I-PCB luhlobo lwamacandelo e-elektroniki, ikwangumthwali we-PCBA yonke, ezinye iinxalenye ze-elektroniki zifakwe kwi-PCB pad, zidlala umsebenzi wazo wonxibelelwano ngombane.
Iphetshi kufuneka isetyenziswe PCB.I-PCB kwimveliso ephuma ngokubanzi kukho ukupakishwa kwevacuum, kwikhetha kwaye ubeke umatshiniisiziba phambi kokuba imfuneko yokubhaka pcb?
Ngokusisiseko ukubhaka kwi-welding elandelayo kuya kuba ngcono.
Kuthatha ixesha elingakanani ukubhaka iPCB?
Kufuneka yahlulwe ngokwexesha PCB yokugcina.
Kwi-PCB egcinwe kwiinyanga ezi-1-2, ukubhaka malunga neyure ye-1 kudla ngokwaneleyo.
Ukugcinwa kwePCB ngaphantsi kweenyanga ezi-6, ukubhaka ngokubanzi malunga neeyure ezi-2 kunokuba.
Ukugcinwa kweenyanga ezingaphezu kwe-6, iinyanga ezili-12 ngaphantsi kwe-pcb, ukubhaka ngokubanzi malunga neeyure ze-4.
Ngaphezulu kweenyanga ezili-12 zexesha lokugcinwa, kucetyiswa ngokubanzi ukuba ungasebenzisi.
Leliphi iqondo lokubhaka elifanelekileyo?
Ubushushu bokubhaka ngokwemigaqo kwi-120 ℃, kuba injongo yokubhaka kukususa ukufuma, nje ukuba ngaphezulu kobushushu bomphunga womphunga wamanzi bunokubakho, ngokubanzi 105 ℃ ukuya kwi-110 ℃ ingaba.
Kutheni ukubhaka, akukho kubhaka kuya kuzisa yiphi ingozi?
Kutheni PCB yokubhaka, kukususa ukufuma kunye nokufuma.Ngenxa yokuba i-PCB yibhodi ye-multilayer elaminated kunye, igcinwe kwindawo yendalo kuya kubakho umphunga wamanzi omninzi, umphunga wamanzi uya kuncanyathiselwa kumphezulu we-pcb okanye ukugrumba ngaphakathi.
Ukuba ayibhakwanga, umphunga wamanzi kwireflow oveni-soldering ukufudumala okukhawulezileyo, umphunga wamanzi ufikelela kwi-100 ℃, iya kuvelisa i-thrust eninzi, ukuba ayibandakanywanga ngexesha elifanelekileyo, i-pcb iya kugqabhuka okanye yonakalise i-circuitry yangaphakathi, ibangele isiphaluka esifutshane okanye ukusetyenziswa okulandelayo kwenkqubo yeengxaki ezimbi eziphazamisayo.
Ukubhaka kwePCB kufuneka kupakishwe njani?
Ngokubanzi obhityileyo kunye nobungakanani enkulu pcb ayikhuthazwa ukuba abeke nkqo, kuba kulula ekwandiseni ubushushu ekubhaka kwaye ke ukupholisa shrinkage ebandayo, kubangele micro-deformation.
Iibhodi ezincinci zicetyiswa ukuba zibekwe, kodwa kungcono ukuba ungafaki kakhulu, ukuphepha i-pcb yokubhaka umphunga wangaphakathi wamanzi akukho lula ukukhupha.
Amanqaku kwi-PCB yokubhaka
Emva kokubhaka i-PCB, kwilungiselelo lokupholisa kufuneka libekwe xa ubunzima boxinzelelo lokuphepha ukuguqulwa kwe-micro-deformation.
I-oven ye-pcb kufuneka imiswe ngaphakathi kwesixhobo sokukhupha ukunqanda ukuvela komphunga wokufuma kwi-oven ayikwazi ukukhutshwa.
Ixesha lokuposa: Aug-11-2023