Nyob rau hauv daim ntawv loj loj ntawm cov khoom siv hluav taws xob niaj hnub no, cov ntawv luam tawm hauv Circuit Court boards (PCBs) luv luv thaum circuits yuav tsum nqa kaum, pua, lossis ntau txhiab amperes tam sim no, lossis ua haujlwm ruaj khov hauv qhov chaw hnyav nrog qhov kub thiab txias. Thick tooj liab PCBs ua lub luag haujlwm tseem ceeb hauv cov ntsiab lus no. Lawv tsis yog tsuas yog cov channel tam sim no tab sis kuj yog lub hauv paus ruaj khov rau kev ntseeg siab thiab ruaj khov ntawm tag nrho cov kab ke.
Dab tsi yog Thick Copper PCB?
Ib txwm PCBs feem ntau muaj tooj liab ntawv tuab ntawm 1 ooj (kwv yees li 35 micrometers) txog 2 ooj (kwv yees li 70 micrometers). Thick tooj liab PCBs, feem ntau txhais nyob rau hauv kev lag luam, yog Circuit Court boards nrog tooj liab thicknesses ntawm 3 ooj (kwv yees li 105 micrometers) los yog ntau tshaj nyob rau hauv ib qho ntawm lawv Circuit Court txheej. Cov kev txwv sab saud ntawm lawv cov peev txheej tsim khoom yog qhov ntsuas ntsuas lub zog thev naus laus zis ntawm PCB chaw tsim khoom; Tam sim no, cov tuam txhab lag luam siab heev tuaj yeem tsim cov khoom lag luam nrog cov thicknesses ntawm 20 ooj (kwv yees li 700 micrometers) los yog tuab dua.
Lub ntsiab kom zoo dua ntawm qhov tsim no yog nyob rau hauv nws superior tam sim no - nqa peev xwm thiab kub dissipation kev ua tau zoo. Raws li cov qauv, lub peev xwm nqa tam sim no yog ncaj qha proportional rau tus ntoo khaub lig -sectional cheeb tsam ntawm daim ntawv tooj liab. Doubling lub thickness ntawm tooj liab txhais tau hais tias ib tug tseem ceeb nce nyob rau hauv lub tam sim no uas yuav tsum tau xyuam xim nqa los ntawm cov conductors ntawm tib linewidth. Qhov no tso cai rau kev xa hluav taws xob ntau dua nrog qhov chaw nqaim dua, lossis qis dua kev ua haujlwm kub thiab muaj kev ntseeg siab dua ntawm tib lub sijhawm tam sim no.
Kev tsim cov kev sib tw thiab cov txheej txheem tseem ceeb ntawm Thick Copper PCBs
Kev tsim cov tooj liab PCBs tsis yog tsuas yog ib qho teeb meem ntawm thickening cov ntawv ci tooj liab; nws muaj cov txheej txheem kev sib tw thiab kev daws teeb meem.
Kev Sib Tw ntawm Cov Qauv Etching: Cov txheej txheem etching yog zoo li carving, yuav tsum tau tshem tawm cov tsis xav tau tooj liab thaum ua kom cov phab ntsa ntawm cov tuab tooj liab conductors yog ntsug thiab du. Cov tshuaj etching ib txwm tuaj yeem ua rau "sab etching" hnyav ntawm cov tooj liab tuab, ua rau dhau -etching ntawm tus neeg xyuas pib hauv qab thiab ua rau "nceb- zoo li" profile, cuam tshuam qhov tseeb. Qhov kev daws teeb meem yog siv cov cuab yeej sib txawv etching thiab tshwj xeeb resists, ua tiav cov qauv zoo meej Circuit Court nrog kev sib piv siab los ntawm kev tswj cov concentration, siab, thiab lub kaum sab xis ntawm cov tshuaj etching.
