Mekhoa ea PCB Etchback: Ho netefatsa li-PCB tsa Multilayer tsa boleng bo holimo bakeng sa Likopo tse Bohlokoa

Ho Highleap Electronic, re litsebi tsa tlhahiso ea PCB le kopano ea PCB, re fana ka litharollo tse entsoeng ka nepo bakeng sa liindasteri tse fapaneng, ho kenyeletsoa likoloi, likhokahano tsa mehala, tsa bongaka le tsa sefofane. Re sebetsa ka ho khetheha ho li-PCB tse ngata tse hlokang mekhoa e tsoetseng pele ea tlhahiso, joalo ka PCB etchback, ho ntlafatsa ts'ebetso le ts'epahalo. Mekhoa ea Etchback e bapala karolo ea bohlokoa ho ntlafatseng tsamaiso ea motlakase pakeng tsa likarolo tsa PCB, haholo-holo ha ho sebetsanoa le likoti tse nang le plated-through (PTH). Sena se tiisa ts'ebetso e phahameng ea ts'ebetso bakeng sa lits'ebetso tsa bohlokoa, moo ho nepahala le botsitso li hlokahalang.

PCB Etchback ke Eng 'me Hobaneng e le Bohlokoa?

PCB Etchback ke ts'ebetso e sebelisoang ho tlosa li-resin smears le litšila tsa dielectric tse ka sitisang litsela tsa motlakase lipakeng tsa likarolo ho PCB ea multilayer. Nakong ea ts'ebetso ea ho cheka, resin e sebelisetsoang ho tlama likarolo e ka tlotsa maboteng a tsela e chekang, e sitisang tsamaiso ea motlakase le ho senya ts'ebetso ea PCB. Etchback e hloekisa marako a ka hare a tsela, a ba lokisetsa bakeng sa ho roala koporo, e leng se tiisang hore ho na le kamano e hloekileng, e ka tšeptjoang pakeng tsa lihlopha le ho matlafatsa botšepehi ba pontšo.

Lits'ebetsong tse ts'epahalang haholo joalo ka lisebelisoa tsa bongaka, sefofane, le lisebelisoa tsa elektroniki tsa sesole, lits'ebetso tsa etchback li bohlokoa ho netefatsa hore PCB e khona ho sebetsana le maqhubu a phahameng le ho boloka phetiso ea matšoao e nepahetseng ntle le ho hloleha. Ka ho tlosa resin le maloanlahla, etchback e ntlafatsa sekhomaretsi sa plating, se etsa hore e be ts'ebetso ea bohlokoa bakeng sa ts'epo ea nako e telele.

Mefuta ea Mekhoa ea PCB Etchback

Ho na le mefuta e 'meli e meholo ea lits'ebetso tsa etchback: Negative Etchback le Positive Etchback, e 'ngoe le e' ngoe e na le melemo e itseng, lits'ebetso le maikutlo.

1. Negative Etchback

Negative Etchback ke mokhoa oa setso le o sebelisoang haholo ho etsa PCB. Ka mokhoa ona, koporo e ts'oaroa ka morao ho tloha maboteng, ha thepa ea dielectric e sala e tiile. Koporo e khutlisetsoa morao, ho netefatsa phetoho e boreleli lipakeng tsa moqomo oa koporo le PCB ka.

• Process: PCB e qoelisoa ka har'a etchant ea koporo, eo hangata e leng ferric chloride, e tlosang chelete e nyane (0.001" ho ea ho 0.0005") ea koporo ho tloha maboteng.
• le menyetla: Negative etchback ha e na litšenyehelo, e tšepahala, 'me e sebelisoa hangata bakeng sa li-PCB tse tloaelehileng moo ts'ebetso ea motlakase e sa hlokeng haholo. E loketse likopo tse ngata tse akaretsang.
• haelloang teng: Le hoja mokhoa ona o sebetsa, o ka fokotsa ts'ebetso ka ho tlosa koporo ho tloha ka tsela, e ka lebisang ho karohano ea lera kapa lipokothong tsa moea ka har'a via, tse amang botšepehi ba nako e telele ba PCB.

2. Positive Etchback

Positive Etchback ke mokhoa o tsoetseng pele oa etching moo thepa ea dielectric pakeng tsa likarolo tsa koporo e tlosoa, e lumellang koporo hore e kene ka har'a tsela.

