Letamo la Mask la Solder ke eng

Selelekela

Ha u rala le ho etsa liboto tsa potoloho tse hatisitsoeng (PCBs), ho boloka taolo e nepahetseng ea solder ho bohlokoa ho netefatsa hore sehlahisoa sea tšepahala. Ntho e 'ngoe e atisang ho hlokomolohuoa e phethang karolo ea bohlokoa ho thibela ho senyeha ha solder ke letamo la mask a solder. Bakeng sa baqapi ba PCB le litsebi tsa ho reka thepa, ho utloisisa ts'ebetso le menahano ea moralo oa matamo a mask a solder ho ka thusa ho ntlafatsa boleng ba tlhahiso le ho fokotsa ts'ebetso e theko e boima.

Sengoliloeng sena se hlahloba bohlokoa ba matamo a mask a solder, litataiso tsa meralo ea bona, ts'ebetsong, le phello ea bona katlehong ea tlhahiso ea PCB.

Letamo la Solder Mask ke eng?

Letamo la mask a solder ke moqomo o moqotetsane oa thepa ea maske ea solder e behiloeng lipakeng tsa li-pads tse haufi ho PCB. Mosebetsi oa eona o ka sehloohong ke ho thibela borokho ba solder-e leng bothata bo tloaelehileng bo hlahang ha solder e feteletseng e etsa hore ho be le likamano tse sa lebelloang pakeng tsa libaka tsa conductive.

Ka ho sebetsa joalo ka tšitiso, matamo a mask a solder a thusa ho netefatsa:

• Ntlafatso ea Soldering Precision - Solder e lula e koaletsoe lipacheng tse khethiloeng.
• Likgutshwane tsa Motlakase tse Fokotsoeng - E thibela likhokahano tse sa lebelloang tse ka bakang liphoso.
• Ho tšepahala ho ntlafalitsoeng - E netefatsa likhokahano tse tsitsitseng, e fokotsa kotsi ea ho hloleha ha masimo.
• Ho lumellana le Likarolo tsa Fine-Pitch - E bohlokoa bakeng sa likarolo tse nang le sebaka se senyenyane sa li-pad, joalo ka BGAs (Ball Grid Arrays) le QFPs (Quad Flat Packages).

Hobaneng ha Solder Mask Dams a bohlokoa ho PCB Manufacturing

Matamo a maske a solder a fana ka melemo e 'maloa e amang ka kotloloho tlhahiso ea PCB le katleho ea kopano:

Thibelo ea Solder Bridging

Ho koala borokho ke taba e tšoenyang haholo, haholo bakeng sa li-PCB tse hlakileng moo sebaka sa marang-rang se fokolang haholo. Letamo la mask la solder le thusa ho felisa taba ena ka ho arola libaka tse solderable.

Phokotso ea Litšenyehelo Kopanong

Litšitiso tse kang marokho a solder li hloka ho tsosolosoa, ho eketsa litšenyehelo tsa basebetsi le ho fokotsa tlhahiso. Ho kenya ts'ebetsong matamo a entsoeng hantle a solder mask ho fokotsa litekanyetso tsa sekoli, e leng se lebisang ho bolokeng litšenyehelo ho bobeli ba tlhahiso le taolo ea boleng.

Ho nolofaletsa Meetso ea PCB e phahameng-holo

Ka tlhokahalo ea miniaturization ho lisebelisoa tsa elektroniki tsa sejoale-joale, meralo ea PCB e se e na le sebaka se thata sa marang-rang le likhokahano tse phahameng haholo (HDI). Matamo a mask a solder a bapala karolo ea bohlokoa ho etseng hore meralo e joalo e khonehe ka ho fana ka mokelikeli o hlokahalang lipakeng tsa lipampiri tse haufi-ufi.

Litlhahiso tsa moralo bakeng sa Matamo a Mask a Solder

E le hore a atlehe, matamo a mask a solder a tlameha ho etsoa ka tataiso e tobileng kelellong. Ka bobeli baqapi ba PCB le litsebi tsa ho reka thepa ba lokela ho hlokomela bokhoni ba moetsi le lithibelo tsa moralo.

Bophara bo Nyenyane le Tlhokomelo

• Standard solder mask letamo bophara: Ka tloaelo ≥ 4 mils (0.1 mm), empa sena se fapana le moetsi oa PCB.
• Ho hlaka pakeng tsa letamo le moeli oa letamo: Ho netefatsa sebaka se nepahetseng ho bohlokoa ho thibela ho se lumellane ha mask a solder ho amang solderability.

Khetho ea Mask ea Solder

• Khahlanong le ho futhumatsa: Mask ea solder e tlameha ho mamella mocheso oa reflow soldering.
• Matla a ho khomarela: Ho se mamelle hantle ho ka lebisa ho delamination, ho fokotsa katleho ea letamo.
• Khanyetso ea Lik'hemik'hale: E hlokahala bakeng sa ts'ireletso khahlanong le tlhahiso e thata le maemo a tikoloho.

