Dab tsi yog universal NPN fais fab transistor?

1, Lus Txhais thiab Txheej Txheem
Universal NPN fais fab transistor, raws li lub npe qhia, yog lub hwj chim hom transistor tsim nrog NPN qauv. Nws feem ntau yog tsim los ntawm ob hom N-hom semiconductor cov ntaub ntawv sandwiching P-hom semiconductor khoom, tsim peb lub ntsiab cheeb tsam: emitter, puag, thiab collector. Cov qauv no muab NPN fais fab transistors tshwj xeeb zoo hauv kev tswj cov dej ntws tam sim no, tshwj xeeb tshaj yog hauv kev tuav cov teeb liab siab zog.
2, Cov yam ntxwv tsom xam
Muaj peev xwm ua haujlwm siab: Ib qho tseem ceeb tshaj plaws ntawm lub hom phiaj NPN fais fab transistor yog nws lub peev xwm ua haujlwm siab. Qhov no txhais tau hais tias nws tuaj yeem tiv taus cov tam sim no loj thiab qhov hluav taws xob, yog li ua lub luag haujlwm tseem ceeb hauv circuits uas yuav tsum tau muaj hluav taws xob ntau. Piv txwv li, nyob rau hauv lub zog hloov dua siab tshiab, lub cev muaj zog tsav, thiab lub zog hluav taws xob tshuab hluav taws xob, NPN fais fab transistors tuaj yeem ua haujlwm ruaj khov thiab ntseeg tau los xyuas kom meej qhov kev ua haujlwm ntawm lub cev.
Tsawg saturation voltage poob: Nyob rau hauv qis tam sim no los yog tsis tshua muaj voltage tej yam kev mob, lub saturation voltage poob ntawm NPN fais fab transistors kuj tsawg. Qhov no yuav pab txo qis zog poob thiab txhim kho kev ua haujlwm hauv Circuit Court. Tshwj xeeb tshaj yog nyob rau hauv kev hloov daim ntawv thov, tsis tshua muaj saturation voltage poob enables transistors mus txog saturation xeev sai dua nyob rau hauv lub conducting lub xeev, yog li shortening hloov lub sij hawm thiab kev txhim kho system teb ceev.
Kev hloov pauv siab ceev: General NPN fais fab transistors feem ntau muaj qhov hloov pauv ceev, uas txhais tau tias lawv tuaj yeem hloov pauv hloov pauv sai sai hauv lub sijhawm luv luv. Cov yam ntxwv no ua rau nws muaj txiaj ntsig zoo hauv kev siv ntau zaus, xws li RF circuits, wireless kev sib txuas lus, thiab high-speed digital logic circuits.
Zoo thermal stability: Vim yog qhov tseeb tias NPN fais fab transistors tsim muaj qee qhov kub ntawm lub sijhawm ua haujlwm, lawv cov thermal stability kuj yog ib qho tseem ceeb rau kev txiav txim siab. Kev ruaj ntseg thermal zoo txhais tau hais tias cov transistors tuaj yeem ua haujlwm ruaj khov rau lub sijhawm ntev hauv qhov kub thiab txias yam tsis muaj kev puas tsuaj lossis kev ua haujlwm degradation vim overheating.
3, Txoj cai ua haujlwm
Lub hauv paus ntsiab lus ua haujlwm ntawm universal NPN fais fab transistor yog raws li cov yam ntxwv ntawm cov khoom siv hluav taws xob semiconductor thiab cov khoom ntawm PN junctions. Thaum ib qho hluav taws xob rau pem hauv ntej yog siv los ntawm lub hauv paus thiab emitter, dawb electrons nyob rau hauv lub emitter yuav hla PN hlws ris mus rau hauv lub hauv paus cheeb tsam thiab recombine nrog qhov nyob rau hauv lub hauv paus los tsim ib tug puag tam sim no. Nyob rau tib lub sij hawm, nyob rau hauv qhov kev txiav txim ntawm kev siv ib tug reverse bias voltage ntawm lub collector thiab lub hauv paus, lub qhov nyob rau hauv lub collector yog attracted los ntawm hluav taws xob teb thiab txav mus rau hauv lub hauv paus. Txawm li cas los xij, vim muaj qhov cuam tshuam ntawm qhov rov qab tsis zoo voltage, cov qhov no nyuaj rau nkag mus rau hauv cheeb tsam hauv paus, yog li tsim cov txheej txheem depletion ntawm cov khoom siv thiab lub hauv paus. Thaum lub hauv paus tam sim no nce, ntau electrons yuav raug txhaj los ntawm lub emitter mus rau hauv paus thiab diffuse mus rau lub collector cheeb tsam los tsim lub collector tam sim no. Vim lub fact tias lub collector tam sim no yog amplified tshwm sim ntawm lub hauv paus tam sim no, NPN fais fab transistors muaj cov hauj lwm ntawm tam sim no amplification.
4, Daim ntawv thov teb
Universal NPN fais fab transistors tau dav siv nyob rau hauv ntau yam khoom siv hluav taws xob thiab tshuab vim lawv lub zog ua haujlwm siab, tsis tshua muaj hluav taws xob poob qis, hloov pauv ceev, thiab zoo thermal stability. Nov yog qee qhov chaw thov tseem ceeb:
Kev hloov hluav taws xob: Hauv cov tshuab hluav taws xob hluav taws xob, NPN fais fab transistors feem ntau yog siv los hloov cov ntsiab lus los tswj kev hloov pauv thiab kev faib hluav taws xob. Los ntawm kev tswj lub xeev hloov ntawm transistors, kev hloov dua siab tshiab thiab kev tswj ntawm hluav taws xob hluav taws xob tuaj yeem ua tiav kom tau raws li qhov xav tau ntawm cov khoom sib txawv.
Tsav tsav tsheb: Hauv kev tswj lub cev muaj zog, NPN fais fab transistors yog siv los tsav kev ua haujlwm ntawm lub cev muaj zog. Los ntawm kev tswj lub xeev ntawm thiab tawm ntawm transistors, qhov ceev thiab lub zog tawm ntawm lub cev tuaj yeem hloov kho kom ua tiav cov kev tswj xyuas meej.
Audio amplification: Nyob rau hauv lub suab amplification circuits, NPN fais fab transistors yog siv los ua amplification Cheebtsam. Nws tuaj yeem ua kom nrov suab nrov thiab tsav cov neeg hais lus los tsim lub suab, yog li ua tiav lub suab nrov nrov thiab kis tau tus mob.
Hloov Circuit Court: Hauv cov digital thiab logic circuits, NPN fais fab transistors feem ntau yog siv los hloov cov ntsiab lus los tswj qhov qhib / tawm ntawm Circuit Court. Kev ua haujlwm logic thiab teeb liab ua tiav tuaj yeem ua tiav los ntawm kev tswj hwm lub xeev hloov pauv ntawm transistors.

https://www.trrsemicon.com/transistor/power-transistor-mjd122.html