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.

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

N-Channel vs. P-Channel MOSFETs

MOSFETs are made of p-type or n-type doped silicon.

  • N-Channel MOSFETS contain additional electrons which are free to move around. They are the 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.

Where are MOSFETs used?

MOSFETs are found within many applications, such as microprocessors and other memory components. MOSFET transistors are most commonly used as a voltage-controlled switch within circuits.

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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. 162-9835
Mfr. Part No.MDU1516URH
BrandMagnaChip
TWD10.80
Each (On a Reel of 3000)
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N 47 A 30 V 14 mΩ PowerDFN56 Surface Mount 8 -20 V, +20 V Enhancement 2.7V - 35.7 W Single 1
RS Stock No. 871-5012
Mfr. Part No.MDU1516URH
BrandMagnaChip
TWD8.10
Each (On a Reel of 25)
units
N 47 A 30 V 14 mΩ PowerDFN56 Surface Mount 8 -20 V, +20 V Enhancement 2.7V - 35.7 W Single 1
RS Stock No. 871-5022
Mfr. Part No.MDV1527URH
BrandMagnaChip
TWD6.70
Each (On a Reel of 25)
units
N 29 A 30 V 23.7 mΩ PowerDFN33 Surface Mount 8 -20 V, +20 V Enhancement 2.7V - 23.5 W Single 1
RS Stock No. 871-4965
Mfr. Part No.MDP1921TH
BrandMagnaChip
TWD45.80
Each (In a Tube of 10)
units
N 153 A 100 V 4.5 mΩ TO-220 Through Hole 3 -20 V, +20 V Enhancement 4V - 223 W Single 1
RS Stock No. 170-3039
Mfr. Part No.MDV1527URH
BrandMagnaChip
TWD9.00
Each (On a Reel of 5000)
units
N 29 A 30 V 23.7 mΩ PowerDFN33 Surface Mount 8 -20 V, +20 V Enhancement 2.7V - 23.5 W Single 1
RS Stock No. 162-9823
Mfr. Part No.MDD1503RH
BrandMagnaChip
TWD13.50
Each (On a Reel of 3000)
units
N 87 A 30 V 6.8 mΩ DPAK (TO-252) Surface Mount 3 -20 V, +20 V Enhancement 2.7V - 59.5 W Single 1
RS Stock No. 170-3032
Mfr. Part No.MDP1921TH
BrandMagnaChip
TWD45.00
Each (In a Tube of 50)
units
N 153 A 100 V 4.5 mΩ TO-220 Through Hole 3 -20 V, +20 V Enhancement 4V - 223 W Single 1
RS Stock No. 162-9831
Mfr. Part No.MDS3603URH
BrandMagnaChip
TWD13.50
Each (On a Reel of 3000)
units
P 12 A 30 V 14.5 mΩ SOIC Surface Mount 8 -25 V, +25 V Enhancement 3V - 2.5 W Single 1
RS Stock No. 871-4899
Mfr. Part No.MDD1503RH
BrandMagnaChip
TWD10.30
Each (On a Reel of 25)
units
N 87 A 30 V 6.8 mΩ DPAK (TO-252) Surface Mount 3 -20 V, +20 V Enhancement 2.7V - 59.5 W Single 1
RS Stock No. 871-4993
Mfr. Part No.MDS3603URH
BrandMagnaChip
TWD10.30
Each (On a Reel of 25)
units
P 12 A 30 V 14.5 mΩ SOIC Surface Mount 8 -25 V, +25 V Enhancement 3V - 2.5 W Single 1
RS Stock No. 871-5040
Mfr. Part No.MMF60R750PTH
BrandMagnaChip
TWD23.30
Each (In a Tube of 10)
units
N 5.7 A 600 V 750 mΩ TO-220F Through Hole 3 -30 V, +30 V Enhancement 4V - 27.1 W Single 1
RS Stock No. 871-4892
Mfr. Part No.MDC0531EURH
BrandMagnaChip
TWD8.80
Each (On a Reel of 25)
units
N 8 A 30 V 23 mΩ TSSOP Surface Mount 8 -12 V, +12 V Enhancement 1.5V - 1.7 W Common Drain 2
RS Stock No. 162-9828
Mfr. Part No.MDD5N40RH
BrandMagnaChip
TWD11.60
Each (On a Reel of 3000)
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N 3.4 A 400 V 1.6 Ω DPAK (TO-252) Surface Mount 3 -30 V, +30 V Enhancement 5V - 45 W Single 1
RS Stock No. 170-3037
Mfr. Part No.MDS5652URH
BrandMagnaChip
TWD8.90
Each (On a Reel of 3000)
units
N 7.5 A 30 V 35 mΩ SOIC Surface Mount 8 -20 V, +20 V Enhancement 3V - 2 W Isolated 2
RS Stock No. 871-6665
Mfr. Part No.MDF5N50BTH
BrandMagnaChip
TWD12.40
Each (In a Tube of 50)
units
N 5 A 500 V 1.4 Ω TO-220F Through Hole 3 -30 V, +30 V Enhancement 4V - 27 W Single 1
RS Stock No. 871-5044
Mfr. Part No.MMF65R190PTH
BrandMagnaChip
TWD56.80
Each (In a Tube of 5)
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N 20 A 650 V 190 mΩ TO-220F Through Hole 3 -30 V, +30 V Enhancement 4V - 34 W Single 1
RS Stock No. 871-4990
Mfr. Part No.MDS5652URH
BrandMagnaChip
TWD9.80
Each (On a Reel of 25)
units
N 7.5 A 30 V 35 mΩ SOIC Surface Mount 8 -20 V, +20 V Enhancement 3V - 2 W Isolated 2
RS Stock No. 871-4978
Mfr. Part No.MDS1524URH
BrandMagnaChip
TWD7.80
Each (On a Reel of 25)
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N 19 A 30 V 11.7 mΩ SOIC Surface Mount 8 -20 V, +20 V Enhancement 2.7V - 5.3 W Single 1
RS Stock No. 162-9829
Mfr. Part No.MDD5N50RH
BrandMagnaChip
TWD12.80
Each (On a Reel of 3000)
units
N 4.4 A 500 V 1.4 Ω DPAK (TO-252) Surface Mount 3 -30 V, +30 V Enhancement 5V - 70 W Single 1
RS Stock No. 871-6668
Mfr. Part No.MDF2N60TH
BrandMagnaChip
TWD15.70
Each (In a Tube of 50)
units
N 2 A 600 V 4.5 Ω TO-220F Through Hole 3 -30 V, +30 V Enhancement 5V - 22.7 W Single 1