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 1 - 20 of 107 products
Results per page
Description Price Channel Type Maximum Continuous Drain Current Maximum Drain Source Voltage Maximum Drain Source Resistance Maximum Gate Threshold Voltage Minimum Gate Threshold Voltage Maximum Gate Source Voltage Package Type Mounting Type Pin Count Transistor Configuration Channel Mode Maximum Power Dissipation Automotive Standard
RS Stock No. 873-1156
Mfr. Part No.IRF520PBF
$1.40
Each (In a Pack of 50)
units
N 9.2 A 100 V 270 mΩ - 2V -20 V, +20 V TO-220AB Through Hole 3 Single Enhancement 60 W -
RS Stock No. 173-4017
Mfr. Part No.IRF520PBF
$1.744
Each (On a Reel of 1000)
units
N 9.2 A 100 V 270 mΩ - 2V -20 V, +20 V TO-220AB Through Hole 3 Single Enhancement 60 W -
RS Stock No. 178-3691
Mfr. Part No.SIRC06DP-T1-GE3
$2.263
Each (On a Reel of 3000)
units
N 60 A 30 V 4 mΩ 1V 2.1V -16 V, +20 V SO-8 Surface Mount 8 Single Enhancement 50 W -
RS Stock No. 178-3704
Mfr. Part No.SiZF906ADT-T1-GE3
$1.20
Each (On a Reel of 3000)
units
N 60 A 30 V 5 mΩ 1.1V 2.2V -16 V, +20 V PowerPAIR 6 x 5 Surface Mount 8 - Enhancement 83 W -
RS Stock No. 178-3726
Mfr. Part No.SQS944ENW-T1_GE3
$0.725
Each (On a Reel of 3000)
units
N 6 A 40 V 40 mΩ 2.5V 1.5V ±20 V 1212 Surface Mount 8 - Enhancement 27.8 W AEC-Q101
RS Stock No. 178-3705
Mfr. Part No.SIZF916DT-T1-GE3
$1.375
Each (On a Reel of 3000)
units
N 40 (Channnel 1) A, 60 (Channel 2) A 30 V 6 mΩ 1.1V 2.4V -16 (Channnel 1) V, -12 (Channel 2) V, +16 (Channel 2) V, +20 (Channnel 1) V PowerPAIR 6 x 5 Surface Mount 8 - Enhancement 26.6 (Channnel 1) W, 60 (Channel 2) W -
RS Stock No. 178-3727
Mfr. Part No.SQS966ENW-T1_GE3
$0.725
Each (On a Reel of 3000)
units
N 6 A 60 V 60 mΩ 2.5V 1.5V ±20 V 1212 Surface Mount 8 - Enhancement 27.8 W AEC-Q101
RS Stock No. 178-3685
Mfr. Part No.SiR108DP-T1-RE3
$1.30
Each (On a Reel of 3000)
units
N 45 A 100 V 10 mΩ 2V 3.6V ±20 V SO-8 Surface Mount 8 Single Enhancement 65.7 W -
RS Stock No. 178-3692
Mfr. Part No.SiS106DN-T1-GE3
$0.80
Each (On a Reel of 3000)
units
N 16 A 60 V 20 mΩ 2V 4V ±20 V 1212 Surface Mount 8 Single Enhancement 24 W -
RS Stock No. 178-3709
Mfr. Part No.SQA401EEJ-T1_GE3
$0.363
Each (On a Reel of 3000)
units
P 2.68 A 20 V 200 mΩ 1.5V 0.6V ±8 V SC-70 Surface Mount 6 Single Enhancement 13.6 W AEC-Q101
RS Stock No. 178-3702
Mfr. Part No.SiZ348DT-T1-GE3
$0.85
Each (On a Reel of 3000)
units
N 30 A 30 V 10 mΩ 1V 2.4V -16 V, +20 V PowerPAIR 3 x 3 Surface Mount 8 - Enhancement 16.7 W -
RS Stock No. 178-3707
Mfr. Part No.SQ1464EEH-T1_GE3
$0.288
Each (On a Reel of 3000)
units
N 440 mA 60 V 3.1 Ω 0.45V 1V ±8 V SC-70 Surface Mount 6 Single Enhancement 430 mW AEC-Q101
RS Stock No. 178-3715
Mfr. Part No.SQD40031EL_GE3
$1.30
Each (On a Reel of 2000)
units
P 100 A 30 V 5 mΩ 2.5V 1.5V ±20 V TO-252 Surface Mount 3 + Tab Single Enhancement 136 W -
RS Stock No. 178-3693
Mfr. Part No.SiS110DN-T1-GE3
$0.45
Each (On a Reel of 3000)
units
N 14.2 A 100 V 70 mΩ 2V 4V ±20 V 1212 Surface Mount 8 Single Enhancement 24 W -
RS Stock No. 178-3865
Mfr. Part No.Si7172ADP-T1-RE3
$1.82
Each (In a Pack of 10)
units
N 17.2 A 200 V 80 mΩ 4V 2V ±20 V SO-8 Surface Mount 8 Single Enhancement 52 W -
RS Stock No. 178-3688
Mfr. Part No.SiRA10BDP-T1-GE3
$0.55
Each (On a Reel of 3000)
units
N 60 A 30 V 5 mΩ 1.2V 2.4V -16 V, +20 V SO-8 Surface Mount 8 Single Enhancement 43 W -
RS Stock No. 178-3901
Mfr. Part No.SiA106DJ-T1-GE3
$1.30
Each (In a Pack of 10)
units
N 12 A 60 V 20 mΩ 4V 2V ±20 V SC-70 Surface Mount 6 Single Enhancement 19 W -
RS Stock No. 178-3920
Mfr. Part No.SiSS12DN-T1-GE3
$1.78
Each (In a Pack of 10)
units
N 60 A 40 V 2 mΩ 1.1V 2.4V -16 V, +20 V 1212 Surface Mount 8 Single Enhancement 65.7 W -
RS Stock No. 178-3723
Mfr. Part No.SQM40016EM_GE3
$2.875
Each (On a Reel of 800)
units
N 250 A 40 V 1 mΩ 2.5V 3.5V ±20 V D2PAK (TO-263) Surface Mount 7 + Tab Single Enhancement 300 W AEC-Q101
RS Stock No. 178-3932
Mfr. Part No.SiZ348DT-T1-GE3
$1.75
Each (In a Pack of 10)
units
N 30 A 30 V 10 mΩ 1V 2.4V -16 V, +20 V PowerPAIR 3 x 3 Surface Mount 8 - Enhancement 16.7 W -