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 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. 215-6688
Mfr. Part No.BS250P
€0.738
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P 230 mA 45 V 14 Ω E-Line 3.5V Through Hole - 3 -20 V, +20 V Enhancement 700 mW Single 1
RS Stock No. 922-7831
Mfr. Part No.BS250P
€0.339
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P 230 mA 45 V 14 Ω E-Line 3.5V Through Hole - 3 -20 V, +20 V Enhancement 700 mW Single 1
RS Stock No. 823-3217
Mfr. Part No.DMG4822SSD-13
€0.445
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N 10 A 30 V 31 mΩ SOIC 3V Surface Mount - 8 -25 V, +25 V Enhancement 1.42 W Isolated 2
RS Stock No. 154-958
Mfr. Part No.ZXM61N02FTA
€0.362
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N 1.7 A 20 V 180 mΩ SOT-23 - Surface Mount 0.7V 3 -12 V, +12 V Enhancement 806 mW Single 1
RS Stock No. 122-3272
Mfr. Part No.DMG4435SSS-13
€0.187
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P 10 A 30 V 29 mΩ SOIC 2.5V Surface Mount - 8 -25 V, +25 V Enhancement 2.5 W Single 1
RS Stock No. 922-7611
Mfr. Part No.ZXM61N02FTA
€0.176
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N 1.7 A 20 V 180 mΩ SOT-23 - Surface Mount 0.7V 3 -12 V, +12 V Enhancement 806 mW Single 1
RS Stock No. 823-3205
Mfr. Part No.DMG4435SSS-13
€0.385
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P 10 A 30 V 29 mΩ SOIC 2.5V Surface Mount - 8 -25 V, +25 V Enhancement 2.5 W Single 1
RS Stock No. 169-7463
Mfr. Part No.DMG4822SSD-13
€0.237
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N 10 A 30 V 31 mΩ SOIC 3V Surface Mount - 8 -25 V, +25 V Enhancement 1.42 W Isolated 2
RS Stock No. 275-973
Mfr. Part No.ZVP3306FTA
€0.594
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P 90 mA 60 V 14 Ω SOT-23 3.5V Surface Mount - 3 -20 V, +20 V Enhancement 330 mW Single 1
RS Stock No. 770-5175
Mfr. Part No.DMP4015SPS-13
€0.557
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P 11 A 40 V 15 mΩ POWERDI5060 2.5V Surface Mount - 8 -25 V, +25 V Enhancement 2.1 W Single 1
RS Stock No. 122-1424
Mfr. Part No.ZXMHC3F381N8TC
€0.399
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N, P 4.1 A, 4.98 A 30 V 60 mΩ, 80 mΩ SOIC 3V Surface Mount - 8 -20 V, +20 V Enhancement 1.35 W Full Bridge 4
RS Stock No. 122-1474
Mfr. Part No.DMP4015SPS-13
€0.295
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P 11 A 40 V 15 mΩ POWERDI5060 2.5V Surface Mount - 8 -25 V, +25 V Enhancement 2.1 W Single 1
RS Stock No. 922-7730
Mfr. Part No.ZVP3306FTA
€0.264
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P 90 mA 60 V 14 Ω SOT-23 3.5V Surface Mount - 3 -20 V, +20 V Enhancement 330 mW Single 1
RS Stock No. 823-4018
Mfr. Part No.DMN6040SSD-13
€0.163
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N 6.6 A 60 V 55 mΩ SOIC 3V Surface Mount - 8 -20 V, +20 V Enhancement 1.7 W Isolated 2
RS Stock No. 121-9628
Mfr. Part No.DMN6040SSD-13
€0.188
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N 6.6 A 60 V 55 mΩ SOIC 3V Surface Mount - 8 -20 V, +20 V Enhancement 1.7 W Isolated 2
RS Stock No. 751-5344
Mfr. Part No.ZXMHC3F381N8TC
€0.836
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N, P 4.1 A, 4.98 A 30 V 60 mΩ, 80 mΩ SOIC 3V Surface Mount - 8 -20 V, +20 V Enhancement 1.35 W Full Bridge 4
RS Stock No. 165-8875
Mfr. Part No.DMG4511SK4-13
€0.275
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N, P 9.3 A, 9.6 A 35 V 65 mΩ DPAK (TO-252) 3V Surface Mount - 3 -20 V, +20 V Enhancement 8.9 W Isolated 2
RS Stock No. 922-8011
Mfr. Part No.ZXMP4A16GTA
€0.342
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P 6.4 A 40 V 100 mΩ SOT-223 - Surface Mount 1V 3 + Tab -20 V, +20 V Enhancement 3.9 W Single 1
RS Stock No. 823-4034
Mfr. Part No.DMS3015SSS-13
€0.134
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N 11 A 30 V 14.9 mΩ SOIC 2.5V Surface Mount - 8 -20 V, +20 V Enhancement 1.55 W Single 1
RS Stock No. 263-857
Mfr. Part No.ZVN2106A
€0.578
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N 450 mA 60 V 2 Ω E-Line 2.4V Through Hole - 3 -20 V, +20 V Enhancement 700 mW Single 1