Litšitiso tsa Tlhahiso

Baetsi ba PCB ba ka ba le mefokolo mabapi le hore na matamo a masesaane a solder a ka ba joang pele liphoso tsa tlhahiso li etsahala. Ka hona, ho sebetsa 'moho le barekisi ho ntlafatsa moralo o ipapisitseng le bokhoni ba ho qapa ho bohlokoa.

Ho kenya ts'ebetsong matamo a Solder Mask ho Moralo oa PCB

Ho hlalosa Letamo ho PCB Design Software

Qalong ea ts'ebetso ea moralo, baqapi ba PCB ba tlameha ho kenyelletsa matamo a maske a solder ho thibela ho hokela ha solder le ho netefatsa phallo e nepahetseng ea solder. Sena se kenyelletsa ho sebelisa lifaele tsa Gerber kapa ODB++ ho hlalosa ka nepo masoba a lera la maske ea solder. Baqapi ba lokela ho beha bophara ba letamo ho latela litataiso tsa moetsi—hangata hoo e ka bang 4 mils (0.1 mm)—ha ba ntse ba kenyelletsa sebaka se lekaneng ho tloha mathōkong a pad ho lumella ho kolobisoa hantle ha solder. Ho feta moo, ho bohlokoa ho ikarabella bakeng sa katoloso efe kapa efe e hlokahalang ea maske ea solder ho lefella mamello ea tlhahiso. Ho tsamaisa Tlhahlobo e felletseng ea Molao oa Moralo (DRC) ka har'a software ea hau ea moralo oa PCB (joalo ka Altium, KiCad, kapa Eagle) ho ka thusa ho khetholla le ho rarolla mathata a ka bang teng a amanang le litekanyo le sebaka sa letamo pele tlhahiso e qala.

Ho sebelisa mask a solder

Hang ha moralo o phethetsoe, mohato o latelang ke ho sebelisa mask a solder, a bohlokoa bakeng sa ho sireletsa PCB le ho netefatsa manonyeletso a matla. Baetsi ka tloaelo ba sebelisa mekhoa e joalo ka ho hatisa skrineng, ho roala ka sefahla, kapa ho roala likharetene ho beha maske a mokelikeli a ka nkuoang foto kapa a ommeng holim'a boto. Pele o sebelisoa, sebaka sa PCB se tlameha ho hloekisoa ka hloko ho tlosa litšila, ho netefatsa hore mask a khomarela hantle substrate. Kamora ho sebelisoa, mask a solder o kena tšebetsong ea ho folisa - e ka ba kalafo ea UV bakeng sa limaske tse ka nkuoang lifoto kapa pheko ea mocheso bakeng sa mefuta e meng - ho thatafatsa thepa ka botlalo. Ts'ebetso ena ea ho folisa e bohlokoa kaha e tiisa hore mask a solder a lula a tsitsitse nakong e latelang ea mocheso o phahameng oa mocheso o phahameng, ka hona ho boloka botšepehi ba matamo a mask a solder.

Tlhahlobo ea Boleng le Bopaki

Taolo ea boleng ke karolo ea bohlokoa ea ho kenya ts'ebetsong matamo a mask a solder. Lits'ebetso tsa Automated Optical Inspection (AOI) hangata li sebelisoa ho skena boto bakeng sa mefokolo e kang ho koahela maske ka botlalo, ho se tsamaisane hantle, kapa boholo ba matamo a sa lekaneng a ka lebisang ho borokho ba solder. Bakeng sa lits'ebetso tseo ho ts'epahalang ho leng bohlokoa haholo - joalo ka sepakapakeng, likoloing, kapa lisebelisoa tsa bongaka - tlhahlobo e eketsehileng ea matsoho e khothaletsoa ho netefatsa hore likarolo tsa letamo la solder li fihlella litekanyetso tse thata tsa boleng. Liteko tsa motlakase, joalo ka liteko tsa probe e fofang, le tsona li ka sebelisoa ho netefatsa hore mask a solder ha a sekisetse tšebetso ea motlakase ea PCB. Ho theha loop e matla ea maikutlo le moetsi ho thusa ho ntlafatseng moralo le ts'ebetso, ho netefatsa ntlafatso e tsoelang pele ea boleng ba tlhahiso.

Ho sebelisana le PCB Fabricators

Tšebelisano e haufi-ufi le moetsi oa hau oa PCB e bohlokoa ho netefatsa hore matamo a entsoeng ka solder mask a tsamaisana le mokhoa oa ho etsa. Ho buisana ka boholo bo fokolang ba likarolo, ho mamellana ha tumellano, le ho ngola ka nepo esale pele ho ka thusa ho loants'a moralo ho ea ka bokhoni bo ikhethileng ba mohala oa tlhahiso. Puisano ea kamehla le ho hlahloba maikutlo a moetsi ho lumella baqapi ho fetola litekanyetso-joaloka bophara ba letamo, ho hloekisoa le ho atolosoa ha mask a solder-ka tsela eo ho fokotsa kotsi ea bokooa le ho netefatsa ts'ebetso ea tlhahiso e phahameng ea lihlahisoa.

