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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RS-artikelnummer 879-3283
Tillv. art.nrVP2106N3-G
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3,718 kr
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P 250 mA 60 V 15 Ω TO-92 3.5V Through Hole - 3 -20 V, +20 V Enhancement 1 W Single 1
RS-artikelnummer 165-4218
Tillv. art.nrVP2106N3-G
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P 250 mA 60 V 15 Ω TO-92 3.5V Through Hole - 3 -20 V, +20 V Enhancement 1 W Single 1
RS-artikelnummer 916-3721
Tillv. art.nr2N7008-G
VarumärkeMicrochip
3,90 kr
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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-artikelnummer 170-4354
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RS-artikelnummer 165-4217
Tillv. art.nrVN2222LL-G
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3,059 kr
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N 230 mA 60 V 7.5 Ω TO-92 2.5V Through Hole - 3 -30 V, +30 V Enhancement 1 W Single 1
RS-artikelnummer 879-3274
Tillv. art.nrVN2222LL-G
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3,061 kr
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N 230 mA 60 V 7.5 Ω TO-92 2.5V Through Hole - 3 -30 V, +30 V Enhancement 1 W Single 1
RS-artikelnummer 912-5259
Tillv. art.nrLND01K1-G
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2,628 kr
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N 330 mA 9 V 1.4 Ω SOT-23 - Surface Mount - 5 -12 V, +0.6 V Depletion 360 mW Single 1
RS-artikelnummer 165-4216
Tillv. art.nrTP2104N3-G
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4,462 kr
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P 175 mA 40 V 10 Ω TO-92 2V Through Hole - 3 -20 V, +20 V Enhancement 740 mW Single 1
RS-artikelnummer 178-5338
Tillv. art.nrLND01K1-G
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2,586 kr
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N 330 mA 9 V 1.4 Ω SOT-23 - Surface Mount - 5 -12 V, +0.6 V Depletion 360 mW Single 1
RS-artikelnummer 829-3244
Tillv. art.nrDN2540N5-G
VarumärkeMicrochip
12,118 kr
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N 500 mA 400 V 25 Ω TO-220 3.5V Through Hole - 3 -20 V, +20 V Depletion 15 W Single 1
RS-artikelnummer 879-3270
Tillv. art.nrTP2104N3-G
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4,463 kr
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P 175 mA 40 V 10 Ω TO-92 2V Through Hole - 3 -20 V, +20 V Enhancement 740 mW Single 1
RS-artikelnummer 178-4924
Tillv. art.nrDN2540N5-G
VarumärkeMicrochip
10,123 kr
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N 500 mA 400 V 25 Ω TO-220 3.5V Through Hole - 3 -20 V, +20 V Depletion 15 W Single 1
RS-artikelnummer 177-9689
Tillv. art.nrTN0106N3-G
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6,129 kr
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N 350 mA 60 V 4.5 Ω TO-92 2V Through Hole 0.6V 3 20 V Enhancement 1 W Single 1
RS-artikelnummer 144-5876
Tillv. art.nrVN2410L-G
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6,777 kr
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- - - - TO-92 - Through Hole - 3 - - - - -
RS-artikelnummer 177-9742
Tillv. art.nrTN0110N3-G
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8,634 kr
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N 350 mA 100 V 4.5 Ω TO-92 2V Through Hole 0.6V 3 20 V Enhancement 1 W Single 1
RS-artikelnummer 177-9690
Tillv. art.nrTN0110N3-G
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7,245 kr
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N 350 mA 100 V 4.5 Ω TO-92 2V Through Hole 0.6V 3 20 V Enhancement 1 W Single 1
RS-artikelnummer 177-9706
Tillv. art.nrVN10KN3-G
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3,43 kr
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N 310 mA 60 V 7.5 Ω TO-92 2.5V Through Hole 0.8V 3 30 V Enhancement 1 W Single 1
RS-artikelnummer 177-9724
Tillv. art.nrVN2106N3-G
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2,879 kr
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N 300 mA 60 V 6 Ω TO-92 2.4V Through Hole 0.8V 3 20 V Enhancement 1 W Single 1
RS-artikelnummer 177-9691
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3,346 kr
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N 280 mA 60 V 5 Ω TO-236AB 2V Surface Mount 0.6V 3 20 V Enhancement 360 mW Single 1
RS-artikelnummer 170-4341
Tillv. art.nrDN2540N3-G
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5,565 kr
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