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. 178-0808
Mfr. Part No.IRFP054PBF
BrandVishay
kr 28,63
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N 70 A 60 V 14 mΩ TO-247AC - Through Hole 2V 3 -20 V, +20 V Enhancement 230 W Single 1
RS Stock No. 815-2749
Mfr. Part No.IRFP054PBF
BrandVishay
kr 35,672
Each (In a Pack of 5)
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N 70 A 60 V 14 mΩ TO-247AC - Through Hole 2V 3 -20 V, +20 V Enhancement 230 W Single 1
RS Stock No. 178-0841
Mfr. Part No.IRFBC40PBF
BrandVishay
kr 12,995
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N 6.2 A 600 V 1.2 Ω TO-220AB - Through Hole 2V 3 -20 V, +20 V Enhancement 125 W Single 1
RS Stock No. 542-9513
Mfr. Part No.IRFBC40PBF
BrandVishay
kr 15,85
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N 6.2 A 600 V 1.2 Ω TO-220AB - Through Hole 2V 3 -20 V, +20 V Enhancement 125 W Single 1
RS Stock No. 170-8302
Mfr. Part No.SQD50N05-11L_GE3
BrandVishay
kr 6,148
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N 50 A 50 V 24 mΩ DPAK (TO-252) - Surface Mount 1.5V 3 -20 V, +20 V Enhancement 75 W Single 1
RS Stock No. 178-0790
Mfr. Part No.IRFP264PBF
BrandVishay
kr 36,251
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N 38 A 250 V 75 mΩ TO-247AC - Through Hole 2V 3 -20 V, +20 V Enhancement 280 W Single 1
RS Stock No. 919-0925
Mfr. Part No.SUM55P06-19L-E3
BrandVishay
kr 12,037
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P 55 A 60 V 19 mΩ D2PAK (TO-263) - Surface Mount 1V 3 -20 V, +20 V Enhancement 3.75 W Single 1
RS Stock No. 787-9493
Mfr. Part No.SQD50N05-11L_GE3
BrandVishay
kr 13,44
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N 50 A 50 V 24 mΩ DPAK (TO-252) - Surface Mount 1.5V 3 -20 V, +20 V Enhancement 75 W Single 1
RS Stock No. 178-0835
Mfr. Part No.IRF840APBF
BrandVishay
kr 12,038
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RS Stock No. 542-9462
Mfr. Part No.IRF9610PBF
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kr 14,66
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P 1.8 A 200 V 3 Ω TO-220AB - Through Hole 2V 3 -20 V, +20 V Enhancement 2 W Single 1
RS Stock No. 543-0478
Mfr. Part No.IRLD014PBF
BrandVishay
kr 8,57
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N 1.7 A 60 V 200 mΩ HVMDIP - Through Hole 1V 4 -10 V, +10 V Enhancement 1.3 W Single 1
RS Stock No. 178-0922
Mfr. Part No.IRLD014PBF
BrandVishay
kr 5,589
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N 1.7 A 60 V 200 mΩ HVMDIP - Through Hole 1V 4 -10 V, +10 V Enhancement 1.3 W Single 1
RS Stock No. 542-9787
Mfr. Part No.IRFP264PBF
BrandVishay
kr 39,48
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N 38 A 250 V 75 mΩ TO-247AC - Through Hole 2V 3 -20 V, +20 V Enhancement 280 W Single 1
RS Stock No. 178-0837
Mfr. Part No.IRF9610PBF
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kr 11,392
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RS Stock No. 710-5020
Mfr. Part No.SUM55P06-19L-E3
BrandVishay
kr 23,31
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P 55 A 60 V 19 mΩ D2PAK (TO-263) - Surface Mount 1V 3 -20 V, +20 V Enhancement 3.75 W Single 1
RS Stock No. 543-0046
Mfr. Part No.IRF610PBF
BrandVishay
kr 5,98
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N 3.3 A 200 V 1.5 Ω TO-220AB - Through Hole 2V 3 -20 V, +20 V Enhancement 36 W Single 1
RS Stock No. 178-0853
Mfr. Part No.IRF610PBF
BrandVishay
kr 4,514
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N 3.3 A 200 V 1.5 Ω TO-220AB - Through Hole 2V 3 -20 V, +20 V Enhancement 36 W Single 1
RS Stock No. 542-9440
Mfr. Part No.IRF840APBF
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N 8 A 500 V 850 mΩ TO-220AB - Through Hole 2V 3 -30 V, +30 V Enhancement 125 W Single 1
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N 19 A 30 V 8 mΩ PowerPAK SO - Surface Mount 1V 8 -20 V, +20 V Enhancement 4.8 W Single 1
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kr 27,52
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P 12 A 200 V 500 mΩ TO-247AC - Through Hole 2V 3 -20 V, +20 V Enhancement 150 W Single 1