• Process: Mokhoa ona o sebelisa etching ea plasma ho tlosa resin le lisebelisoa tsa dielectric maboteng. Plasma etching e laoloa haholoanyane, e pepesa koporo ka mahlakoreng 'ohle a tsela le ho netefatsa ho khomarela hantle.
• le menyetla: Positive etchback e molemo bakeng sa lits'ebetso tse tšepahalang haholo tse kang tsa bongaka, sefofane, le li-PCB tsa sesole. E ntlafatsa ts'ebetso ea motlakase lipakeng tsa mekhahlelo mme e theha khokahano e matla ea li-terminal tse tharo ka har'a tsela, e etsa hore e be e loketseng maemo a boima.
• haelloang teng: Ts'ebetso e theko e boima haholo 'me e ka hlahisa khatello ea maikutlo ka har'a tsela, e ka lebisang mapetsong a foil kapa khatello ea moqomo oa koporo. Ho sebetsana ka hloko hoa hlokahala ho qoba masoba a maholo, a ka senyang botšepehi ba PCB.

PCB Positive Etchback Process Overview

Ts'ebetso e ntle ea etchback ke ea bohlokoa bakeng sa li-PCB tse ngata tsa multilayer 'me e sebetsa ka ho khetheha lits'ebetsong tse ts'epahalang haholo joalo ka lipotoloho tsa bongaka, sefofane, le sesole. Ha bareki ba kopa etchback e ntle (eo hape e tsejoang e le Positive Etch Back), mokhoa ona o etselitsoe ka ho khetheha ho netefatsa hore mehele ea ka hare ea koporo e hlahella ka har'a masoba, e fana ka plating e phahameng ea koporo le conductivity ea motlakase ho pholletsa le mekhahlelo.

Mona ke kakaretso ea ts'ebetso e ntle ea etchback:

Tlhophiso ea Pele : Ts'ebetso ena e qala ka ts'ebetso e le 'ngoe ea ho cheka bakeng sa PCB, hangata e kenyelletsang masoba a entsoeng ka tšepe (PTH).

Phallo ea Ts'ebetso bakeng sa Lesoba le le Leng la ho Cheka :

Ts'ebetso ea pele → Lamination → Ho tjheka → Ho tlosa lithōle 1 → Boto ea ho Omisa 1 → Kalafo ea Plasma → Ho fata Fiberglass → Ho tlosa lithōle 2 → Ho phuthela ka koporo → Kamora ts'ebetso.

Bakeng sa ts'ebetso ea ho cheka ka makhetlo a mangata ka metalized ka masoba:

Pele ho ts'ebetso → Khalemelo → Resin Drilling → Ho qhekella 1 → Drying Board 1 → Phekolo ea Plasma → Fiberglass Etching → Ho qhekella 2 → Ho roala Koporo → Resin Plugging → cheka → Ho qhekella 3 → Drying Board 2 → Kalafo ea Plasma 1 → Setšoantšo sa Fiberglass 1 → Ho qhekella 4 → Copper Plating 1 → Kamora ts'ebetso.

Bakeng sa masoba a sa boneng le a patiloeng, ts'ebetso e fapana ho latela hore na masoba a chekoa ka mochini kapa ka laser:

Ho Cheka ka Mechine (ka ho tjheka ka mechine bakeng sa masoba a foufetseng, ≥ mekato e 3) : Boto e nyane : Ts'ebetso ya pele → Lamination → Ho Cheka → Ho Tlosa Dibotlolo 1 → Boto ya ho Omisa 1 → Kalafo ya Plasma → Ho Etching ka Fiberglass → Ho Tlosa Dibotlolo 2 → Ho Pepeta ka Koporo → Ts'ebetso ya kamora ts'ebetso.

Boto e ka Sehloohong : E ​​tšoana le e ka holimo, empa e na le mehato e eketsehileng ea ho tlatsa resin haeba ho hlokahala.

Ho Cheka ka Laser : Bakeng sa masoba a foufetseng a tjhekilweng ka laser (ho kenyeletsoa le mohato o le mong kapa e 'meli), ho sekama ha etchback ha ho hlokahale.

