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 124-1310
製造零件編號2N7000TA
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N 200 mA 60 V 5 Ω TO-92 Through Hole 3 -30 V, +30 V Enhancement - 0.3V 400 mW Single 1
RS庫存編號 903-4074
製造零件編號2N7000-D26Z
HK$1.071
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N 200 mA 60 V 9 Ω TO-92 Through Hole 3 -40 V, +40 V Enhancement - 0.8V 400 mW Single 1
RS庫存編號 739-0224
製造零件編號2N7000TA
HK$2.513
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N 200 mA 60 V 5 Ω TO-92 Through Hole 3 -30 V, +30 V Enhancement - 0.3V 400 mW Single 1
RS庫存編號 671-4733
製造零件編號2N7000
HK$2.40
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N 200 mA 60 V 5 Ω TO-92 Through Hole 3 -20 V, +20 V Enhancement - 0.8V 400 mW Single 1
RS庫存編號 169-8553
製造零件編號2N7000
HK$0.762
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N 200 mA 60 V 5 Ω TO-92 Through Hole 3 -20 V, +20 V Enhancement - 0.8V 400 mW Single 1
RS庫存編號 145-5451
製造零件編號FQP3N30
HK$6.85
毎管:50 個
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N 3.2 A 300 V 2.2 Ω TO-220 Through Hole 3 -30 V, +30 V Enhancement - 3V 55 W Single 1
RS庫存編號 807-5872
製造零件編號FQP3N30
HK$6.85
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N 3.2 A 300 V 2.2 Ω TO-220 Through Hole 3 -30 V, +30 V Enhancement - 3V 55 W Single 1
RS庫存編號 809-0880
製造零件編號FDD4141
HK$7.159
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P 10.8 A 40 V 18.7 mΩ DPAK (TO-252) Surface Mount 3 -20 V, +20 V Enhancement - 1V 69 W Single 1
RS庫存編號 124-1417
製造零件編號FDD4141
HK$3.72
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P 10.8 A 40 V 18.7 mΩ DPAK (TO-252) Surface Mount 3 -20 V, +20 V Enhancement - 1V 69 W Single 1
RS庫存編號 145-5690
製造零件編號FDG6320C
HK$1.06
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N, P 140 mA, 220 mA 25 V 4 Ω, 10 Ω SOT-363 (SC-70) Surface Mount 6 -8 V, +8 V Enhancement - - 300 mW Isolated 2
RS庫存編號 163-1139
製造零件編號NTS2101PT1G
HK$0.813
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P 1.5 A 8 V 210 mΩ SOT-323 (SC-70) Surface Mount 3 -8 V, +8 V Enhancement - 0.45V 330 mW Single 1
RS庫存編號 807-5875
製造零件編號FQP3P20
HK$5.998
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P 1.8 A 200 V 2.7 Ω TO-220 Through Hole 3 -30 V, +30 V Enhancement - 3V 52 W Single 1
RS庫存編號 917-5465
製造零件編號FDG6320C
HK$3.01
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N, P 140 mA, 220 mA 25 V 4 Ω, 10 Ω SOT-363 (SC-70) Surface Mount 6 -8 V, +8 V Enhancement - - 300 mW Isolated 2
RS庫存編號 145-4533
製造零件編號FQPF2N60C
HK$8.39
毎管:50 個
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N 2 A 600 V 4.7 Ω TO-220F Through Hole 3 -30 V, +30 V Enhancement - 2V 23 W Single 1
RS庫存編號 780-4755
製造零件編號NTS2101PT1G
HK$2.71
/個 (每包:25個)
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P 1.5 A 8 V 210 mΩ SOT-323 (SC-70) Surface Mount 3 -8 V, +8 V Enhancement - 0.45V 330 mW Single 1
RS庫存編號 166-3620
製造零件編號FQP3P20
HK$6.00
毎管:50 個
單位
P 1.8 A 200 V 2.7 Ω TO-220 Through Hole 3 -30 V, +30 V Enhancement - 3V 52 W Single 1
RS庫存編號 671-5244
製造零件編號FQPF2N60C
HK$10.042
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N 2 A 600 V 4.7 Ω TO-220F Through Hole 3 -30 V, +30 V Enhancement - 2V 23 W Single 1
RS庫存編號 671-5118
製造零件編號FQP3P50
HK$12.15
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P 2.7 A 500 V 4.9 Ω TO-220AB Through Hole 3 -30 V, +30 V Enhancement - 3V 85 W Single 1
RS庫存編號 145-5369
製造零件編號FQP3P50
HK$10.35
毎管:50 個
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P 2.7 A 500 V 4.9 Ω TO-220AB Through Hole 3 -30 V, +30 V Enhancement - 3V 85 W Single 1
RS庫存編號 807-5923
製造零件編號FQPF9P25
HK$12.58
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P 3.9 A 250 V 620 mΩ TO-220F Through Hole 3 -30 V, +30 V Enhancement - 3V 50 W Single 1