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庫存編號 145-0971
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N 10 A 1200 V 370 mΩ TO-247 Through Hole 3 +25 V Enhancement 4V 2V 62.5 W Single 1
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N 10 A 1200 V 370 mΩ TO-247 Through Hole 3 +25 V Enhancement 4V 2V 62.5 W Single 1
RS庫存編號 145-6660
製造零件編號C2M1000170D
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HK$44.92
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N 5 A 1700 V 1.4 Ω TO-247 Through Hole 3 -5 V, +20 V Enhancement 3.1V 2.4V 69 W Single 1
RS庫存編號 904-7345
製造零件編號C2M1000170D
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N 5 A 1700 V 1.4 Ω TO-247 Through Hole 3 -5 V, +20 V Enhancement 3.1V 2.4V 69 W Single 1
RS庫存編號 162-9714
製造零件編號C3M0280090D
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HK$29.69
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N 11.5 A 900 V 360 mΩ TO-247 Through Hole 3 -8 V, +18 V Enhancement 3.5V 1.8V 54 W Single 1
RS庫存編號 915-8842
製造零件編號C3M0280090D
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N 11.5 A 900 V 360 mΩ TO-247 Through Hole 3 -8 V, +18 V Enhancement 3.5V 1.8V 54 W Single 1
RS庫存編號 162-9713
製造零件編號C3M0065090J
BrandWolfspeed
HK$88.22
毎管:50 個
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N 35 A 900 V 78 mΩ D2PAK (TO-263) Surface Mount 7 +25 V Enhancement 2.1V 1.8V 113 W Single 1
RS庫存編號 915-8833
製造零件編號C2M1000170J
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HK$47.83
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N 5.3 A 1700 V 1.4 Ω D2PAK (TO-263) Surface Mount 7 -10 V, +25 V Enhancement 4V 2V 78 W Single 1
RS庫存編號 915-8830
製造零件編號C3M0065090J
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HK$92.85
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N 35 A 900 V 78 mΩ D2PAK (TO-263) Surface Mount 7 +25 V Enhancement 2.1V 1.8V 113 W Single 1
RS庫存編號 162-9710
製造零件編號C2M1000170J
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N 5.3 A 1700 V 1.4 Ω D2PAK (TO-263) Surface Mount 7 -10 V, +25 V Enhancement 4V 2V 78 W Single 1
RS庫存編號 192-3494
製造零件編號C2M0080170P
BrandWolfspeed
HK$349.55
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N 40 A 1700 V 80 mΩ TO-247 Through Hole 4 -10 V, 25 V Enhancement 4V 2V 277 W Single 1
RS庫存編號 192-3369
製造零件編號C3M0032120K
BrandWolfspeed
HK$332.38
毎管:30 個
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N 63 A 1200 V 32 mΩ TO-247 Through Hole 4 -8 V, 19 V Enhancement 3.6V 1.8V 283 W Single 1
RS庫存編號 915-8849
製造零件編號C3M0120090D
BrandWolfspeed
HK$61.32
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N 23 A 900 V 155 mΩ TO-247 Through Hole 3 -8 V, +18 V Enhancement 3.5V 1.8V 97 W Single 1
RS庫存編號 192-3373
製造零件編號C3M0075120J
BrandWolfspeed
HK$110.169
毎管:50 個
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N 30 A 1200 V 75 mΩ TO-263 Surface Mount 7 -8 V, 19 V Enhancement 3.6V 1.8V 113.6 W Single 1
RS庫存編號 192-3498
製造零件編號C3M0032120K
BrandWolfspeed
HK$341.70
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N 63 A 1200 V 32 mΩ TO-247 Through Hole 4 -8 V, 19 V Enhancement 3.6V 1.8V 283 W Single 1
RS庫存編號 162-9721
製造零件編號CAS300M12BM2
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N 404 A 1200 V 9.8 mΩ Half Bridge Panel Mount 7 -10 V, +25 V Enhancement 2.3V 1.8V 1.66 kW Series 2
RS庫存編號 192-3509
製造零件編號C3M0280090J
BrandWolfspeed
HK$32.165
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N 11 A 900 V 280 mΩ TO-263 Surface Mount 7 -8 V, 18 V Enhancement 3.5V 1.8V 50 W Single 1
RS庫存編號 192-3515
製造零件編號C3M0065100J
BrandWolfspeed
HK$120.34
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N 35 A 1000 V 65 mΩ TO-263 Surface Mount 7 -8 V, 19 V Enhancement 3.5V 1.8V 113.5 W Single 1
RS庫存編號 192-3374
製造零件編號C3M0065100J
BrandWolfspeed
HK$117.118
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N 35 A 1000 V 65 mΩ TO-263 Surface Mount 7 -8 V, 19 V Enhancement 3.5V 1.8V 113.5 W Single 1
RS庫存編號 923-0711
製造零件編號C2M0040120D
BrandWolfspeed
HK$291.96
單位
N 60 A 1200 V 52 mΩ TO-247 Through Hole 3 -5 V, +20 V Enhancement 4V 2V 330 W Single 1