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. 145-5378
Mfr. Part No.FQPF85N06
$3.817
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N 53 A 60 V 10 mΩ TO-220F Through Hole 3 -25 V, +25 V Enhancement - 2V 62 W Single 1
RS Stock No. 146-2235
Mfr. Part No.TSM6968DCA RVG
$0.583
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N 6.5 A 20 V 22 mΩ TSSOP Surface Mount 8 -12 V, +12 V Enhancement 1V - 1.04 W Common Drain 2
RS Stock No. 172-3383
Mfr. Part No.NVMFD5C680NLWFT1G
$1.197
Each (In a Pack of 25)
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N 26 A 60 V 41 mΩ DFN Surface Mount 8 ±20 V Enhancement 2.2V 1.2V 19 W - 2
RS Stock No. 146-4669
Mfr. Part No.DMPH6050SPD-13
$0.891
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P 26 A 60 V 60 mΩ DI5060 Surface Mount 8 ±20 V Enhancement 3V 1V 1.5 W - 2
RS Stock No. 862-8750
Mfr. Part No.FQB11P06TM
$1.397
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P 11.4 A 60 V 175 mΩ D2PAK (TO-263) Surface Mount 3 -25 V, +25 V Enhancement - 2V 53 W Single 1
RS Stock No. 130-0998
Mfr. Part No.IRFS4010TRL7PP
BrandInfineon
$5.27
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N 190 A 100 V 4 mΩ D2PAK (TO-263) Surface Mount 7 + Tab -20 V, +20 V Enhancement 4V 2V 380 W - 1
RS Stock No. 688-7070
Mfr. Part No.IRFS3307ZPBF
BrandInfineon
$5.65
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N 120 A 75 V 6 mΩ D2PAK (TO-263) Surface Mount 3 -20 V, +20 V Enhancement 4V 2V 230 W Single 1
RS Stock No. 650-4407
Mfr. Part No.IRFR4105ZPBF
BrandInfineon
$1.74
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N 30 A 55 V 25 mΩ DPAK (TO-252) Surface Mount 3 -20 V, +20 V Enhancement 4V 2V 48 W Single 1
RS Stock No. 125-0547
Mfr. Part No.TK19A50W,S5X(M
BrandToshiba
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N 18.5 A 500 V 190 mΩ TO-220SIS Through Hole 3 -30 V, +30 V Enhancement 3.7V 2.7V 40 W - 1
RS Stock No. 124-6852
Mfr. Part No.SCT2120AFC
BrandROHM
$21.46
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N 29 A 650 V 156 mΩ TO-220AB Through Hole 3 -6 V, +22 V Enhancement 4V 1.6V 165 W - 1
RS Stock No. 124-6824
Mfr. Part No.RSM002N06T2L
BrandROHM
$0.377
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N 250 mA 60 V 12 Ω SOT-723 Surface Mount 3 -20 V, +20 V Enhancement 2.3V 1V 50 W - 1
RS Stock No. 195-2545
Mfr. Part No.NVMYS010N04CLTWG
$0.622
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N 38 A 40 V 17.6 mΩ LFPAK Surface Mount 4 ±20 V Enhancement 2V 1.2V 28 W Single 1
RS Stock No. 172-3319
Mfr. Part No.NVMFD5C470NLT1G
$0.608
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N 36 A 40 V 17.8 mΩ DFN Surface Mount 8 ±20 V Enhancement 2.2V 1.2V 24 W - 2
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RS Stock No. 216-9712
Mfr. Part No.TSM300NB06DCR
$0.601
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- 25 A 60 V 30 mΩ PDFN56 - 8 - Enhancement 4.5V - - - -
RS Stock No. 146-4868
Mfr. Part No.DMP6110SFDF-7
$0.566
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P 4.2 A 60 V 130 mΩ U-DFN2020 Surface Mount 6 ±20 V Enhancement 3V 1V 1.97 W Single 1
RS Stock No. 671-0643
Mfr. Part No.FDS6900AS
$2.30
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N 6.9 A, 8.2 A 30 V 22 mΩ, 27 mΩ SOIC Surface Mount 8 -20 V, +20 V Enhancement - 1V 2 W Series 2
RS Stock No. 168-6011
Mfr. Part No.IRFS4010TRL7PP
BrandInfineon
$2.73
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N 190 A 100 V 4 mΩ D2PAK (TO-263) Surface Mount 7 + Tab -20 V, +20 V Enhancement 4V 2V 380 W - 1
RS Stock No. 202-5713
Mfr. Part No.NTNS0K8N021ZTCG
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RS Stock No. 687-5190
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N 4 A 600 V 2 Ω D2PAK (TO-263) Surface Mount 3 -30 V, +30 V Enhancement 4.5V 3V 70 W Single 1
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N 910 mA 20 V 440 mΩ SC-88 Surface Mount 6 ±12 V Enhancement 1.5V 0.6V 550 mW - 2