Ho na le mefuta e mengata ea MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor), e 'ngoe le e 'ngoe e na le litekanyo tsa eona tse khethehileng tsa motlakase, tsa hona joale le tsa matla. Ka tlase ho na le tafole e nolofalitsoeng ea mohlala ea MOSFET e kenyelletsang mefuta e meng e tloaelehileng le likarolo tsa eona tsa bohlokoa:
Ka kopo hlokomela hore tafole e ka holimo e thathamisa feela mefuta e meng ea MOSFET le likarolo tsa eona tsa bohlokoa, 'me mefuta e mengata le litlhaloso tsa MOSFET li teng 'marakeng oa sebele. Ho feta moo, maemo a MOSFET a ka fapana ho latela moetsi le sehlopha, kahoo o lokela ho sheba lipampiri tse khethehileng tsa lihlahisoa kapa u ikopanye le moetsi bakeng sa tlhahisoleseding e nepahetseng ha u khetha le ho sebelisa MOSFET.
Mofuta oa sephutheloana oa MOSFET le ona ke o mong oa lintlha tsa bohlokoa tse lokelang ho nahanoa ha u khetha e le 'ngoe. Mefuta e tloaelehileng ea liphutheloana e kenyelletsa TO-92, SOT-23, TO-220, joalo-joalo, e 'ngoe le e' ngoe e na le boholo ba eona bo khethehileng, sebopeho sa phini le ts'ebetso ea mocheso. Ha u khetha foromo ea sephutheloana, hoa hlokahala ho tseba maemo le litlhoko tse ikhethang tsa kopo.
Hape ho ke ho hlokomeloe hore li-MOSFET li arotsoe ka mefuta e 'meli, N-channel le P-channel, hammoho le mekhoa e fapaneng ea ts'ebetso e kang ho ntlafatsa le ho fokotseha. Mefuta ena e fapaneng ea MOSFET e na le lits'ebetso tse fapaneng le litšoaneleho tsa ts'ebetso lipotolohong, kahoo hoa hlokahala ho khetha mofuta o nepahetseng oa MOSFET ho ipapisitsoe le litlhoko tse ikhethileng tsa moralo.