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. For more information about MOSFETs, please see our complete guide to MOSFETs.

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 like 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 like standard MOSFETs but they are designed to handle a higher level of power.

N-Channel vs. P-Channel MOSFETs

N-Channel MOSFETs contain additional electrons which are free to move around. They are a 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.


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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. 159-6516
Mfr. Part No.IRFP460BPBF
BrandVishay
£2.323
Each (In a Tube of 25)
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N 20 A 500 V 250 mΩ TO-247AC Through Hole 3 -20 V, +20 V Enhancement - 2V 278 W Single 1
RS Stock No. 787-9140
Mfr. Part No.IRFP460BPBF
BrandVishay
£2.78
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N 20 A 500 V 250 mΩ TO-247AC Through Hole 3 -20 V, +20 V Enhancement - 2V 278 W Single 1
RS Stock No. 178-0835
Mfr. Part No.IRF840APBF
BrandVishay
£1.167
Each (In a Tube of 50)
Units
- - - - - - - - - - - - - -
RS Stock No. 542-9440
Mfr. Part No.IRF840APBF
BrandVishay
£1.42
Each
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N 8 A 500 V 850 mΩ TO-220AB Through Hole 3 -30 V, +30 V Enhancement - 2V 125 W Single 1
RS Stock No. 708-5134
Mfr. Part No.IRF510PBF
BrandVishay
£0.644
Each (In a Pack of 10)
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N 5.6 A 100 V 540 mΩ TO-220AB Through Hole 3 -20 V, +20 V Enhancement - 2V 43 W Single 1
RS Stock No. 919-0023
Mfr. Part No.IRF510PBF
BrandVishay
£0.625
Each (In a Tube of 50)
Units
N 5.6 A 100 V 540 mΩ TO-220AB Through Hole 3 -20 V, +20 V Enhancement - 2V 43 W Single 1
RS Stock No. 178-0917
Mfr. Part No.IRFD9120PBF
BrandVishay
£0.52
Each (In a Tube of 100)
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- - - - - - - - - - - - - -
RS Stock No. 541-0553
Mfr. Part No.IRFD9120PBF
BrandVishay
£0.80
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P 1 A 100 V 600 mΩ HVMDIP Through Hole 4 -20 V, +20 V Enhancement - 2V 1.3 W Single 1
RS Stock No. 178-0786
Mfr. Part No.IRFP9240PBF
BrandVishay
£2.076
Each (In a Tube of 25)
Units
- - - - - - - - - - - - - -
RS Stock No. 768-9332
Mfr. Part No.SiHG47N60E-GE3
BrandVishay
£7.93
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N 47 A 600 V 64 mΩ TO-247AC Through Hole 3 -20 V, +20 V Enhancement - 2V 357 W Single 1
RS Stock No. 541-0862
Mfr. Part No.IRFP9240PBF
BrandVishay
£2.42
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Units
P 12 A 200 V 500 mΩ TO-247AC Through Hole 3 -20 V, +20 V Enhancement - 2V 150 W Single 1
RS Stock No. 165-2835
Mfr. Part No.SIHG47N60E-GE3
BrandVishay
£6.833
Each (In a Tube of 25)
Units
N 47 A 600 V 64 mΩ TO-247AC Through Hole 3 -20 V, +20 V Enhancement - 2V 357 W Single 1
RS Stock No. 815-2679
Mfr. Part No.IRF9Z10PBF
BrandVishay
£1.111
Each (In a Pack of 10)
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P 4.7 A 60 V 500 mΩ TO-220AB Through Hole 3 -20 V, +20 V Enhancement - 2V 43 W Single 1
RS Stock No. 542-9434
Mfr. Part No.IRF830APBF
BrandVishay
£1.17
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N 5 A 500 V 1.4 Ω TO-220AB Through Hole 3 -30 V, +30 V Enhancement - 2V 74 W Single 1
RS Stock No. 178-0834
Mfr. Part No.IRF830APBF
BrandVishay
£0.949
Each (In a Tube of 50)
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- - - - - - - - - - - - - -
RS Stock No. 145-1871
Mfr. Part No.IRF9Z10PBF
BrandVishay
£1.111
Each (In a Tube of 50)
Units
P 4.7 A 60 V 500 mΩ TO-220AB Through Hole 3 -20 V, +20 V Enhancement - 2V 43 W Single 1
RS Stock No. 708-5143
Mfr. Part No.IRF540PBF
BrandVishay
£1.368
Each (In a Pack of 5)
Units
N 28 A 100 V 77 mΩ TO-220AB Through Hole 3 -20 V, +20 V Enhancement - 2V 150 W Single 1
RS Stock No. 178-0891
Mfr. Part No.SIHG70N60EF-GE3
BrandVishay
£9.178
Each (In a Tube of 50)
Units
N 70 A 600 V 38 mΩ TO-247AC Through Hole 3 -30 V, +30 V Enhancement - 2V 520 W Single 1
RS Stock No. 919-0020
Mfr. Part No.IRF540PBF
BrandVishay
£1.167
Each (In a Tube of 50)
Units
N 28 A 100 V 77 mΩ TO-220AB Through Hole 3 -20 V, +20 V Enhancement - 2V 150 W Single 1
RS Stock No. 903-4475
Mfr. Part No.SiHG70N60EF-GE3
BrandVishay
£10.43
Each
Units
N 70 A 600 V 38 mΩ TO-247AC Through Hole 3 -30 V, +30 V Enhancement - 2V 520 W Single 1