Ho Highleap Electronic, ts'ebetso e ntle ea ho phunya le ho phunya e bohlokoa bakeng sa ho netefatsa ho tsamaisa le ho tšepahala ho li-PCB tse nang le mekhahlelo e mengata . Ha PCB e na le lesoba le le leng la ho phunya leo e leng tsela e entsoeng ka tšepe, phallo ea ts'ebetso e qala ka lamination, e lateloe ke ho phunya le kalafo ea plasma ho tlosa masala afe kapa afe a sa batleheng. Mehato e latelang e kenyelletsa ho phunya fiberglass ho lokisa masoba a entsoeng ka tšepe le ho phunya koporo ho netefatsa ho tsamaisa hantle. Ts'ebetso ena e tiisa ts'ebetso ea boleng bo holimo bakeng sa li-PCB tse tloaelehileng tse nang le li-vias tse entsoeng ka tšepe.

Bakeng sa li-PCB tse hlokang mesebetsi e mengata ea ho cheka, e kang e amanang le ho cheka resin e lateloang ke ho cheka masoba a se nang resin, ho hlokahala mehato e eketsehileng. Ka mor'a ho cheka resin ea pele, ho kenngoa ha resin ho etsoa ho tlatsa likoti. Kamora moo, boto e ea kalafo ea plasma, fiberglass etching, le copper plating ka mor'a sethala se seng le se seng sa ho cheka ho netefatsa hore masoba ohle a phuntsoeng a hloekisitsoe hantle 'me a loketse ho raloa. Mokhoa ona o etsa bonnete ba hore vias multiple metalized ba tšoaroa ka tsela e tšoanang phahameng, ho boloka botšepehi le conductivity tsa PCB.

Tabeng ea masoba a foufetseng kapa a patiloeng, haholo-holo a chekiloeng ka mochine a phunyeletsang likarolo tse fetang tse tharo, ts'ebetso ea etchback e hloka phekolo ea plasma le fiberglass etching pele ho sethaleng sa koporo. Bakeng sa likoti tse entsoeng ka laser, leha ho le joalo, ts'ebetso ea etchback ha e hlokahale. Sena se lumella liphetho tse nepahetseng, tsa boleng bo holimo ntle le lits'ebetso tse eketsehileng, ho netefatsa hore li-PCB tse rarahaneng tse nang le litlhophiso tse rarahaneng tsa ho cheka li lokiselitsoe ts'ebetso e nepahetseng ea motlakase.

Ha projeke e fetoha ho tloha lipatlisisong ho ea ho RFQ, hlahloba tlhahlobo ea PCB le taolo ea boleng le litlhoko tsa teko ea PCB e le hore litlhoko tsa thepa, ts'ebetso le tlhahlobo li lule li tsamaellana.

Lintlha tsa ERP le Ts'ebetso ea PCB Etchback (Positive Etchback)

Ts'ebetsong e ntle ea etchback, ho ela hloko lisebelisoa ka bobeli le mehato ea ts'ebetso ho bohlokoa bakeng sa ho fihlela boleng bo holimo le ts'ebetso ea PCB ea hau. Ts'ebeliso ea lisebelisoa tse khethehileng tsa etchback ke ea bohlokoa ho boloka sephetho se nepahetseng sa etching le plating, ho netefatsa hore PCB ea hau e lokiselitsoe lits'ebetso tse latelang. Ho etsa bonnete ba hore ho lokisoa hantle pele ho mekhahlelo ea etchback, ke habohlokoa ho omisa mapolanka ka 150 ° C bakeng sa lihora tse 0.5.

Deburring ke mohato o mong oa bohlokoa ka ho tshebetso PCB etchback hore etsa bonnete ba vias ba boreleli le lokolohile ho metshetshe bohale, e leng ka kena-kenana le dithulaganyo hamorao. Ts'ebetso ea deburring e etsoa ka mekhahlelo e mengata:

• Mehato ea pele le ea boraro e kenyelletsa ho qhekella khafetsa ho tlosa likarolo tse bohale.
• Mokhahlelo oa bobeli le oa bone o sebelisa borashe bo koetsoeng bo lateloang ke lipallo tse peli ho boreleli mathōko. Sena se tiisa hore ha ho na mapheo a hlabang a tla thibela lits'ebetso tse latelang tse kang kalafo ea plasma le fiberglass etching, tseo ka bobeli li leng bohlokoa ho fihlela plating ea boleng bo holimo.

