Ibhodi le-PCB linongqimba olulodwa, izendlalelo ezimbili nezingqimba eziningi, phakathi kwazo okungekho mkhawulo enanini lezendlalelo zebhodi le-multilayer. Njengamanje, kunezingqimba ezingaphezu kwe-100 ze-PCB, futhi i-PCB ye-multilayer evamile iyizendlalelo ezine nezingqimba eziyisithupha. Pho kungani abantu bethi, "kungani i-PCB inezigaba eziningi ezilinganayo?" Umbuzo? Ngisho nezingqimba zinezinzuzo eziningi kunezendlalelo eziyinqaba.
1. Izindleko eziphansi
Ngenxa yongqimba olulodwa lwemidiya ne-foil, izindleko zezinto zokusetshenziswa zamabhodi e-PCB anezinombolo ezingavamile ziphansi kancane kunalezo zamabhodi e-PCB anenombolo elinganayo. Kodwa-ke, izindleko zokucubungula ze-PCB-ungqimba olungavamile ziphakeme kakhulu kune-PCB enezingqimba ezilinganayo.Izindleko zokucubungula zesendlalelo sangaphakathi ziyafana, kodwa isakhiwo se-foil/core ngokusobala sinyusa izindleko zokucubungula ungqimba lwangaphandle.
I-PCB ye-Odd-layer idinga ukwengeza inqubo yesibopho se-laminated core non-standard esisekelweni senqubo yesakhiwo senuzi.Uma kuqhathaniswa nesakhiwo senuzi, ukusebenza kahle kokukhiqiza kwesikhungo esinocwecwe lwe-foil ngaphandle kwesakhiwo senuzi kuzokwehla.Umgogodla wangaphandle udinga ukucutshungulwa okwengeziwe. ngaphambi kwe-laminating, okwandisa ingozi yokuklwebheka kanye namaphutha etch kungqimba lwangaphandle.
2. Isakhiwo sokulinganisela ukuze ugweme ukugoba
Isizathu esingcono kakhulu sokuklama i-PCBS ngaphandle kwezingqimba ezinezinombolo ezingavamile ukuthi izingqimba ezinezinombolo ezingavamile kulula ukugoba.Lapho i-PCB ipholile ngemva kwenqubo ye-multi-layer circuit bonding, ukungezwani okuhlukile kwe-laminating phakathi kwesakhiwo esiyinhloko kanye nesakhiwo esinama-foil-coated kuzobangela ukugoba kwe-PCB. Njengoba ubukhulu bebhodi bukhula, ingozi yokugoba i-PCB eyinhlanganisela enezakhiwo ezimbili ezahlukene iyakhula.Isihluthulelo sokuqeda ukugoba kwebhodi lesifunda ukusebenzisa isendlalelo esilinganiselwe.Nakuba izinga elithile lokugoba i-PCB lihlangabezana nezidingo zokucaciswa, ukusebenza kahle kokucubungula okulandelayo kuzoncishiswa, okubangele ukwanda kwezindleko.Ngenxa yokuthi umhlangano udinga imishini ekhethekile kanye nenqubo, ukunemba kokubekwa kwezingxenye kuyancipha, ngakho-ke kuzolimaza ikhwalithi.
Shintsha kulula ukuyiqonda: ohlelweni lobuchwepheshe be-PCB, ibhodi elinezingqimba ezine lingcono kunokulawula ibhodi lesendlalelo ezintathu, ikakhulukazi ngokwe-symmetry, i-warp degree yebhodi lezingqimba ezine ingalawulwa ngaphansi kwe-0.7% (IPC600 ejwayelekile), kodwa usayizi webhodi lezingqimba ezintathu, amadigri e-warp azodlula izinga, lokhu kuzothinta i-SMT nokuthembeka kwawo wonke umkhiqizo, ngakho-ke umklami ojwayelekile, akayona inombolo eyinqaba yomklamo webhodi lesendlalelo, ngisho noma kuyimisebenzi yongqimba eyinqaba, izoba yakhelwe ukwenza inkohliso ungqimba olulinganayo, i-5 iklama izendlalelo eziyisi-6, ibhodi lesendlalelo esingu-7 8.
Ngenxa yalezi zizathu ezingenhla, izingqimba eziningi ze-PCB ziklanywe njengezendlalelo ezilinganayo, futhi izendlalelo eziyinqaba zincane.