Dab tsi yog qhov sib txawv ntawm 2N2222 thiab 2N222A?

1, ua tau kev ua tau zoo parameter sib txawv
Voltage thiab cov peev xwm tam sim no:
Tus collector emitter voltage (VCE) ntawm 2N2222 yog 30V, thaum 2N222a tau nce rau 40V. Qhov no txhais tau tias 2N222A muaj qhov txiaj ntsig zoo dua volualages thiab yog qhov tsim nyog rau kev siv nrog ntau dua voltage yuav tsum muaj.
Tus sau txuas ntxiv tam sim no (IC) ntawm ob qho tib si yog 800mA, qhia tau zoo ib yam kev tsav tsheb tam sim no. Txawm li cas los xij, raws li cov xwm txheej tshwj xeeb (xws li ib tug sau tau tam sim no ntawm 50022a yog qis dua (1v vs qis dua (1v vs tsawg dua (1v
Lub zog dissipation thiab zaus teb:
Lub zog dissipation ntawm ob qho tib si yog 500MW, qhia tias lawv tau sib piv ntawm tshav kub dissipation thiab kev siv fais fab. Tab sis nyob rau hauv cov nqe lus ntawm cov zaus teb, hloov zaus zaus (FT) ntawm 2N2222 yog 250mHz, thaum 2N222A tau tsa mus rau 300mHz. Qhov no txhais tau tias 2N222A muaj kev ua tau zoo dua hauv kev ua cov ntsiab lus siab tshaj plaws hauv kev ua haujlwm siab thiab haum rau cov xwm txheej uas yuav tsum tau teb siab dua.
Tam sim no nce:
Cov nqi nominal ntawm ob qho chaw tiv thaiv sib txawv ntawm cov lus qhia ncaj qha tam sim no nce (HFE). HFE ntau ntawm 2N2222 yog li ntawm 100-300, thaum lub HFE ntawm 2N222A yog 30HFE txhais tau tias nws tau txais tus nqi qis dua lossis muaj tshwj xeeb ntau cov yam ntxwv). Qhov qis dua nce tus nqi yuav tau txhais tau tias yuav tsum muaj kev tsav tsheb ntau dua lossis cov qauv sib txawv yog siv los them rau qee cov ntawv thov.
2, ntim daim ntawv thiab tus pin
Ob qho tseem ceeb no muaj nyob rau hauv to-18 cov hlau tuaj yeem ntim, uas yog ib qho, yooj yim rau nruab, thiab cua sov dissipating ntim daim ntawv. Lawv cov pin kev kawm kuj yog tib yam, nrog tus thib peb tus Pin Tsim: PIN 1 yog tus emitter, Pin 2 yog lub hauv paus, thiab tus lej PIN 3 yog tus sau. Qhov kev npaj pin no ua rau nws yooj yim dua los hloov thiab siv ob lub trantors hauv Circuit Court.
3, Daim Ntawv Thov Field thiab Cov yam ntxwv
Lub ntiaj teb thiab kev ua haujlwm ywj siab:
2N2222 thiab 2N222A tau siv dav hauv ntau cov hluav taws xob hluav taws xob, kab hloov mus, vhag dc. Ib qho ntxiv, no cov tub ntxhais no tseem tuaj yeem tsim kev sib tw ua ke nrog pnp trantors (xws li 2N2907 / 2N2907A), yog li nthuav tawm lawv daim ntawv thov ntau.
Nta thiab cov txiaj ntsig:
2N2222 tau paub txog nws cov peev txheej tsav tsheb tam sim no thiab muaj mob sib zog ua ke, ua rau nws haum rau cov xwm txheej uas yuav tsum tau daws cov thauj loj. Txawm li cas los xij, 2n222a yog zoo dua nyob rau hauv voltage kawg thiab ntau zaus teb, ua rau nws haum rau voltage thiab cov tseev kom muaj zog.
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