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 Maximum Gate Threshold Voltage Minimum Gate Threshold Voltage Maximum Gate Source Voltage Package Type Mounting Type Pin Count Transistor Configuration Channel Mode Category Maximum Power Dissipation
RS庫存編號 110-7170
製造零件編號BSS606NH6327XTSA1
BrandInfineon
HK$2.227
/個 (每包:50個)
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N 3.2 A 60 V 90 mΩ 2.3V 1.3V -20 V, +20 V PG-SOT-89 Surface Mount 4 Single Enhancement Small Signal 1 W
RS庫存編號 145-8766
製造零件編號BSS606NH6327XTSA1
BrandInfineon
HK$1.40
個 (在毎卷:1000)
單位
N 3.2 A 60 V 90 mΩ 2.3V 1.3V -20 V, +20 V PG-SOT-89 Surface Mount 4 Single Enhancement Small Signal 1 W
RS庫存編號 739-0224
製造零件編號2N7000TA
HK$1.582
/個 (每包:10個)
單位
N 200 mA 60 V 5 Ω - 0.3V -30 V, +30 V TO-92 Through Hole 3 Single Enhancement Small Signal 400 mW
RS庫存編號 124-1310
製造零件編號2N7000TA
HK$0.526
個 (在毎卷:2000)
單位
N 200 mA 60 V 5 Ω - 0.3V -30 V, +30 V TO-92 Through Hole 3 Single Enhancement Small Signal 400 mW
RS庫存編號 671-4733
製造零件編號2N7000
HK$1.679
/個 (每包:20個)
單位
N 200 mA 60 V 5 Ω - 0.8V -20 V, +20 V TO-92 Through Hole 3 Single Enhancement Small Signal 400 mW
RS庫存編號 903-4074
製造零件編號2N7000-D26Z
HK$1.32
/個 (每包:100個)
單位
N 200 mA 60 V 9 Ω - 0.8V -40 V, +40 V TO-92 Through Hole 3 Single Enhancement Power MOSFET 400 mW
RS庫存編號 169-8553
製造零件編號2N7000
HK$0.499
個 (在毎卷:10000)
單位
N 200 mA 60 V 5 Ω - 0.8V -20 V, +20 V TO-92 Through Hole 3 Single Enhancement Small Signal 400 mW
RS庫存編號 124-9024
製造零件編號IRLB3034PBF
BrandInfineon
HK$19.674
毎管:50 個
單位
N 343 A 40 V 2 mΩ 2.5V 1V -20 V, +20 V TO-220AB Through Hole 3 Single Enhancement Power MOSFET 375 W
RS庫存編號 891-2885
製造零件編號TK14A65W,S5X(M
BrandToshiba
HK$11.16
/個 (每包:5個)
單位
N 13.7 A 650 V 250 mΩ 3.5V - -30 V, +30 V TO-220SIS Through Hole 3 Single Enhancement Power MOSFET 40 W
RS庫存編號 688-7204
製造零件編號IRLB3034PBF
BrandInfineon
HK$32.585
/個 (每包:2個)
單位
N 343 A 40 V 2 mΩ 2.5V 1V -20 V, +20 V TO-220AB Through Hole 3 Single Enhancement Power MOSFET 375 W
RS庫存編號 145-5451
製造零件編號FQP3N30
HK$4.119
毎管:50 個
單位
N 3.2 A 300 V 2.2 Ω - 3V -30 V, +30 V TO-220 Through Hole 3 Single Enhancement Power MOSFET 55 W
RS庫存編號 542-9787
製造零件編號IRFP264PBF
BrandVishay
HK$31.68
單位
N 38 A 250 V 75 mΩ - 2V -20 V, +20 V TO-247AC Through Hole 3 Single Enhancement Power MOSFET 280 W
RS庫存編號 650-4277
製造零件編號IRFB4227PBF
BrandInfineon
HK$30.24
單位
N 65 A 200 V 24 mΩ 5V 3V -30 V, +30 V TO-220AB Through Hole 3 Single Enhancement Power MOSFET 330 W
RS庫存編號 807-5872
製造零件編號FQP3N30
HK$5.328
/個 (每包:10個)
單位
N 3.2 A 300 V 2.2 Ω - 3V -30 V, +30 V TO-220 Through Hole 3 Single Enhancement Power MOSFET 55 W
RS庫存編號 178-0790
製造零件編號IRFP264PBF
BrandVishay
HK$37.446
毎管:25 個
單位
N 38 A 250 V 75 mΩ - 2V -20 V, +20 V TO-247AC Through Hole 3 Single Enhancement Power MOSFET 280 W
RS庫存編號 913-3932
製造零件編號IRFB4227PBF
BrandInfineon
HK$16.596
毎管:50 個
單位
N 65 A 200 V 24 mΩ 5V 3V -30 V, +30 V TO-220AB Through Hole 3 Single Enhancement Power MOSFET 330 W
RS庫存編號 919-0032
製造零件編號IRFP250PBF
BrandVishay
HK$17.513
毎管:25 個
單位
N 30 A 200 V 85 mΩ - 2V -20 V, +20 V TO-247AC Through Hole 3 Single Enhancement Power MOSFET 190 W
RS庫存編號 708-5156
製造零件編號IRFP250PBF
BrandVishay
HK$25.654
/個 (每包:5個)
單位
N 30 A 200 V 85 mΩ - 2V -20 V, +20 V TO-247AC Through Hole 3 Single Enhancement Power MOSFET 190 W
RS庫存編號 542-9399
製造零件編號IRF740APBF
BrandVishay
HK$16.87
單位
N 10 A 400 V 550 mΩ - 2V -30 V, +30 V TO-220AB Through Hole 3 Single Enhancement Power MOSFET 125 W
RS庫存編號 178-0831
製造零件編號IRF740APBF
BrandVishay
HK$11.085
毎管:50 個
單位
N 10 A 400 V 550 mΩ - 2V -30 V, +30 V TO-220AB Through Hole 3 Single Enhancement Power MOSFET 125 W