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.


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.



Looking for MOSFET Drivers?


...
Read more Read less

Filters

Viewing 61 - 80 of 11596 products
Results per page
Description Price Channel Type Maximum Continuous Drain Current Maximum Drain Source Voltage Maximum Drain Source Resistance Package Type Mounting Type Pin Count Maximum Gate Source Voltage Channel Mode Maximum Gate Threshold Voltage Minimum Gate Threshold Voltage Maximum Power Dissipation Transistor Configuration Number of Elements per Chip
RS Stock No. 178-0833
Mfr. Part No.IRF820APBF
BrandVishay
HK$6.59
Each (In a Tube of 50)
units
- - - - - - - - - - - - - -
RS Stock No. 751-4256
Mfr. Part No.DMP2305U-7
HK$0.922
Each (In a Pack of 100)
units
P 4.2 A 20 V 113 mΩ SOT-23 Surface Mount 3 -8 V, +8 V Enhancement 0.9V - 1.4 W Single 1
RS Stock No. 798-3003
Mfr. Part No.PSMN5R6-100PS,127
BrandNexperia
HK$16.00
Each (In a Pack of 2)
units
N 100 A 100 V 5.6 mΩ TO-220AB Through Hole 3 -20 V, +20 V Enhancement 4V 2V 306 W Single 1
RS Stock No. 541-1269
Mfr. Part No.IRFP140NPBF
BrandInfineon
HK$14.92
Each
units
N 33 A 100 V 52 mΩ TO-247AC Through Hole 3 -20 V, +20 V Enhancement 4V 2V 140 W Single 1
RS Stock No. 915-5027
Mfr. Part No.IRFR8314TRPBF
BrandInfineon
HK$7.946
Each (In a Pack of 10)
units
N 179 A 30 V 3.1 mΩ DPAK (TO-252) Surface Mount 3 -20 V, +20 V Enhancement 2.2V 1.2V 125 W Single 1
RS Stock No. 145-5453
Mfr. Part No.FQPF9P25
HK$8.347
Each (In a Tube of 50)
units
P 3.9 A 250 V 620 mΩ TO-220F Through Hole 3 -30 V, +30 V Enhancement - 3V 50 W Single 1
RS Stock No. 178-0840
Mfr. Part No.IRFBC30PBF
BrandVishay
HK$8.987
Each (In a Tube of 50)
units
N 3.6 A 600 V 2.2 Ω TO-220AB Through Hole 3 -20 V, +20 V Enhancement - 2V 74 W Single 1
RS Stock No. 904-7345
Mfr. Part No.C2M1000170D
BrandWolfspeed
HK$44.02
Each
units
N 5 A 1700 V 1.4 Ω TO-247 Through Hole 3 -5 V, +20 V Enhancement 3.1V 2.4V 69 W Single 1
RS Stock No. 761-0499
Mfr. Part No.STF9NK90Z
HK$19.09
Each
units
N 8 A 900 V 1.3 Ω TO-220FP Through Hole 3 -30 V, +30 V Enhancement 4.5V 3V 40 W Single 1
RS Stock No. 168-7961
Mfr. Part No.TK17A65W,S5X(M
BrandToshiba
HK$22.199
Each (In a Tube of 50)
units
N 17 A 650 V 200 mΩ TO-220SIS Through Hole 3 -30 V, +30 V Enhancement 3.5V - 45 W Single 1
RS Stock No. 919-4902
Mfr. Part No.IRFP140NPBF
BrandInfineon
HK$10.694
Each (In a Tube of 25)
units
N 33 A 100 V 52 mΩ TO-247AC Through Hole 3 -20 V, +20 V Enhancement 4V 2V 140 W Single 1
RS Stock No. 807-5923
Mfr. Part No.FQPF9P25
HK$9.904
Each (In a Pack of 5)
units
P 3.9 A 250 V 620 mΩ TO-220F Through Hole 3 -30 V, +30 V Enhancement - 3V 50 W Single 1
RS Stock No. 688-7005
Mfr. Part No.IRFP4321PBF
BrandInfineon
HK$31.88
Each (In a Pack of 2)
units
N 78 A 150 V 16 mΩ TO-247AC Through Hole 3 -30 V, +30 V Enhancement 5V 3V 310 W Single 1
RS Stock No. 827-6154
Mfr. Part No.TK17A65W,S5X(M
BrandToshiba
HK$18.055
Each (In a Pack of 2)
units
N 17 A 650 V 200 mΩ TO-220SIS Through Hole 3 -30 V, +30 V Enhancement 3.5V - 45 W Single 1
RS Stock No. 542-9412
Mfr. Part No.IRF820APBF
BrandVishay
HK$14.06
Each
units
N 2.5 A 500 V 3 Ω TO-220AB Through Hole 3 -30 V, +30 V Enhancement - 2V 50 W Single 1
RS Stock No. 825-9106
Mfr. Part No.IPG20N04S4L11ATMA1
BrandInfineon
HK$6.897
Each (In a Pack of 20)
units
N 20 A 40 V 15.5 mΩ TDSON Surface Mount 8 -16 V, +16 V Enhancement 2.2V 1.2V 41 W Isolated 2
RS Stock No. 168-7545
Mfr. Part No.STF9NK90Z
HK$20.017
Each (In a Tube of 50)
units
N 8 A 900 V 1.3 Ω TO-220FP Through Hole 3 -30 V, +30 V Enhancement 4.5V 3V 40 W Single 1
RS Stock No. 542-9507
Mfr. Part No.IRFBC30PBF
BrandVishay
HK$11.79
Each
units
N 3.6 A 600 V 2.2 Ω TO-220AB Through Hole 3 -20 V, +20 V Enhancement - 2V 74 W Single 1
RS Stock No. 165-8287
Mfr. Part No.IRFR8314TRPBF
BrandInfineon
HK$4.60
Each (On a Reel of 2000)
units
N 179 A 30 V 3.1 mΩ DPAK (TO-252) Surface Mount 3 -20 V, +20 V Enhancement 2.2V 1.2V 125 W Single 1
RS Stock No. 756-0382
Mfr. Part No.3SK294(TE85L,F)
BrandToshiba
HK$1.845
Each (In a Pack of 10)
units
N 30 mA 12.5 V - USQ Surface Mount 4 -8 V, +8 V Depletion 1.5V - 100 mW Single 1
Related Products
The single throw types have 3mm contact separationElectrical ...
Description:
The single throw types have 3mm contact separationElectrical life: >104 operations at full loadMaximum operating temperature: +90°CConnection is by 4.8´0.8mm blade terminalsDimensions: H21, W15 (SP), W24 (DP), depth behind panel 12.5 (19.9 with terminals), max. panel thickness 3 mm.
A fully approved double pole rocker switchFits into ...
Description:
A fully approved double pole rocker switchFits into the space traditionally required for a single pole switchDPST silver contactsConnection via 6·3mm faston connectors>3mm contact gapNylon 66 94 V-2.
Marquardt 1800 series single and double pole rocker ...
Description:
Marquardt 1800 series single and double pole rocker switches. The long life 1800 rocker switches are suitable for use in Class II appliances and are available in a choice of styles that includes non illuminated, fully illuminated red, amber or ...
Marquardt 1858 series of miniature double pole single ...
Description:
Marquardt 1858 series of miniature double pole single throw rocker switches. The non illuminated 1858 rocker switches are suitable for use in Class II appliances and are available in a choice of PCB mount or 4.8mm Faston/Quick Connect style tab ...