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.

Looking for MOSFET Drivers?


...
Read more Read less

Filters

Viewing 1 - 20 of 506 products
Results per page
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. 891-2885
Mfr. Part No.TK14A65W,S5X(M
BrandToshiba
HK$15.604
Each (In a Pack of 5)
units
N 13.7 A 650 V 250 mΩ TO-220SIS Through Hole 3 -30 V, +30 V Enhancement 3.5V - 40 W Single 1
RS Stock No. 799-5056
Mfr. Part No.TK17A65W,S5X(M
BrandToshiba
HK$9.75
Each (In a Pack of 5)
units
N 17 A 650 V 200 mΩ TO-220SIS Through Hole 3 -30 V, +30 V Enhancement 3.5V - 45 W Single 1
RS Stock No. 827-6154
Mfr. Part No.TK17A65W,S5X(M
BrandToshiba
HK$18.055
Each (In a Pack of 2)
units
N 17 A 650 V 200 mΩ TO-220SIS Through Hole 3 -30 V, +30 V Enhancement 3.5V - 45 W Single 1
RS Stock No. 891-2914
Mfr. Part No.TK17A65W,S5X(M
BrandToshiba
HK$11.612
Each (In a Pack of 5)
units
N 17 A 650 V 200 mΩ TO-220SIS Through Hole 3 -30 V, +30 V Enhancement 3.5V - 45 W Single 1
RS Stock No. 168-7961
Mfr. Part No.TK17A65W,S5X(M
BrandToshiba
HK$22.199
Each (In a Tube of 50)
units
N 17 A 650 V 200 mΩ TO-220SIS Through Hole 3 -30 V, +30 V Enhancement 3.5V - 45 W Single 1
RS Stock No. 756-0382
Mfr. Part No.3SK294(TE85L,F)
BrandToshiba
HK$1.845
Each (In a Pack of 10)
units
N 30 mA 12.5 V - USQ Surface Mount 4 -8 V, +8 V Depletion 1.5V - 100 mW Single 1
RS Stock No. 756-2782
Mfr. Part No.SSM6N16FU(TE85L,F)
BrandToshiba
HK$1.845
Each (In a Pack of 10)
units
N 100 mA 20 V 15 Ω US Surface Mount 6 -10 V, +10 V Enhancement 1.1V - 200 mW Isolated 2
RS Stock No. 799-4814
Mfr. Part No.2SK3565,S5Q(J
BrandToshiba
HK$14.222
Each (In a Pack of 5)
units
N 5 A 900 V 2.5 Ω SC-67 Through Hole 3 -30 V, +30 V Enhancement 4V - 45 W Single 1
RS Stock No. 890-2695
Mfr. Part No.2SK3565,S5Q(J
BrandToshiba
HK$33.886
Each (In a Pack of 5)
units
N 5 A 900 V 2.5 Ω SC-67 Through Hole 3 -30 V, +30 V Enhancement 4V - 45 W Single 1
RS Stock No. 601-5418
Mfr. Part No.TPC8017-H(Q)
BrandToshiba
HK$10.60
Each (In a Pack of 5)
units
N 15 A 30 V 7 mΩ SOP Surface Mount 8 -20 V, +20 V Enhancement - - 1.9 W - 1
RS Stock No. 639-5556
Mfr. Part No.SSM3K16FS(TE85L,F)
BrandToshiba
HK$1.60
Each (In a Pack of 10)
units
N 100 mA 20 V 3 Ω SSM Surface Mount 3 -10 V, +10 V Enhancement 1.1V - 100 mW Single 1
RS Stock No. 827-6148
Mfr. Part No.TK16E60W,S1VX(S
BrandToshiba
HK$16.71
Each (In a Pack of 4)
units
N 15.8 A 600 V 190 mΩ TO-220 Through Hole 3 -30 V, +30 V Enhancement 3.7V - 130 W Single 1
RS Stock No. 827-6160
Mfr. Part No.TK20E60W,S1VX(S
BrandToshiba
HK$16.856
Each (In a Pack of 5)
units
N 20 A 600 V 155 mΩ TO-220 Through Hole 3 -30 V, +30 V Enhancement 3.7V - 165 W Single 1
RS Stock No. 184-694
Mfr. Part No.SSM3K17FU(F)
BrandToshiba
HK$1.315
Each (In a Pack of 25)
units
N 100 mA 50 V 20 Ω USM Surface Mount 3 -7 V, +7 V Enhancement 1.5V - 150 mW Single 1
RS Stock No. 799-5040
Mfr. Part No.TK16E60W,S1VX(S
BrandToshiba
HK$12.39
Each (In a Pack of 5)
units
N 15.8 A 600 V 190 mΩ TO-220 Through Hole 3 -30 V, +30 V Enhancement 3.7V - 130 W Single 1
RS Stock No. 891-2932
Mfr. Part No.TK20E60W,S1VX(S
BrandToshiba
HK$13.066
Each (In a Pack of 5)
units
N 20 A 600 V 155 mΩ TO-220 Through Hole 3 -30 V, +30 V Enhancement 3.7V - 165 W Single 1
RS Stock No. 601-3355
Mfr. Part No.SSM3K15F(F)
BrandToshiba
HK$0.779
Each (In a Pack of 10)
units
N 100 mA 30 V 4 Ω SOT-346 (SC-59) Surface Mount 3 -20 V, +20 V Enhancement 1.5V - 200 mW Single 1
RS Stock No. 891-2908
Mfr. Part No.TK16E60W,S1VX(S
BrandToshiba
HK$9.87
Each (In a Pack of 5)
units
N 15.8 A 600 V 190 mΩ TO-220 Through Hole 3 -30 V, +30 V Enhancement 3.7V - 130 W Single 1
RS Stock No. 639-5562
Mfr. Part No.SSM3K15FS(TE85L,F)
BrandToshiba
HK$1.70
Each (In a Pack of 10)
units
N 100 mA 30 V 7 Ω SSM Surface Mount 3 -20 V, +20 V Enhancement 1.5V - 100 mW Single 1
RS Stock No. 168-7963
Mfr. Part No.TK20E60W,S1VX(S
BrandToshiba
HK$14.939
Each (In a Tube of 50)
units
N 20 A 600 V 155 mΩ TO-220 Through Hole 3 -30 V, +30 V Enhancement 3.7V - 165 W Single 1