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. 171-3663
Mfr. Part No.TSM60N380CI C0G
HK$20.538
Each (In a Pack of 5)
units
N 11 A 600 V 380 mΩ ITO-220S Through Hole 3 ±30 V Enhancement 4V 2V 33 W Single 1
RS Stock No. 169-8935
Mfr. Part No.TSM2302CX RFG
HK$0.996
Each (On a Reel of 3000)
units
N 2.8 A 20 V 65 mΩ SOT-23 Surface Mount 3 -8 V, +8 V Enhancement 1.2V - 900 mW Single 1
RS Stock No. 171-3673
Mfr. Part No.TSM7N90CZ C0G
HK$24.654
Each (In a Pack of 5)
units
N 7 A 900 V 1.9 Ω TO-220 Through Hole 3 ±30 V Enhancement 4V 2V 250 W Single 1
RS Stock No. 171-3665
Mfr. Part No.TSM10NC60CF C0G
HK$14.222
Each (In a Pack of 10)
units
N 10 A 650 V 750 mΩ ITO-220 Through Hole 3 ±30 V Enhancement 4.5V 2.5V 45 W Single 1
New
RS Stock No. 216-9654
Mfr. Part No.TSM033NB04LCR
HK$11.932
Each (In a Pack of 10)
units
- 121 A 40 V 3.3 mΩ PDFN56 - 8 - Enhancement 2.5V - - - -
RS Stock No. 171-3669
Mfr. Part No.TSM60NB600CI C0G
HK$11.525
Each (In a Pack of 10)
units
N 8 A 600 V 600 mΩ ITO-220S Through Hole 3 ±30 V Enhancement 4V 2V 32 W Single 1
RS Stock No. 171-3693
Mfr. Part No.TSM2303CX RFG
HK$1.555
Each (In a Pack of 100)
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P 1.3 A 30 V 300 mΩ SOT-23 Surface Mount 3 ±20 V Enhancement 3V 1V 700 mW Single 1
New
RS Stock No. 216-9691
Mfr. Part No.TSM150NB04CR
HK$2.559
Each (On a Reel of 2500)
units
- 41 A 40 V 15 mΩ PDFN56 - 8 - Enhancement 4V - - - -
RS Stock No. 171-3634
Mfr. Part No.TSM6N60CP ROG
HK$8.163
Each (On a Reel of 2500)
units
N 6 A 600 V 1.25 Ω TO-252 Surface Mount 3 + Tab ±30 V Enhancement 4V 2V 89 W Single 1
RS Stock No. 171-3686
Mfr. Part No.TSM650N15CS RLG
HK$10.154
Each (In a Pack of 10)
units
N 9 A 150 V 80 mΩ SOP Surface Mount 8 ±20 V Enhancement 4V 2V 12.5 W Single 1
New
RS Stock No. 216-9699
Mfr. Part No.TSM170N06PQ56
HK$2.355
Each (On a Reel of 2500)
units
- 44 A 60 V 17 mΩ PDFN56 - 8 - Enhancement 2.5V - - - -
RS Stock No. 171-3626
Mfr. Part No.TSM4NB60CI C0G
HK$4.589
Each (On a Reel of 1000)
units
N 4 A 600 V 2.5 mΩ ITO-220 Through Hole 3 ±30 V Enhancement 4.5V 2.5V 25 W Single 1
New
RS Stock No. 216-9704
Mfr. Part No.TSM220NB06LCR
HK$3.807
Each (In a Pack of 25)
units
- 35 A 60 V 22 mΩ PDFN56 - 8 - Enhancement 2.5V - - - -
New
RS Stock No. 216-9692
Mfr. Part No.TSM150NB04CR
HK$3.446
Each (In a Pack of 25)
units
- 41 A 40 V 15 mΩ PDFN56 - 8 - Enhancement 4V - - - -
New
RS Stock No. 216-9702
Mfr. Part No.TSM220NB06CR
HK$3.807
Each (In a Pack of 25)
units
- 35 A 60 V 22 mΩ PDFN56 - 8 - Enhancement 4V - - - -
RS Stock No. 171-3635
Mfr. Part No.TSM70N1R4CP ROG
HK$5.177
Each (On a Reel of 2500)
units
N 3.3 A 700 V 1.4 Ω TO-252 Surface Mount 3 + Tab ±30 V Enhancement 4V 2V 38 W Single 1
New
RS Stock No. 216-9700
Mfr. Part No.TSM170N06PQ56
HK$3.171
Each (In a Pack of 25)
units
- 44 A 60 V 17 mΩ PDFN56 - 8 - Enhancement 2.5V - - - -
New
RS Stock No. 216-9714
Mfr. Part No.TSM300NB06DCR
HK$4.288
Each (In a Pack of 25)
units
- 25 A 60 V 30 mΩ PDFN56 - 8 - Enhancement 4.5V - - - -
RS Stock No. 171-3627
Mfr. Part No.TSM4NB60CP ROG
HK$3.193
Each (On a Reel of 2500)
units
N 4 A 600 V 2.5 Ω TO-252 Surface Mount 3 + Tab ±30 V Enhancement 4.5V 2.5V 50 W Single 1
RS Stock No. 398-423
Mfr. Part No.TSM2302CX RFG
HK$2.884
Each (In a Pack of 50)
units
N 2.8 A 20 V 65 mΩ SOT-23 Surface Mount 3 -8 V, +8 V Enhancement 1.2V - 900 mW Single 1