Ibhodi yesekethe eprintiweyo yenziwe ngoomaleko beesekethe zefoyile yobhedu, kwaye imidibaniso phakathi kwamaleko esekethe ahlukeneyo ixhomekeke kwezi "vias".Oku kungenxa yokuba ukuveliswa kwebhodi yesekethe yanamhlanje isebenzisa imingxuma egrunjiweyo ukudibanisa iisekethe ezahlukeneyo.Phakathi kweengqimba zeesekethe, kufana nomjelo wokudibanisa weendlela ezininzi zamanzi angaphantsi komhlaba.Abahlobo abaye badlala umdlalo wevidiyo "uMzalwana uMariya" banokuqaphela ukudityaniswa kwemibhobho yamanzi.Umahluko kukuba imibhobho yamanzi efunekayo ukuvumela ukuba amanzi ajikeleze ( Ayizukwenziwa uMzalwan’ uMary), kwaye injongo yoqhagamshelo lwebhodi yesekethe kukuqhuba umbane kwiimpawu zombane, ngoko ke kubizwa ngokuba yi- via hole, kodwa ukuba usebenzisa kuphela i-drill okanye i-laser ukumba umngxuma, ayiyi kuqhuba umbane.Ngoko ke, umaleko wezinto conductive (ngokuqhelekileyo "ubhedu") kufuneka electroplated kumphezulu umngxuma egrunjiweyo, ukuze elekhtroni akwazi ukuhamba phakathi kwamaleko ifoyile yobhedu ezahlukeneyo, ngenxa yokuba umphezulu umngxuma original umngxuma kuphela intlaka engenzi. ukuqhuba umbane we.
Ngomngxuma: UkuTyala ngomngxuma obizwa ngokuba yi-PTH
Olu lolona hlobo luxhaphakileyo lwendlela edlula umngxuma.Kufuneka uthabathe i-PCB kuphela kwaye ujongane nokukhanya, umngxuma onokubona ukukhanya okuqaqambileyo "ngomngxuma".Olu lolona hlobo lulula lomngxuma, kuba xa uyenza, kufuneka usebenzise i-drill kuphela okanye i-laser ukubhola ngokuthe ngqo ibhodi yesekethe, kwaye iindleko zincinci.Kodwa kwelinye icala, ezinye iileya zesekethe akufuneki zidibanise ezi ngokusebenzisa imingxunya.Ngokomzekelo, sinendlu enemigangatho emithandathu.Ibhere elisebenzayo linemali eninzi.Ndithenge umgangatho wayo wesithathu nowesine.Emva koko, ibhere esebenzayo ngokwayo ikumgangatho wesithathu.I-staircase yenzelwe phakathi komgangatho wesine ukunxibelelana kunye, kwaye ibhere esebenzayo ayifuni ukudibanisa neminye imigangatho.Ngeli xesha, ukuba enye i-staircase yenzelwe ukudlula kumgangatho ngamnye ukusuka kumgangatho wokuqala ukuya kumgangatho wesithandathu, iya kuchithwa.Ngebhodi yesekethe yangoku Intshi yegolide akufanele ivunyelwe.Ke nangona imingxunya ingabizi kakhulu, ngamanye amaxesha basebenzisa indawo eninzi yePCB.
Umngxuma oyimfama: Imfama ngeHole (BVH) Isiphaluka esingaphandle se-PCB sidityaniswe kumgangatho ongaphakathi osondeleyo kunye nomngxuma odibeneyo, kodwa awukho, kuba icala elichaseneyo alinakubonwa, ngoko libizwa ngokuba "yimbobo eyimfama".Ukuze kwandiswe ukusetyenziswa kwendawo yomaleko wesekethe yePCB, kuye kwavela inkqubo "eyimfama ngokudlula".Le ndlela yokuvelisa idinga ingqalelo ekhethekileyo kubunzulu bokomba (i-Z axis) ukuba ilungile, kodwa le ndlela ihlala ibangela ubunzima kwi-electroplating emngxunyeni, ngoko ke akukho mvelisi owamkeleyo. Kwakhona kunokwenzeka ukuba ubhobhoze imingxuma kwiileyile zesekethe ezifuna ukudityaniswa kumacandelo esekethe ngamnye kwangaphambili, kwaye emva koko udibanise.Ibhodi ye-2 + 4 ivuliwe, kodwa oku kufuna indawo echanekileyo kunye nesixhobo sokulungelelanisa. Thatha lo mzekelo ungasentla wokuthenga isakhiwo.Indlu enemigangatho emithandathu inezinyuko kuphela ezidibanisa umgangatho wokuqala kunye nowesibini, okanye izinyuko ezidibanisa umgangatho wesihlanu ukuya kumgangatho wesithandathu, ezibizwa ngokuba yimingxuma eyimfama. "Imingxuma eyimfama" yimingxuma enokuthi ibonakale ukusuka kwelinye icala lokubonakala kwebhodi, kodwa kungekhona kwelinye icala lebhodi.
Ungcwatywa ngendlela: Ungcwatywa ngeHole (BVH) Nawuphi na umaleko wesekethe ngaphakathi kwiPCB uqhagamshelwe kodwa awuqhagamshelwanga kumaleko angaphandle.Le nkqubo ayinakufezekiswa ngokubhoboza emva kokudibanisa.Kufuneka ibhorwe kwiileyile zeesekethe zomntu ngamnye.Emva kokuba umaleko wangaphakathi udityaniswe ngokuyinxenye, kufuneka ufakwe i-electroplated ngaphambi kokuba udityaniswe ngokupheleleyo.Xa kuthelekiswa neyokuqala "ngomngxunya" Kwaye "imingxuma eyimfama" inzima kakhulu, ngoko ke ixabiso libiza kakhulu.Le nkqubo idla ngokusetyenziselwa kuphela iibhodi zeesekethe eziphezulu (HDI) ukunyusa indawo enokusetyenziswa kwezinye iileyile zesekethe.Thatha umzekelo wokuthenga isakhiwo esingentla.Indlu enemigangatho emithandathu kuphela inezinyuko ezidibanisa umgangatho wesithathu nowesine, ezibizwa ngokuba yimingxuma engcwatyiweyo. "Umngxuma ongcwatywe" uthetha ukuba umngxuma awukwazi ukubonakala kwimbonakalo yebhodi, kodwa umngxuma wangempela ungcwatywe kwinqanaba elingaphakathi lebhodi yesekethe.
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