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.

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Description Price Channel Type Maximum Continuous Drain Current Maximum Drain Source Voltage Maximum Drain Source Resistance Package Type Maximum Gate Threshold Voltage Mounting Type Minimum Gate Threshold Voltage Pin Count Maximum Gate Source Voltage Channel Mode Maximum Power Dissipation Transistor Configuration Number of Elements per Chip
RS Stock No. 861-0670
Mfr. Part No.VN2410L-G
BrandMicrochip
kr 7,787
Each (In a Pack of 10)
Units
N 190 mA 240 V 10 Ω TO-92 2V Through Hole - 3 -20 V, +20 V Enhancement 1 W Single 1
RS Stock No. 144-5876
Mfr. Part No.VN2410L-G
BrandMicrochip
kr 6,534
Each (In a Bag of 1000)
Units
- - - - TO-92 - Through Hole - 3 - - - - -
RS Stock No. 829-3235
Mfr. Part No.DN2540N3-G
BrandMicrochip
kr 6,361
Each (In a Pack of 10)
Units
N 120 mA 400 V 25 Ω TO-92 3.5V Through Hole - 3 -20 V, +20 V Depletion 1 W Single 1
RS Stock No. 170-4342
Mfr. Part No.LND150N3-G
BrandMicrochip
kr 3,40
Each (In a Bag of 1000)
Units
- - - - - - - - - - - - - -
RS Stock No. 170-4341
Mfr. Part No.DN2540N3-G
BrandMicrochip
kr 5,366
Each (In a Bag of 1000)
Units
- - - - - - - - - - - - - -
RS Stock No. 916-3721
Mfr. Part No.2N7008-G
BrandMicrochip
kr 3,761
Each (In a Pack of 25)
Units
N 230 mA 60 V 7.5 Ω TO-92 2.5V Through Hole 1V 3 -30 V, +30 V Enhancement 1 W Single 1
RS Stock No. 829-3250
Mfr. Part No.LND150N3-G
BrandMicrochip
kr 4,023
Each (In a Pack of 20)
Units
N 30 mA 500 V 1 kΩ TO-92 3V Through Hole - 3 -20 V, +20 V Depletion 740 mW Single 1
RS Stock No. 170-4354
Mfr. Part No.2N7008-G
BrandMicrochip
kr 3,759
Each (In a Bag of 1000)
Units
- - - - - - - - - - - - - -
RS Stock No. 170-4348
Mfr. Part No.DN3545N3-G
BrandMicrochip
kr 5,008
Each (In a Bag of 1000)
Units
- - - - - - - - - - - - - -
RS Stock No. 177-9695
Mfr. Part No.TP2540N8-G
BrandMicrochip
kr 9,842
Each (On a Reel of 2000)
Units
P 125 mA 400 V 30 Ω TO-243AA 2.4V Surface Mount 1V 3 20 V Enhancement 1.6 W Single 1
RS Stock No. 829-3253
Mfr. Part No.LND150N8-G
BrandMicrochip
kr 5,284
Each (In a Pack of 20)
Units
N 30 mA 500 V 1 kΩ TO-243AA 3V Surface Mount - 4 -20 V, +20 V Depletion 1.6 W Single 1
RS Stock No. 178-4924
Mfr. Part No.DN2540N5-G
BrandMicrochip
kr 9,761
Each (In a Tube of 50)
Units
N 500 mA 400 V 25 Ω TO-220 3.5V Through Hole - 3 -20 V, +20 V Depletion 15 W Single 1
RS Stock No. 177-9709
Mfr. Part No.VP2450N8-G
BrandMicrochip
kr 10,744
Each (On a Reel of 2000)
Units
P 160 mA 500 V 35 Ω SOT-89 3.5V Surface Mount 1.5V 3 20 V Enhancement 1.6 W Single 1
RS Stock No. 177-2814
Mfr. Part No.DN2470K4-G
BrandMicrochip
kr 5,505
Each (On a Reel of 2000)
Units
N 170 mA 700 V 42 Ω TO-252 - Surface Mount - 4 20 V Depletion 2.5 W Single 2
RS Stock No. 829-3360
Mfr. Part No.DN3765K4-G
BrandMicrochip
kr 13,98
Each (In a Pack of 5)
Units
N 300 mA 650 V 8 Ω DPAK (TO-252) 3.5V Surface Mount - 3 -20 V, +20 V Depletion 2.5 W Single 1
RS Stock No. 177-2970
Mfr. Part No.DN2625K4-G
BrandMicrochip
kr 10,837
Each (In a Pack of 10)
Units
N 1.1 A 250 V 3.5 Ω TO-252 - Surface Mount - 4 20 V Depletion - Single 2
RS Stock No. 177-9707
Mfr. Part No.VN2106N3-G
BrandMicrochip
kr 2,776
Each (In a Bag of 1000)
Units
N 300 mA 60 V 6 Ω TO-92 2.4V Through Hole 0.8V 3 20 V Enhancement 1 W Single 1
RS Stock No. 165-4059
Mfr. Part No.MIC94053YC6-TR
BrandMicrochip
kr 4,302
Each (On a Reel of 3000)
Units
P 2 A 6 V 180 mΩ SOT-363 (SC-70) 1.2V Surface Mount 0.5V 6 -6 V Enhancement 270 mW Single 1
RS Stock No. 177-3358
Mfr. Part No.MIC94052YC6-TR
BrandMicrochip
kr 5,01
Each (In a Pack of 20)
Units
P 2 A 6 V 180 mΩ SC-70 1.2V Surface Mount 0.5V 6 -6 V - 270 mW Single 2
RS Stock No. 178-5275
Mfr. Part No.LND150N8-G
BrandMicrochip
kr 4,025
Each (On a Reel of 2000)
Units
N 30 mA 500 V 1 kΩ TO-243AA 3V Surface Mount - 4 -20 V, +20 V Depletion 1.6 W Single 1