Inokubonwa ukuba kukho imingxuma emininzi emikhulu kunye encinci kwibhodi yesekethe, kwaye kunokufunyanwa ukuba kukho imingxuma eninzi, kwaye umngxuma ngamnye wenzelwe injongo yawo. Le mingxunya inokohlulwa ngokwesiseko ibe yiPTH (Plating through Hole) kunye neNPTH (Non Plating through Hole) icwecwe ngomngxuma, kwaye sithi “ngomngxunya” kuba isuka kwelinye icala lebhodi iye kwelinye, enyanisweni ukongeza kumngxuma kwibhodi yesekethe, kukho eminye imingxunya engekho ngebhodi yesekethe.
Amagama ePCB: ngomngxuma, umngxuma oyimfama, umngxuma ongcwatywe.
1. Ukwahlula njani i-PTH kunye ne-NPTH kwimingxuma?
Inokugwetywa ukuba kukho amanqaku aqaqambileyo e-electroplating eludongeni lomngxuma. Umngxuma onamanqaku e-electroplating yi-PTH, kwaye umngxuma ngaphandle kwamanqaku e-electroplating yiNPTH. Njengoko kubonisiwe kumfanekiso ongezantsi:
2. IUUbulumko be-NPTH
Kufunyaniswa ukuba i-aperture ye-NPTH idla ngokuba nkulu kune-PTH, kuba i-NPTH isetyenziswa kakhulu njenge-screw yokutshixa, kwaye enye isetyenziselwa ukufakela uxhulumaniso oluthile ngaphandle kokudibanisa okusisigxina. Ukongeza, ezinye ziya kusetyenziswa njengesixhobo sovavanyo kwicala leplate.
3. Ukusetyenziswa kwe-PTH, Yintoni i-Via?
Ngokuqhelekileyo, imingxuma ye-PTH kwibhodi yesiphaluka isetyenziswe ngeendlela ezimbini. Enye isetyenziselwa ukuwelda iinyawo zeendawo zeDIP zesintu. I-aperture yale mingxuma kufuneka ibe mkhulu kunobubanzi beenyawo ze-welding zamacandelo, ukwenzela ukuba iindawo zifakwe kwimingxuma.
Enye iPTH encinci, edla ngokubizwa ngokuba nge (umngxuma wokuqhuba), isetyenziselwa ukudibanisa kunye nokuqhuba ibhodi yesekethe (PCB) phakathi kwamaleko amabini okanye ngaphezulu kumgca wefoyile yobhedu, kuba iPCB yenziwe ngamaleko amaninzi obhedu afunjwe, umaleko ngamnye wobhedu. ubhedu (ubhedu) luya kuhlanjululwa ngoluhlu lwe-insulation layer, oko kukuthi, umaleko wobhedu awukwazi ukunxibelelana omnye nomnye, Ukudityaniswa komqondiso wayo kudlula, yingakho kuthiwa "dlula umngxuma" ngesiTshayina. Via ngenxa yokuba imingxuma ayibonakali ngokupheleleyo ngaphandle. Ngenxa yokuba injongo ye-via kukuqhuba ifoyile yobhedu yeeleya ezahlukeneyo, ifuna ukwenziwa kwe-electroplating, ngoko ke luhlobo lwe-PTH.
