Ibhodi yesekethe iqulunqwe ngezaleko zeesekethe zefoyile yobhedu, kwaye uqhagamshelo phakathi kwamaleko esekethe ahlukeneyo kuxhomekeke kwi-via. Oku kungenxa yokuba kule mihla, ibhodi yesekethe yenziwa ngokugrumba imingxunya ukuze idibanise kumaleko esekethe ahlukeneyo. Injongo yoqhagamshelo kukuqhuba umbane, ngoko ubizwa ngokuba yi-via. Ukuze kuqhutywe umbane, umaleko wezinto zokuqhuba (ngokuqhelekileyo ubhedu) kufuneka zibekwe phezu komhlaba wemingxuma yokugaya, Ngale ndlela, ii-electron ziyakwazi ukuhamba phakathi kweefoyile ezahlukeneyo zobhedu, kuba kuphela i-resin phezu komgangatho we-drill yokuqala. umngxuma awuzukuqhuba umbane.

Ngokuqhelekileyo, sihlala sibona iindidi ezintathu ze PCB imingxuma yesikhokelo (ngendlela), echazwe ngolu hlobo lulandelayo:

Ngomngxunya: ukucakwa ngomngxuma (PTH ngokufutshane)
Olu lolona hlobo luxhaphakileyo lokudlula umngxuma. Logama nje ubambe iPCB ngokuchasene nokukhanya, unokubona ukuba umngxuma oqaqambileyo “ngumngxuma”. Oku kwakhona uhlobo olulula umngxuma, kuba xa usenza, kuyimfuneko kuphela ukusebenzisa i-drill okanye ukukhanya kwe-laser ukubhola ngokuthe ngqo yonke ibhodi yesekethe, kwaye iindleko zincinci. Nangona umngxuma wokutyhutyha unexabiso eliphantsi, ngamanye amaxesha usebenzisa indawo eninzi yePCB.

Ubumfama ngomngxuma (BVH)
Isiphaluka esingaphandle se-PCB sidityaniswe kunye nomgca ongaphakathi osondeleyo ngemingxuma e-electroplated, ebizwa ngokuba “yimingxuma eyimfama” kuba icala elichaseneyo alinakubonwa. Ukuze kwandiswe ukusetyenziswa kwendawo yomaleko wesekethe ye-PCB, inkqubo “yomngxuma oyimfama” yaphuhliswa. Le ndlela yokuvelisa idinga ukuhlawula ingqalelo ekhethekileyo kubunzulu obufanelekileyo bomngxuma we-drill (Z-axis). Iingqungquthela zeesekethe ezifuna ukudibaniswa zinokudibaniswa kwiingqungquthela zeesekethe zomntu ngamnye kwangaphambili, kwaye ziboshwe. Nangona kunjalo, indawo echanekileyo ngakumbi kunye nesixhobo sokulungelelanisa siyafuneka.

Ungcwatywa ngomngxuma (BVH)
Nawuphi na umaleko wesekethe ngaphakathi kwiPCB uqhagamshelwe kodwa awuqhagamshelwanga kumaleko angaphandle. Le nkqubo ayinakufezekiswa ngokusebenzisa indlela yokugaya emva kokudibanisa. Ukugaya kufuneka kwenziwe ngexesha leeleyile zeesekethe zomntu ngamnye. Emva kokubambisana kwendawo yendawo yangaphakathi, i-electroplating kufuneka iqhutywe phambi kwayo yonke into. Kuthatha ixesha elide kunelokuqala “ngemingxuma” kunye “nemingxuma eyimfama”, ngoko ke ixabiso likwabiza kakhulu. Le nkqubo iqhele ukusetyenziselwa kuphela uxinano oluphezulu (HDI) Iibhodi zeesekethe ezishicilelweyo ukwandisa isithuba esisebenzisekayo sezinye iileya zesekethe.