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 145-6660
製造零件編號C2M1000170D
BrandWolfspeed
HK$44.16
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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 178-0840
製造零件編號IRFBC30PBF
BrandVishay
HK$8.987
毎管:50 個
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N 3.6 A 600 V 2.2 Ω TO-220AB Through Hole 3 -20 V, +20 V Enhancement - 2V 74 W Single 1
RS庫存編號 168-7545
製造零件編號STF9NK90Z
HK$20.017
毎管:50 個
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N 8 A 900 V 1.3 Ω TO-220FP Through Hole 3 -30 V, +30 V Enhancement 4.5V 3V 40 W Single 1
RS庫存編號 542-9507
製造零件編號IRFBC30PBF
BrandVishay
HK$11.79
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N 3.6 A 600 V 2.2 Ω TO-220AB Through Hole 3 -20 V, +20 V Enhancement - 2V 74 W Single 1
RS庫存編號 799-5056
製造零件編號TK17A65W,S5X(M
BrandToshiba
HK$9.75
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N 17 A 650 V 200 mΩ TO-220SIS Through Hole 3 -30 V, +30 V Enhancement 3.5V - 45 W Single 1
RS庫存編號 169-7208
製造零件編號PSMN5R6-100PS,127
BrandNexperia
HK$12.183
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N 100 A 100 V 5.6 mΩ TO-220AB Through Hole 3 -20 V, +20 V Enhancement 4V 2V 306 W Single 1
RS庫存編號 807-5923
製造零件編號FQPF9P25
HK$9.904
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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
RS庫存編號 121-9547
製造零件編號DMP2305U-7
HK$0.555
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P 4.2 A 20 V 113 mΩ SOT-23 Surface Mount 3 -8 V, +8 V Enhancement 0.9V - 1.4 W Single 1
RS庫存編號 904-7345
製造零件編號C2M1000170D
BrandWolfspeed
HK$44.02
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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 688-7005
製造零件編號IRFP4321PBF
BrandInfineon
HK$31.88
/個 (每包:2個)
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N 78 A 150 V 16 mΩ TO-247AC Through Hole 3 -30 V, +30 V Enhancement 5V 3V 310 W Single 1
RS庫存編號 906-4410
製造零件編號BSC360N15NS3GATMA1
BrandInfineon
HK$10.629
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N 33 A 150 V 38 mΩ TDSON Surface Mount 8 -20 V, +20 V Enhancement - - 74 W Single 1
RS庫存編號 124-1664
製造零件編號RFP70N06
HK$10.023
毎管:50 個
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N 70 A 60 V 14 mΩ TO-220AB Through Hole 3 -20 V, +20 V Enhancement - 2V 150 W Single 1
RS庫存編號 919-4808
製造零件編號IRFP064NPBF
BrandInfineon
HK$17.40
毎管:25 個
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N 110 A 55 V 8 mΩ TO-247AC Through Hole 3 -20 V, +20 V Enhancement 4V 2V 200 W Single 1
RS庫存編號 841-312
製造零件編號RFP70N06
HK$13.62
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N 70 A 60 V 14 mΩ TO-220AB Through Hole 3 -20 V, +20 V Enhancement - 2V 150 W Single 1
RS庫存編號 165-6592
製造零件編號STD10N60M2
HK$5.47
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N 7.5 A 650 V 600 mΩ DPAK (TO-252) Surface Mount 3 -25 V, +25 V Enhancement 4V 2V 85 W Single 1
RS庫存編號 787-7529
製造零件編號MTM231232LBF
BrandPanasonic
HK$3.205
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P 3 A 20 V 40 mΩ Smini3-G1-B Surface Mount 3 -10 V, +10 V Enhancement 1.3V - 500 mW Single 1
RS庫存編號 919-4933
製造零件編號IRF7343PBF
BrandInfineon
HK$4.815
毎管:95 個
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N, P 3.4 A, 4.7 A 55 V 50 mΩ, 105 mΩ SOIC Surface Mount 8 -20 V, +20 V Enhancement 1V 1V 2 W Isolated 2
RS庫存編號 168-6215
製造零件編號STP4NK60ZFP
HK$4.15
毎管:50 個
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N 4 A 600 V 2 Ω TO-220FP Through Hole 3 -30 V, +30 V Enhancement 4.5V 3V 25 W Single 1
RS庫存編號 753-3037
製造零件編號IPP100N10S305AKSA1
BrandInfineon
HK$25.91
單位
N 100 A 100 V 5.1 mΩ TO-220 Through Hole 3 -20 V, +20 V Enhancement 4V 2V 300 W Single 1
RS庫存編號 124-9058
製造零件編號IPP80P03P4L04AKSA1
BrandInfineon
HK$11.232
毎管:50 個
單位
P 80 A 30 V 7 mΩ TO-220 Through Hole 3 -16 V, +5 V Enhancement 2V 1V 137 W Single 1