Pampiri ena e supa ka ho hlaka mathata a amanang le mongobo ho boto ea potoloho e hatisitsoeng. Ena ke sengoloa se nepahetseng mabapi le ho fokotsa litlamorao tsa mongobo ho mofuta ofe kapa ofe oa boto ea potoloho e hatisitsoeng. Ho tloha ho fusion ea lintho tse bonahalang, moralo oa PCB, prototyping, boenjineri ba PCB, kopano ka ho paka le ho tsamaisa mekhahlelo ea taolo, tlhokomelo e lokela ho lefuoa molemong oa mongobo o hlahisoang ke PCB ho qoba tšenyo le mathata a mang ka ts’ebetso ea PCB. Ntle le moo, re fe leseli la mehato ea bohlokoa ea ho laola maemo a mongobo nakong ea ho lamination, litsamaiso tse kentsoeng tšebetsong nakong ea kopano ea PCB le taolo ea polokelo, ho paka le ho tsamaisa.

Likopano tsa boto ea potoloho tse thata / tse tenyetsehang, mekotla ea likhechana, likopano tsa mabokose kapa litheko tsa terata Likopano tsa PCB li entsoe ka mefuta e fapaneng ea lisebelisoa tse lumellanang ka botlalo le thepa e hlokahalang bakeng sa ts’ebetso e matla ea mochini le ea motlakase ho elektroniki e sebelisoang liindastering tsohle tse kholo lefatšeng ka bophara. Ho hloka maqhubu a phahameng, impedance tlaase, compactness, durability, phahameng tensile matla, tlaase boima, tenyetseha, taolo mocheso kapa ho hanyetsa mongobo, le PCB ka ba le ‘ngoe, habeli kapa selotlolo lera, ho itšetlehile ka ho rarahana ea potoloho ea. Ho mathata ohle a tebileng a lokelang ho hlokomeloa methating ea pele ea tlhahiso ea PCB, mongobo kapa mongobo ke lona lebaka le leholo le lebisang ho hlahiseng sebaka sa ho hloleha ha elektroniki le mochini ts’ebetsong ea PCB.

Phello ea mongobo ho PCB ke efe

Mongobo o ka baka mathata a maholo joang ho liboto tsa potoloho tse hatisitsoeng?

Ka ho ba teng ho li-prepo tsa khalase ea epoxy, e hasana ho PCBS nakong ea polokelo, ‘me ha e kenella, mongobo o ka theha litšitiso tse fapaneng likopanong tsa PCB. Nako ea ts’ebetso ea metsi ho hlahisoeng ha PCB e teng ho li-microcracks kapa e ka theha ntlo ho segokanyipalo sa lehoakhoa. Ka lebaka la mocheso o phahameng le khatello ea mouoane e tšoanang le sebopeho sa quadcopter kopanong ea PCB, ho monya metsi ho bakoa.

Ha ho hloleha ha sekgomaretsi le momahanyo libotong tsa potoloho tse hatisitsoeng ho lebisa ho delamination kapa ho petsoha, mongobo o ka etsa hore phallo ea tšepe e khonehe, e lebisang tseleng e tlase ea tšitiso bakeng sa liphetoho tsa botsitso. Ha phokotso ea mocheso oa khalase oa phetoho, keketseho ea ts’oaetso ea dielectric khafetsa le tšenyo e ngoe ea mahlale, e tla lebisa ho phokotso ea lebelo la potoloho le ho lieha ha nako ea ho hasanya.

Phello e kholo ea mongobo ho PCBS ke hore e fokotsa boleng ba metallization, lamination, solder resistance film le li-process tsa PCB tsa tlhahiso. Ka lebaka la tšusumetso ea mongobo, moeli oa khatello ea mocheso o feteletseng ha mocheso oa khalase o fetoha. Ka linako tse ling e ka baka lisekete tse khuts’oane tse matla tse lumellang metsi ho kena, e lebisang ho ts’enyeho ea ion. Lintho tse ling tse tloaelehileng tsa thepa ea hygroscopic likopanong tsa boto ea potoloho ea PRINTED li kenyelletsa ho fokola ha malakabe kapa lamination, factor dissipation factor (DF) le dielectric constant (DK), khatello ea mocheso e koahetsoeng ka masoba, le oxidation ea koporo.

