Kukho icala elinye, elinamacala amabini kunye iibhodi zesekethe zomaleko amaninzi .Inani leebhodi ze-multi-layer alikhawulelwanga.Ngoku kukho ngaphezu kwe-100-layer PCBs.IiPCBs eziqhelekileyo ezinomaleko ohlukeneyo zine umaleko kunye iibhodi ezintandathu .Ke kutheni abantu benombuzo othi "Kutheni iibhodi zePCB ezininzi zingamanani alinganayo? Xa sithetha ngokuthelekisa, iiPCB ezinamanani alinganayo zineePCB ezingaphaya kwamanani angaqhelekanga, kwaye zineenzuzo ezininzi.
1. Iindleko eziphantsi
Ngenxa yokunqongophala komaleko we-dielectric kunye ne-foil, ixabiso lemathiriyeli ekrwada yee-PCB ezinamanani angaqhelekanga lingaphantsi kancinci kunelo leePCB ezinamanani alinganayo.Nangona kunjalo, iindleko zokusetyenzwa kwee-PCB zomaleko ongaqhelekanga ziphezulu kakhulu kunezo ze-PCB ezilinganayo.Iindleko zokucutshungulwa komgangatho wangaphakathi ziyafana, kodwa i-foil / i-core structure ngokucacileyo yandisa iindleko zokulungiswa kwendawo yangaphandle. I-PCB enenombolo engaqhelekanga kufuneka yongeze inkqubo yokudibanisa i-laminated core layer bonding kwisiseko senkqubo yesakhiwo esingundoqo.Xa kuthelekiswa nolwakhiwo lwenyukliya, ukusebenza kakuhle kwemveliso yeefektri ezongeza ifoyile kwisakhiwo senyukliya kuya kuncipha.Ngaphambi kokuba i-lamination kunye ne-bonding, i-core yangaphandle idinga ukuqhutyelwa okongeziweyo, oko kwandisa umngcipheko wokukrazula kunye neempazamo zokuqhawula kumaleko angaphandle.
2. Isakhiwo sokulinganisela ukuphepha ukugoba Esona sizathu silungileyo sokungayila i-PCB enamanani angaqhelekanga kukuba inani elingaqhelekanga leebhodi zesekethe kulula ukugoba.Xa i-PCB ipholile emva kwenkqubo yokudibanisa i-multilayer yesekethe, i-tension lamination eyahlukileyo yesakhiwo esingundoqo kunye nesakhiwo se-foil-clad siya kubangela ukuba i-PCB igobe xa ipholile.Njengoko ubukhulu bebhodi yesekethe bukhula, umngcipheko wokugoba we-PCB edibeneyo enezakhiwo ezibini ezahlukeneyo uyanda.Isitshixo sokuphelisa ukugoba kwebhodi yesekethe kukwamkela isitaki esilungeleleneyo.Nangona i-PCB enomlinganiselo othile wokugoba ihlangabezana neemfuno ezibaluliweyo, ukusebenza kakuhle okulandelayo kuya kuncitshiswa, okukhokelela ekonyukeni kweendleko.Ngenxa yokuba izixhobo ezikhethekileyo kunye nobugcisa bufunekayo ngexesha lokuhlanganisana, ukuchaneka kokubekwa kwecandelo kuyancitshiswa, okuya kulimaza umgangatho.
Ukuyibeka ngenye indlela, kulula ukuyiqonda: Kwinkqubo ye-PCB, ibhodi enemigangatho emine ilawulwa ngcono kunebhodi enezintlu ezintathu, ngokukodwa ngokubhekiselele kwi-symmetry.I-warpage yebhodi ene-four-layer inokulawulwa ngaphantsi kwe-0.7% (i-IPC600 esemgangathweni), kodwa Xa ubukhulu bebhodi yebhodi emithathu inkulu, i-warpage iya kudlula lo mgangatho, oya kuchaphazela ukuthembeka kwe-SMT patch kunye imveliso yonke.Ke ngoko, umyili jikelele akayili ibhodi yomaleko enamanani angaqhelekanga, nokuba umaleko onamanani angaqhelekanga uyawuqonda umsebenzi, uya Kuyilwa njengomgangatho ongeyonyani onokubalwa ngamanani, oko kukuthi, iileya ezi-5 ziyilwe njengemigangatho emi-6. kunye ne-7 layers ziyilwe njengeebhodi ezi-8. Ngokusekwe kwezi zizathu zingasentla, uninzi lweebhodi zePCB ezinomaleko amaninzi ziyilwe zineeleya ezinamanani alinganayo kunye neeleya ezinqabileyo ezinamanani ambalwa.
Indlela yokulinganisa ukupakishwa kunye nokunciphisa iindleko zePCB enenombolo engaqhelekanga?
Kuthekani ukuba iPCB enamanani angaqhelekanga ibonakala kuyilo?
Ezi ndlela zilandelayo zinokufikelela kwi-stacking elinganayo, ukunciphisa Ukwenziwa kwePCB iindleko, kwaye uphephe PCB ukugoba.
1) Umaleko wesiginali kwaye uyisebenzise.Le ndlela ingasetyenziswa ukuba umaleko wamandla woyilo lwePCB ulinganayo kwaye umaleko wesiginali awuqhelekanga.Uluhlu olongezelelweyo alunyusi iindleko, kodwa lunokunciphisa ixesha lokuhambisa kunye nokuphucula umgangatho we-PCB. 2) Yongeza umaleko ongezelelweyo wamandla.Le ndlela ingasetyenziswa ukuba umaleko wamandla woyilo lwePCB awuqhelekanga kwaye umaleko wesiginali ulinganayo.Indlela elula kukongeza umaleko phakathi kwesitaki ngaphandle kokutshintsha ezinye izicwangciso.Okokuqala, landela uyilo lwePCB enamanani angaqhelekanga, kwaye emva koko ukope umaleko womhlaba phakathi ukuphawula umaleko oseleyo.Oku kuyafana neempawu zombane zomaleko otyebileyo wefoyile. 3) Yongeza umaleko wesignali ongenanto kufutshane nombindi wesitaki sePCB.Le ndlela inciphisa ukungalingani kokupakisha kwaye iphucula umgangatho wePCB.Okokuqala, landela iileya ezinamanani angaqhelekanga kwindlela, emva koko wongeza umaleko wesignali engenanto, kwaye uphawule izaleko eziseleyo.Isetyenziswe kwiisekethe ze-microwave kunye nemidiya edibeneyo (ii-dielectric constants ezahlukeneyo) iisekethe. 
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