
Units
N 50 → 150mA 40 V -40 V 40V Single Single 100 Ω Surface Mount SOT-23 (TO-236AB) 3 - - 3 x 1.4 x 1mm
RS Stock No. 626-2355
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.BF556A,215
Brand :NXP
THB20.805
Each: (In a Pack of 10)
Units
N 3 → 7mA 30 V -30 V -30V Single Single - Surface Mount SOT-23 (TO-236AB) 3 - - 3 x 1.4 x 1mm