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MOSFETs
MOSFETs, also known as MOSFET transistors, stands for ’Metal Oxide Semiconductor Field-Effect Transistors’. MOSFETs are transistor devices which are controlled by a capacitor. The “Field-Effect” means that they are controlled by voltage. The aim of a MOSFET is to control the flow of the current passing through from the source to the drain terminals. It acts very similarly to a switch and is used for switching or amplifying electronic signals. These semiconductor devices are ICs (integrated circuits) which are mounted onto PCBs. MOSFETs come in a range of standard package types such as DPAK, D2PAK, DFN, I2PAK, SOIC, SOT-223 and TO-220. For more information about MOSFETs, please see our complete guide to MOSFETs.
What are depletion and enhancement modes?
MOSFET transistors have two modes; depletion and enhancement. Depletion MOSFETs work like a closed switch. The current passes through when no current is applied. The current flow will stop if a negative voltage is applied. Enhancement mode MOSFETs are similar to a variable resistor and are generally more popular than the depletion mode MOSFETs. They come in n-channel or p-channel variants.
How do MOSFETs work?
The pins on a MOSFET package are the Source, Gate and Drain. When a voltage is applied between the Gate and the Source terminals, current can pass through from the Drain to the Source pins. When the voltage applied to the Gate changes, the resistance from the Drain to the Source will change too. The lower the voltage applied, the higher the resistance. As the voltage increases, the resistance from the Drain to Source will decrease. Power MOSFETs are similar to standard MOSFETs but they are designed to handle a higher level of power.
N-Channel vs. P-Channel MOSFETs
MOSFETs are made of p-type or n-type doped silicon. N-Channel MOSFETS contain additional electrons which are free to move around. They are the more popular channel type. N-Channel MOSFETs work when a positive charge is applied to the gate terminal. P-Channel MOSFETS substrate contains electrons and electron holes. P-Channel MOSFETs are connected to a positive voltage. These MOSFETs turn on when the voltage supplied to the Gate terminal is lower than the Source voltage.
Where are MOSFETs used?
MOSFETs are found within many applications, such as microprocessors and other memory components. MOSFET transistors are most commonly used as a voltage-controlled switch within circuits.
Showing 1–24 of 367 results
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30V 4A N-CH MOSFET TRANS SOT-23
VND374,112.54Pack (1 Pack of 50) -
AUTOMOTIVE N-CHANNEL 60 V (D-S) 175 C MO
VND511,003.34Reel (1 Reel of 50) -
AUTOMOTIVE N-CHANNEL 60 V (D-S)175C MOS
VND299,824.24Pack (1 Pack of 25) -
E SERIES POWER MOSFET IPAK (TO-251), 144
VND248,573.66Pack (1 Pack of 5) -
FET 60V 5.0 OHM TO92
VND334,213.88Pack (1 Pack of 100) -
FET, NXP, NX3008NBK
VND320,858.68Reel (1 Reel of 150) -
HEXFET N-CH MOSFET 33A 100V D2PAK
VND280,960.02Pack (1 Pack of 10) -
HEXFET N-CH MOSFET 3A 50V SOIC8
VND32,651,126.84Reel (1 Reel of 4000) -
HEXFET N-CH MOSFET 4.9A 30V SOIC8
VND359,421.82Pack (1 Pack of 20) -
HEXFET N-CH MOSFET 51A 150V TO-220AB
VND359,421.82Pack (1 Pack of 5) -
HEXFET N-CH MOSFET 7.3A 30V SOIC8
VND316,184.36Reel (1 Reel of 20) -
HEXFET N-CH MOSFET 72A 100V TO-247AC
VND342,227.00Pack (1 Pack of 5) -
HEXFET N-CH MOSFET 84A 60V TO-220AB
VND307,336.54Tube (1 Tube of 10) -
HEXFET N-CH MOSFET 89A 75V TO-220AB
VND343,896.40Pack (1 Pack of 10) -
HEXFET N-CH MOSFET 99A 60V DPAK
VND393,310.64Pack (1 Pack of 10) -
HEXFET P-CH MOSFET 11A 55V DPAK
VND378,786.86Reel (1 Reel of 20) -
HF/VHF DMOS TRANSISTOR 150W 50V M174
VND1,840,847.38 -
HV MOSFET N-CH 600V 11A TO-220F
VND274,616.30Tube (1 Tube of 10) -
IMW120R030M1HXKSA1
VND14,940,128.36Tube (1 Tube of 30) -
-20.1%
MOSFET 300V 192A POLAR3 HIPERFET SOT227B
VND823,681.96VND657,743.60 -
MOSFET 300V 210A POLAR3 HIPERFET PLUS264
VND11,627,704.88Tube (1 Tube of 25) -
MOSFET 360A 150V SOT227
VND1,004,978.80 -
MOSFET 360A 150V SOT227
VND9,226,773.80Tube (1 Tube of 10) -
MOSFET 40V SO-8FL
VND13,346,853.00Reel (1 Reel of 1500)
