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. 398-423
Mfr. Part No.TSM2302CX RFG
MYR1.34
Each (In a Pack of 50)
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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. 169-8935
Mfr. Part No.TSM2302CX RFG
MYR1.264
Each (On a Reel of 3000)
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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. 171-3693
Mfr. Part No.TSM2303CX RFG
MYR0.753
Each (In a Pack of 100)
units
P 1.3 A 30 V 300 mΩ SOT-23 Surface Mount 3 ±20 V Enhancement 3V 1V 700 mW Single 1
RS Stock No. 171-3709
Mfr. Part No.TSM3N80CH C5G
MYR11.385
Each (In a Pack of 10)
units
N 3 A 800 V 4.2 mΩ TO-251 Through Hole 3 ±30 V Enhancement 4V 2V 94 W Single 1
New
RS Stock No. 216-9666
Mfr. Part No.TSM055N03PQ56
MYR1.492
Each (In a Pack of 25)
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- 80 A 30 V 8.5 mΩ PDFN56 - 8 - Enhancement 2.5V - - - -
RS Stock No. 171-3713
Mfr. Part No.TSM4436CS RLG
MYR2.254
Each (In a Pack of 25)
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N 8 A 60 V 43 mΩ SOP Surface Mount 8 ±20 V Enhancement 3V 1V 2.5 W Single 1
RS Stock No. 169-9279
Mfr. Part No.TSM2306CX RFG
MYR2.072
Each (On a Reel of 3000)
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N 3.5 A 30 V 94 mΩ SOT-23 Surface Mount 3 -20 V, +20 V Enhancement 3V - 1.25 W Single 1
RS Stock No. 171-3697
Mfr. Part No.TSM2308CX RFG
MYR2.18
Each (In a Pack of 50)
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N 3 A 60 V 192 mΩ SOT-23 Surface Mount 3 ±20 V Enhancement 2.5V 1.2V 1.25 W Single 1
RS Stock No. 743-6021
Mfr. Part No.TSM2306CX RFG
MYR2.116
Each (In a Pack of 25)
units
N 3.5 A 30 V 94 mΩ SOT-23 Surface Mount 3 -20 V, +20 V Enhancement 3V - 1.25 W Single 1
New
RS Stock No. 216-9671
Mfr. Part No.TSM080N03EPQ56
MYR1.029
Each (On a Reel of 2500)
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- 55 A 30 V 8 mΩ PDFN56 - 8 - Enhancement 2.5V - - - -
RS Stock No. 171-3703
Mfr. Part No.TSM230N06CP ROG
MYR3.198
Each (In a Pack of 25)
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N 50 A 60 V 28 mΩ TO-252 Surface Mount 3 + Tab ±20 V Enhancement 2.5V 1.2V 53 W Single 1
RS Stock No. 171-3707
Mfr. Part No.TSM2N100CP ROG
MYR6.152
Each (In a Pack of 10)
units
N 1.85 A 1000 V 8.5 Ω TO-252 Surface Mount 3 + Tab ±30 V Enhancement 5.5V 3.5V 77 W Single 1
New
RS Stock No. 216-9659
Mfr. Part No.TSM045NB06CR
MYR4.971
Each (In a Pack of 10)
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- 104 A 60 V 5 mΩ PDFN56 - 8 - Enhancement 4V - - - -
New
RS Stock No. 216-9691
Mfr. Part No.TSM150NB04CR
MYR1.333
Each (On a Reel of 2500)
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- 41 A 40 V 15 mΩ PDFN56 - 8 - Enhancement 4V - - - -
New
RS Stock No. 216-9687
Mfr. Part No.TSM130NB06CR
MYR2.548
Each (In a Pack of 25)
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- 51 A 60 V 13 mΩ PDFN56 - 8 - Enhancement 4V - - - -
New
RS Stock No. 216-9683
Mfr. Part No.TSM110NB04DCR
MYR2.546
Each (In a Pack of 25)
units
- 48 A 40 V 11 mΩ PDFN56 - 8 - Enhancement 4V - - - -
RS Stock No. 171-3638
Mfr. Part No.TSM70N600CP ROG
MYR11.072
Each (On a Reel of 2500)
units
N 8 A 700 V 600 mΩ TO-252 Surface Mount 3 + Tab ±30 V Enhancement 4V 2V 83 W Single 1
RS Stock No. 169-9282
Mfr. Part No.TSM2307CX RFG
MYR1.757
Each (On a Reel of 3000)
units
P 3 A 30 V 140 mΩ SOT-23 Surface Mount 3 -20 V, +20 V Enhancement 3V - 1.25 W Single 1
RS Stock No. 171-3688
Mfr. Part No.TSM1NB60CH C5G
MYR5.062
Each (In a Pack of 25)
units
N 1 A 600 V 10 Ω TO-251 Through Hole 3 ±30 V Enhancement 4.5V 2.5V 39 W Single 1
RS Stock No. 171-3721
Mfr. Part No.TSM4NB60CI C0G
MYR4.00
Each (In a Pack of 25)
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N 4 A 600 V 2.5 Ω ITO-220 Through Hole 3 ±30 V Enhancement 4.5V 2.5V 25 W Single 1