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 1083 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. 920-8773
Mfr. Part No.STP36NF06L
$1.037
Each (In a Tube of 50)
units
N 30 A 60 V 40 mΩ TO-220 Through Hole 3 -18 V, +18 V Enhancement 2.5V 1V 70 W Single 1
RS Stock No. 486-5671
Mfr. Part No.STP36NF06L
$2.212
Each (In a Pack of 5)
units
N 30 A 60 V 40 mΩ TO-220 Through Hole 3 -18 V, +18 V Enhancement 2.5V 1V 70 W Single 1
RS Stock No. 168-7549
Mfr. Part No.STQ3N45K3-AP
$0.349
Each (On a Tape of 2000)
units
N 600 mA 450 V 3.8 Ω TO-92 Through Hole 3 -30 V, +30 V Enhancement 4.5V 3V 2.5 W Single 1
RS Stock No. 761-0590
Mfr. Part No.STQ3N45K3-AP
$1.254
Each (In a Pack of 5)
units
N 600 mA 450 V 3.8 Ω TO-92 Through Hole 3 -30 V, +30 V Enhancement 4.5V 3V 2.5 W Single 1
RS Stock No. 876-5720
Mfr. Part No.STW56N60M2
$9.98
Each
units
N 52 A 650 V 55 mΩ TO-247 Through Hole 3 -25 V, +25 V Enhancement 4V 2V 350 W Single 1
RS Stock No. 486-2313
Mfr. Part No.STP4NK60ZFP
$1.782
Each (In a Pack of 5)
units
N 4 A 600 V 2 Ω TO-220FP Through Hole 3 -30 V, +30 V Enhancement 4.5V 3V 25 W Single 1
RS Stock No. 168-6215
Mfr. Part No.STP4NK60ZFP
$0.979
Each (In a Tube of 50)
units
N 4 A 600 V 2 Ω TO-220FP Through Hole 3 -30 V, +30 V Enhancement 4.5V 3V 25 W Single 1
RS Stock No. 168-8842
Mfr. Part No.STW56N60M2
$9.394
Each (In a Tube of 30)
units
N 52 A 650 V 55 mΩ TO-247 Through Hole 3 -25 V, +25 V Enhancement 4V 2V 350 W Single 1
RS Stock No. 920-8840
Mfr. Part No.STP75NF75
$2.029
Each (In a Tube of 50)
units
N 80 A 75 V 11 mΩ TO-220 Through Hole 3 -20 V, +20 V Enhancement 4V 2V 300 W Single 1
RS Stock No. 792-5701
Mfr. Part No.STB36NM60ND
$9.56
Each
units
N 29 A 600 V 110 mΩ D2PAK (TO-263) Surface Mount 3 -25 V, +25 V Enhancement 5V 3V 190 W Single 1
RS Stock No. 168-7485
Mfr. Part No.STP11NM60ND
$2.858
Each (In a Tube of 50)
units
N 10 A 600 V 450 mΩ TO-220 Through Hole 3 -25 V, +25 V Enhancement 5V 3V 90 W Single 1
RS Stock No. 786-3647
Mfr. Part No.STF18N60M2
$2.668
Each (In a Pack of 5)
units
N 13 A 650 V 280 mΩ TO-220FP Through Hole 3 -25 V, +25 V Enhancement 4V 2V 25 W Single 1
RS Stock No. 168-7079
Mfr. Part No.STB36NM60ND
$5.269
Each (On a Reel of 1000)
units
N 29 A 600 V 110 mΩ D2PAK (TO-263) Surface Mount 3 -25 V, +25 V Enhancement 5V 3V 190 W Single 1
RS Stock No. 760-9982
Mfr. Part No.STP11NM60ND
$5.37
Each
units
N 10 A 600 V 450 mΩ TO-220 Through Hole 3 -25 V, +25 V Enhancement 5V 3V 90 W Single 1
RS Stock No. 485-7844
Mfr. Part No.STP75NF75
$2.94
Each
units
N 80 A 75 V 11 mΩ TO-220 Through Hole 3 -20 V, +20 V Enhancement 4V 2V 300 W Single 1
RS Stock No. 920-8745
Mfr. Part No.STP6NK60Z
$0.842
Each (In a Tube of 50)
units
N 6 A 600 V 1.2 Ω TO-220 Through Hole 3 -30 V, +30 V Enhancement 4.5V 3V 110 W Single 1
RS Stock No. 485-7838
Mfr. Part No.STP6NK60Z
$2.602
Each (In a Pack of 5)
units
N 6 A 600 V 1.2 Ω TO-220 Through Hole 3 -30 V, +30 V Enhancement 4.5V 3V 110 W Single 1
RS Stock No. 168-6985
Mfr. Part No.STF18N60M2
$2.42
Each (In a Tube of 50)
units
N 13 A 650 V 280 mΩ TO-220FP Through Hole 3 -25 V, +25 V Enhancement 4V 2V 25 W Single 1
RS Stock No. 687-5175
Mfr. Part No.STB10NK60ZT4
$4.186
Each (In a Pack of 5)
units
N 10 A 600 V 750 mΩ D2PAK (TO-263) Surface Mount 3 -30 V, +30 V Enhancement 4.5V 3V 115 W Single 1
RS Stock No. 165-7787
Mfr. Part No.STB10NK60ZT4
$1.141
Each (On a Reel of 1000)
units
N 10 A 600 V 750 mΩ D2PAK (TO-263) Surface Mount 3 -30 V, +30 V Enhancement 4.5V 3V 115 W Single 1