Mekhoa ea ho fokotsa mongobo tlhahiso ea PCB:

Hore na tlhahiso ea PCB e sebelisa mekhoa e bonolo kapa e rarahaneng, ho na le ts’ebetso e ngata ho boenjineri ba PCB e hlokang lits’ebetso tse metsi le ho tlosoa ha mongobo o setseng. Lisebelisoa tse tala tse sebelisitsoeng tlhahisong ea PCB li hloka ho sireletsoa nakong ea polokelo, ts’ebetso le khatello ea maikutlo nakong ea kopano ea PCB. Se latelang ke tataiso e khuts’oane ea ho kenya tšebetsong taolo maemong ohle a ts’ebetso ea PCB:

1. hlotsoe

Lamination ke mohato oa ho felloa ke metsi ‘meleng o hlahisoang ke PCB hobane li-billet tsa mantlha le tsa prereg li kopantsoe hammoho ho kopanya likarolo ho laminate. Lintlha tsa mantlha tse laoloang ts’ebetsong ea lamination ke mocheso, nako e fetileng le sekhahla sa ho futhumatsa. Ka linako tse ling ha ho omella ho le tlase, ho nkuoa mehato ea ho fokotsa lephaka ho fokotsa monyetla oa likheo tsa ka hare tse hohelang monya. Ka hona, ts’ebeliso ea liatlana ha o sebetsana le li-prepregs e fana ka taolo e ntle ea maemo a mongobo. Sena se fokotsa tšilafalo ea sefapano. Likarete tse sa senyeheng tsa mongobo li lokela ho ba le maemo a ho rarolla maemo a mongobo ha ho hlokahala. Laminate li lokela ho hlatsuoa ka lipotoloho tse khutšoane ebe li bolokoa hantle tikolohong e laoloang, e thusang ho thibela mekotla ea mongobo ho theha laminate.

2. Post thulaganyou e lamination le kopano PCB

Kamora ho cheka, ho nka litšoantšo tsa lifoto, le ts’ebetso ea mananose tlhahiso ea PCB, sekhahla sa ho monya mongobo se hapiloeng ts’ebetsong ea metsi se phahame. Ho pheha ha skrine ho hatisa le ho tjheseletsa mask ke mehato e sebetsoang ho kokobetsa mongobo oa entrainment. Sena se sebetsa hantle haholo ho fokotsa maemo a ho monya metsi ka ho fokotsa nako ea nako ea ho ts’oara lipakeng tsa mehato esita le ho tsamaisa ka cheseho maemo a polokelo. Ka ho netefatsa hore PCB e omme ka ho lekana methating ea pele ea ho lamination, boto e ka thusa ho fokotsa ts’ebetso ea ho baka ka mor’a ho lamination. Ntle le moo, qetello ea boleng bo holimo e sebelisoa ho thibela mapetso nakong ea ho cheka le ho tlosa mongobo masaleng ka ho baka pele ho ts’ebetso ea ho chesa moea o chesang. Nako ea ho baka e lokela ho bolokoa ka ho ela hloko boemo bo ikemiselitseng ba mongobo, ho rarahana ha tlhahiso ea PCB, kalafo ea holim’a metsi ea PCB le botenya bo lekaneng bo hlokahalang bakeng sa boto.

Ka hona, ho bohlokoa ho tseba maemo a morao-rao a phello ea mongobo tlhahiso ea PCB ho qoba ho hloleha, tšenyo le potoloho e khuts’oane ho PCB, ha o ntse o eketsa litšenyehelo tsa ho sebetsa bocha. Hona joale, bafuputsi ba makhatheng a ho hlahisa litharollo tse tsoetseng pele haholo tse bolokang nako, matla le litšenyehelo ka ho sebelisa mahlale a PCB a tikoloho ho laola karolo ea metsi mohatong o mong le o mong oa tlhahiso ea PCB.