Qhov Kev Sib Tw ntawm Lamination Filling: Thaum lub sij hawm lamination ntawm multilayer tuab copper PCBs, lub prepreg (PP) resin yuav tsum tau ua kom tiav cov qhov khoob loj ntawm cov circuits. Kev sau tsis txaus yuav ua rau muaj qhov tsis xws luag xws li npuas thiab delamination. Yog li ntawd, cov tuam ntxhab yuav tsum tau siv cov ntawv tshwj xeeb PP nrog cov ntsiab lus siab thiab tuaj yeem ua ntau yam laminations lossis ntxiv cov txheej txheem dielectric los xyuas kom meej tias cov txheej txheem dielectric tsis zoo thiab tsis muaj dab tsi -dawb, ua tiav cov rwb thaiv tsev thiab kev sib txuas.
Kev Sib Tw ntawm Drilling thiab Hole Metallization: Drilling qhov nyob rau hauv cov phaj tooj liab tuab, tshwj xeeb tshaj yog los ntawm ntau txheej tooj liab, ua rau muaj kev cuam tshuam tseem ceeb ntawm lub laum me ntsis. More importantly, when completing hole metallization (electroplating), it is essential to ensure that a uniform and dense copper layer is deposited on the hole wall to achieve reliable interconnection of interlayer circuits. Qhov no yuav tsum tau ua kom zoo dua cov mis electroplating thiab qhov ntom ntom tam sim no, thiab siv cov txheej txheem xws li pulse electroplating los tiv thaiv "dog pob txha nyhuv"- qhov twg cov txheej tooj liab ntawm lub qhov qhib yog tuab heev thiab cov txheej tooj liab nyob rau hauv nruab nrab ntawm lub qhov yog nyias heev - xyuas kom meej ntawm phab ntsa.
Cov Khoom Siv Tseem Ceeb: Cov khoom tshwj xeeb ntawm cov tuab tooj liab PCBs ua rau lawv "lub plawv" thiab "cov hlab ntsha" ntawm ntau daim ntawv thov:
High- Cov Khoom Siv Hluav Taws Xob: Cov khoom siv hluav taws xob muaj hluav taws xob, cov khoom siv hluav taws xob rau cov khoom siv hluav taws xob, cov khoom siv vuam, thiab cov tshuab hluav taws xob photovoltaic yog ib qho ntawm nws cov xwm txheej feem ntau siv.
Automotive Electronics: Cov maub los ntawm lub cev muaj zog, ntawm - lub tsheb chargers (OBCs), thiab roj teeb tswj tshuab (BMS) hauv cov tsheb tshiab muaj zog muaj qhov xav tau siab heev rau lub zog ntom ntom thiab cov cua sov.
Kev tswj fais fab thiab kev xa mus: Ua lub luag haujlwm tseem ceeb hauv cov hluav taws xob hluav taws xob, kev xa hluav taws xob, thiab hluav taws xob xa hluav taws xob hauv kev tsheb ciav hlau thiab cov phiaj xwm ntse.
Tub Rog thiab Aerospace: Radar systems, kev sib txuas lus hauv paus chaw nres tsheb, thiab lwm yam khoom siv yuav tsum muaj kev tiv thaiv huab cua, ua rau lub zog thiab kev ntseeg siab ntawm cov tooj liab PCBs tsis muaj qhov tseem ceeb.
Xaus: Thick tooj liab PCB kev tsim khoom sawv cev rau kev sib sib zog nqus ntawm cov ntaub ntawv tshawb fawb, tshuaj engineering, thiab kev tswj xyuas qhov tseeb. Nws hla lub peev txheej ntawm cov qauv PCBs, ua cov cuab yeej tshwj xeeb tshwj xeeb tsim los daws cov teeb meem ntawm lub zog siab, kub kub, thiab kev ntseeg siab. Nrog rau txoj kev loj hlob sai ntawm lub tsheb fais fab, lub zog tauj dua tshiab, thiab Kev Lag Luam 4.0, qhov kev thov rau tuab tooj liab PCBs yuav loj hlob mus ntxiv, tsav cov txheej txheem tsim khoom no mus rau qhov siab tshiab thiab muab cov khoom siv lub cev zoo tshaj plaws rau "lub zog" ntawm cov cuab yeej siv niaj hnub no.