Kalafo ea plasma e tlosa mesaletsa efe kapa efe ho tsoa ka masoba, e netefatsa hore ho khomarela hantle ha koporo ea koporo. Ntle le moo, etching ea fiberglass e etsoa ho felisa lisebelisoa tsa dielectric tse ka sitisang ho penta hantle. Mohato ona ke oa bohlokoa ka ho khetheha bakeng sa lits'ebetso tse ts'epahalang haholo, moo li-vias tse hloekileng le ho roala ka koporo ho hlokahalang ho fihlela ts'ebetso e nepahetseng le ho tšoarella ha nako e telele ea PCB.

Ho ntlafatsa PCB Etchback bakeng sa Likopo tsa Ts'ebetso e Phahameng

Ts'ebetso e ntle ea ho khutlisetsa morao e bohlokoa haholo tlhahisong ea PCB kaha e tiisa hore li-PCB tse nang le mekhahlelo e mengata li boloka phallo e phahameng ea motlakase le ts'epo ea nako e telele. Ka ho tlosa koporo e feteletseng ka hloko le ho tlosa resin le thepa ea dielectric ho tsoa li-via, Highleap Electronic e netefatsa hore PCB e 'ngoe le e 'ngoe e fihlela litekanyetso tse tiileng tsa boleng. Sena se bohlokoa haholo lits'ebetsong tse sebetsang hantle moo botšepehi ba lets'oao bo leng bohlokoa haholo.

Ts'ebetso ea rona e tsoetseng pele ea PCB etchback, ebang ke masoba a foufetseng, li-vias tse patiloeng, kapa masoba a phuntsoeng ka laser, ho ntlafatsa botšepehi ba pontšo le ho tšoarella ho finyella litlhoko tse nepahetseng tsa moralo oa hau. Ka ho latela litataiso tse thata tsa tlhahiso le theknoloji e tsoetseng pele, re netefatsa li-PCB tsa boleng bo holimo, tse tšepahalang bakeng sa liindasteri tse fapaneng, ho tloha ho tsa likoloi ho isa sebakeng sa sefofane le lits'ebetso tsa bongaka.

Hore na morero oa hau o kenyelletsa meralo e bonolo ea lera le le leng kapa meaho e rarahaneng ea mekhahlelo e mengata, Highleap Electronic e ikemiselitse ho fana ka li-PCB tse emelang nako e telele, ho netefatsa ts'ebetso e ikhethang le ts'epahalo lits'ebetsong tse fapaneng. Re tšepe ho fana ka li-PCB tse entsoeng ka nepo tse fihlelang litlhoko tsa hau tse batloang haholo.

Mekhoa ea Etchback: Micro-Etch vs. Plasma Etch

Ho na le mekhoa e 'meli ea mantlha e sebelisoang ho etsa etchback: Micro-Etch le Plasma Etch. Mekhoa ena ka bobeli e etselitsoe ho tlosa resin le litšila maboteng, empa e 'ngoe le e' ngoe e na le melemo e ikhethang ho latela ts'ebeliso.

1. Micro-Etch (Negative Etchback)

Micro-etch e sebelisa etchant ea koporo ea alkaline ho tlosa resin le ho tlotsa mabota. PCB e ka qoelisoa ka hare kapa e fafatsoa ka etchant ho fihlela ho tlosoa ha koporo ka nepo, ho hloekisa mabota.

Melemo : Micro-etch e sebetsa hantle bakeng sa negative etchback mme hangata e sebediswa ho di-PCB tse tloaelehileng moo taolo e nepahetseng hodima tshebetso ya ho etching e seng bohlokwa hakaalo. Ke tharollo e theko e tlase bakeng sa ditshebediso tse ngata tse akaretsang.

2. Plasma Etch (Positive Etchback)

Plasma etching ke mokhoa o tsoetseng pele haholo moo likhase tsa plasma li sebelisoang ho tlosa lisebelisoa tsa dielectric le resin leboteng. Mokhoa ona o fana ka ho nepahala ho betere mme o netefatsa etching e laoloang haholoanyane.

