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 yi-PTH (Plating Through Hole) kunye neNPTH (Non Plating Through Hole) icwecwe ngomngxuma, kwaye sithi “ngomngxuma” kuba ngokoqobo isuka kwelinye icala lebhodi ukuya kwelinye, Enyanisweni, ukongeza kumngxuma wokuphumela kwibhodi yesekethe, kukho eminye imingxuma engekhoyo 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 i-PTH encinci, edla ngokubizwa ngokuba nge (umngxuma wokuqhuba), isetyenziselwa ukudibanisa kunye nokuqhuba ibhodi yesekethe (PCB) phakathi kweengqimba ezimbini okanye ngaphezulu zomgca we-foil yobhedu, ngenxa yokuba i-PCB yenziwe ngamaleko amaninzi obhedu ahlanganiswe, umaleko ngamnye wobhedu (ubhedu) uya kugaywa ngomaleko wokugquma, oko kukuthi, umaleko wobhedu awukwazi ukunxibelelana ngesixhobo esibizwa ngokuba "ngomngxuma" obizwa ngokuba yi "unxibelelwano". IsiTshayina. 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.
