Kwilizwe lanamhlanje ledijithali, isantya yeyona nto iphambili kunye nebalulekileyo ephucula ukusebenza kwemveliso iyonke. Ke, ukongeza kwisantya esandayo somqondiso, inani elikhulu loyilo lwe-elektroniki ligcwalisiwe ngeendlela ezininzi zokuhamba ngesantya esiphezulu, kwaye ukwanda kwesantya somqondiso kwenza PCB Uyilo kunye nokufaka iintambo kwisiseko sendlela yokusebenza kwenkqubo yonke. Ubuninzi obukhulayo bezinto ezintsha ze-elektroniki kukhokelele ekwandeni kwemfuno yokwenziwa kwe-PCB enesantya esiphezulu kunye neetekhnoloji zendibano ezifanelene kakhulu neemfuno ezintsonkothileyo zePCB, kubandakanya nesidingo sokunciphisa ingxolo engaphakathi kwi-PCB. Ingxolo kwibhodi yesekethe eprintiweyo yeyona nto iphambili echaphazela ukusebenza kwenkqubo yonke. Le bhlog ijolise kwiindlela kunye neendlela zokunciphisa ingxolo yebhodi kwi-PCB ekhawulezayo.

Uyilo lwe-PCB oluqinisekisa ukuphuculwa kokuthembeka kuya kuba nenqanaba eliphantsi kunye nengxolo yebhodi kwi-PCB. Uyilo lwe-PCB linyathelo elibalulekileyo ekufumaneni iinkonzo ze-PCB ezomeleleyo, ezingenangxolo, kunye nokusebenza koyilo lwe-PCB kube yinto ephambili. Ukuza kuthi ga ngoku, izinto ezibalulekileyo zibandakanya uyilo lweesekethe olusebenzayo, imicimbi yokunxibelelana nokunxibelelana, izinto zeparasitic, ukudibanisa kunye neendlela zokuyila uyilo lwePCB olusebenzayo. Eyokuqala sisakhiwo esinovakalelo kunye neendlela zokwenza iintambo – iziporo zomhlaba kunye nengxolo yomhlaba, ukuphambuka kwamandla, imedance yesekethe ephezulu, imigca yokuhambisa kunye nokubiyelwa okungaphakathi. Kwiimfuno eziphakamileyo zokuhamba kwesantya sesiginali esheshayo kwisekethe,

Iindlela zoyilo zokuphelisa ingxolo ebhodini kwi-PCB yesantya esiphezulu

Ingxolo kwi-PCB inokuchaphazela kakubi ukusebenza kwe-PCB ngenxa yokuhla kwamandla ombane kunye nemilo yangoku. Funda amanyathelo athile okuthintela iimpazamo ezinokunceda ukuphucula ukusebenza kunye nokuthintela ingxolo evela kwi-PCB ekhawulezayo.

L Nciphisa umnqamlezo

I-Crosstalk iyinto engafunekiyo eyenziweyo kunye nokuhlangana kombane phakathi kweentambo, iintambo, iindibano zekhebula, kunye nezinto ezinxulumene nokusasazwa kwentsimi ye-electromagnetic. ICrosstalk ixhomekeke ikakhulu kubuchule bendlela. I-Crosstalk ayinakufane yenzeke xa iintambo zihanjiswa ecaleni. Ukuba iintambo ziyahambelana enye nenye, i-crosstalk kunokwenzeka ukuba yenzeke ukuba amacandelo angagcinwa mafutshane. Ezinye iindlela zokuphepha i-crosstalk kukunciphisa ukuphakama kwe-dielectric kunye nokunyusa isithuba phakathi kweentambo.

L Amandla omqondiso wokuqina

Iingcali zoyilo lwe-PCB kufuneka ziqwalasele ngononophelo umqondiso kunye neendlela zokuthembeka kwamandla kunye namandla e-analog yoyilo olukhawulezayo lwePCB. Enye yezinto eziphambili kuyilo lwesantya esiphezulu se-SI kukukhethwa ngokuchanekileyo kwemigca yokuhambisa uyilo lwe-PCB ngokusekwe kwisantya somqondiso, umqhubi we-IC, kunye nezinye izinto eziyinkimbinkimbi eziyinceda ukunqanda ingxolo ye-PCB ebhodini. Isantya somqondiso siyakhawuleza. Ukunyaniseka kwamandla (i-PI) kukwayinxalenye ebalulekileyo yomgaqo-nkqubo ofunekayo wokuphumeza uyilo olukhawulezayo lwe-PCB olucutha ingxolo kunye nokugcina inqanaba lokuqina kozinzo lombane kwiphedi ye-chip.

L Thintela iindawo ezibandayo zokuwelda

Inkqubo ye-welding engachanekanga inokubangela iindawo ezibandayo. Amalungu abandayo e-solder anokubangela iingxaki njengokuvuleka okungaqhelekanga, ingxolo emileyo njalo njalo. Kulungile! Ukuthintela iingxaki ezinjalo, qiniseka ukutshisa i-iron ngokufanelekileyo kubushushu obuchanekileyo. Incam yencam yentsimbi kufuneka ibekwe kwilunga le-solder ukuyitshisa ngokufanelekileyo ngaphambi kokufaka isicelo kwi-solder joint joint. Uya kubona ukunyibilika kubushushu obufanelekileyo; I-solder igubungela ngokupheleleyo ukudibana. Ezinye iindlela zokwenza lula ukuwelda kukusebenzisa ukuhamba.

L Ukunciphisa i-radiation ye-PCB ukufezekisa uyilo lwengxolo ye-PCB esezantsi

Uyilo olaminethiweyo lwezibini ezikufutshane nolayini lukhetho olufanelekileyo lwesekethe ukunqanda ingxolo ebhodini kwi-PCB. Ezinye izinto ezifunekayo ekuphumezeni uyilo lwe-PCB olunengxolo ephantsi kunye nokunciphisa ukukhutshwa kwe-PCB kubandakanya ithuba eliphantsi lokwahlula-hlula, ukongezwa kwesixokelelwano sokuchasana nesiphelo, ukusetyenziswa kwee-capacitors zokudibanisa, ukwahlula i-analog kunye nomhlaba wedijithali, kunye nokubekwa wedwa kwe-I / O imimandla kunye nokucima ibhodi okanye umqondiso ebhodini uzilungele iimfuno ze-PCB ezinengxolo ephantsi.

Ukuphumeza ngokupheleleyo zonke ezi ndlela zingasentla kunye nokugcina engqondweni iimfuno ezizodwa zoyilo lwayo nayiphi na iprojekthi ye-PCB, phantse ukuyila i-PCB engenamsindo akuqinisekanga. Ukuze ube nokukhetha okwaneleyo ukufumana i-PCB engenamxholo kwi-EMS, yiyo loo nto sicebise ngeendlela ezahlukeneyo ukunqanda ingxolo ebhodini kwi-PCB ekhawulezayo.