Melemo : Plasma etch e lumella taolo e nepahetseng hodima tshebetso ya etchback, e fanang ka ho nepahala le bokgoni bo hodimo bakeng sa etchback e ntle. E sebediswa hangata ho di-PCB tse tshepahalang haholo, moo tshebetso ya letshwao le ho kgomarela ha plating e leng bohlokwa.

Ho Khetha Mokhoa o nepahetseng oa PCB Etchback bakeng sa Moralo oa Hau

Ho Highleap Electronic, re utloisisa hore projeke e 'ngoe le e 'ngoe ea PCB e tla le litlhoko tsa eona tse ikhethang. Ho khetha mokhoa o nepahetseng ka ho fetisisa oa PCB etchback ho bohlokoa ho netefatsa ts'ebetso e lakatsehang ea motlakase le ho ts'epahala ha boto ea hau ea potoloho. Ho itšetlehile ka ho rarahana ha moralo oa hau le litlhoko tsa eona tse khethehileng tsa ts'ebetso, re u tataisa ho khetha pakeng tsa mekhoa e metle ea li-etchback kapa tse mpe tsa etchback. Hore na o hloka etchback e ntle bakeng sa lits'ebetso tse ts'epahalang haholo kapa etchback e fosahetseng bakeng sa meralo e theko e tlase, re ikemiselitse ho u thusa ho fihlela liphetho tse ntle ka ho fetesisa mabapi le ponts'o ea matšoao le ho khomarela plating.

Bakeng sa lits'ebetso tsa bohlokoa, tse ts'epahalang haholo joalo ka li-circuits tsa bongaka kapa tsa sefofane, PCB etchback e ntle hangata ke khetho e ratoang. E fana ka botšepehi bo phahameng ba pontšo le ho ntlafatsa botšepehi ba plating, e leng ntho ea bohlokoa bakeng sa lits'ebetso moo ts'ebetso e lokelang ho ba e sa tsitsang. Ts'ebetso ena e ntlafatsa ts'ebetso ea motlakase mme e netefatsa hore PCB e khona ho mamella maemo a thata bophelong bohle ba eona ba ts'ebetso.

Ka lehlakoreng le leng, bakeng sa li-PCB tse tloaelehileng, moo ho boloka litšenyehelo e le taba ea bohlokoa, PCB etchback e mpe e fana ka tharollo e tšepahalang le e sebetsang hantle. Le hoja e se mabifi joaloka etchback e ntle, ts'ebetso ena e tiisa ho tlosoa ho lekaneng ha resin le lisebelisoa tsa dielectric ho tloha ka vias, ho fana ka tekanyo ea ts'ebetso le ho khoneha bakeng sa meralo e sa hlokeng ho nepahala ho phahameng ha etchback e ntle. Ho Highleap Electronic, re etsa bonnete ba hore ts'ebetso ea PCB ea hau ea etchback e etselitsoe ho fihlela litlhoko tse ikhethileng tsa kopo ea hau, ho fihlela ts'ebetso e nepahetseng ha u ntse u nahana ka ho boloka litšenyehelo.

fihlela qeto e

Tlhahisong ea PCB, lits'ebetso tsa etchback joalo ka li-etchback tse mpe le tse ntle li bohlokoa bakeng sa ho netefatsa ts'ebetso ea boleng bo holimo ho li-PCB tse ngata. Ho Highleap Electronic, re sebelisa mekhoa e tsoetseng pele ea etchback ho tlosa resin smears le litšila tsa dielectric, tse ntlafatsang phetiso ea mats'oao, ho khomarela lipolanete, le ts'epo ka kakaretso ea PCB. Hore na o hlahisa li-PCB tse tšepahalang haholo bakeng sa liindasteri tse kang sefofane, sesole, kapa tsa bongaka, kapa li-PCB tse tloaelehileng bakeng sa lisebelisoa tsa elektroniki tsa bareki, ho nepahala ha rona le boitseanape ba rona li tiisa tšebetso e holimo ea motlakase le ho ts'epahala. Khetha Highleap Electronic bakeng sa litlhoko tsa hau tsa tlhahiso ea PCB le kopano, 'me u rue molemo ho tsoa ho litharollo tsa rona tse tsoetseng pele tse ntlafatsang meralo ea hau bakeng sa ts'ebeliso efe kapa efe.