Ka ho kopanya matamo a mask a solder qalong ea mokha oa moralo, ho sebelisa boitokiso bo hlokolosi ba bokaholimo le mekhoa e nepahetseng ea ts'ebeliso ea mask, le ho kenya ts'ebetsong liprothokholo tsa tlhahlobo ea boleng, baqapi ba PCB ba ka ntlafatsa haholo ts'epahalo ea sehlahisoa. Mokhoa ona o akaretsang ha o thibele feela ho koala borokho ba solder le lifupi tsa motlakase empa hape o fokotsa litšenyehelo tse theko e boima hape le tieho ea tlhahiso. Bakeng sa baqapi ba PCB le litsebi tsa ho reka ka mokhoa o ts'oanang, ho latela mekhoa ena e metle ho fella ka liboto tsa boleng bo holimo, lihlahisoa tse ntlafalitsoeng tsa tlhahiso, 'me qetellong mokhoa oa tlhahiso o sebetsang hantle le o tšepahalang.

Mathata le Litharollo ho Ts'ebetsong ea Letamo la Solder Mask

Mathata a ka Sehloohong le Litharollo tse Sebetsang

Matamo a mask a solder a bohlokoa moralong oa PCB, haholo bakeng sa lits'ebetso tse matla haholo le tse hlakileng, ho thibela borokho ba solder. Matrix a latelang a totobatsa liphephetso tse atileng le litharollo tsa ho li rarolla, ho netefatsa ts'epo e ntlafalitsoeng le ts'ebetso ea tlhahiso:

1. Bophara bo sa Lekaneng ba Letamo la Mask la Solder: Phephetso ena e eketsa haholo kotsi ea borokho ba solder, haholo meralong e rarahaneng. Ho fokotsa sena, ho sebelisoa algorithm ea dynamic linewidth compensation, ka tsela e iketsang ho lokisa katoloso ea ho bula ho ipapisitsoe le botenya ba koporo. Netefatso e etsoa ho sebelisoa laser profilometer ea 3D, e fanang ka litekanyo tse nepahetseng ka ho nepahala ha ± 2μm.
2. Mathata a ho se tsamaisane hantle: Ho se tsamaisane hantle, haholo-holo ka menoana ea khauta, ho ka lebisa ho hloleheng ha ho kopana. Sena se rarolloa ka ho sebelisa Laser Direct Imaging (LDI) e kopantsoeng le tsamaiso ea matšeliso ea pono ea CCD ho lokisa katoloso ea substrate le shrinkage. Ho nyatsuoa hoa bonoa 'me ho lekanyetsoa Tlhahlobo ea X-ray.
3. Ho hloka botsitso ha Thermal: Ka mor'a reflow soldering, ho se tsitse ha mocheso ho ka baka ho theoha ha 40% ts'ebetsong ea insulation. Tharollo e kenyelletsa ho sebelisa li-inks tse phahameng tsa Tg solder mask, tse ntlafalitsoeng ka li-filler tsa nano-silica, ho ntlafatsa botsitso ba mocheso. Sena se netefatsoa ho sebelisoa Thermomechanical Analysis (TMA), ho netefatsa hore thepa e mamella maemo a mocheso o phahameng.
4. Phapang ea Ts'ebetso: Phapang lipakeng tsa lihlopha tsa tlhahiso, haholo bophahamong ba letamo, e ka feta 15%. Ho sebetsana le sena, ho kenngoa ts'ebetsong tsamaiso ea "viscosity" ea "viscosity" e koetsoeng, e fetolang viscosity ka matla ho boloka botsitso. Mokhoa ona o netefatsoa ho sebelisoa Statistical Process Control (SPC) bakeng sa tlhahlobo e tebileng ea bokhoni.

Mekhoa e Tsoetseng Pele ea Taolo le Theknoloji

Ho kenyelletsa mahlale a tsoetseng pele le lits'ebetso ke senotlolo sa ho ntlafatsa ts'epo le ts'ebetso ea PCB, haholo bakeng sa lits'ebetso tse sebetsang hantle haholo:

1. Theknoloji ea Matšeliso ea Tekanyo e Matla: Skena esale pele karoloana bakeng sa deformation (ho sebelisa mokhoa oa ho metha lintlha tse hlano) 'me u thehe limmapa tsa matšeliso a khopameng ka ± 5μm ka nepo. Ts'ebetso ena e ntlafatsa ho nepahala ha tumellano ho ± 15μm, e emelang ntlafatso ea 60% ha e bapisoa le mekhoa ea setso.
2. Lisebelisoa tsa Mask tse Matlafalitsoeng ka Nano: Ka ho kenyelletsa likaroloana tsa 30% nano Al₂O₃ (50nm ka boholo), lisebelisoa tsena li fokotsa haholo ho atolosoa ha mocheso (CTE ea 45ppm / ° C) le ho fana ka tahlehelo e tlaase ea dielectric (Df <0.02 ho 10GHz). Mehaho ena e etsa hore e be e loketseng bakeng sa lits'ebetso tsa maqhubu a phahameng joalo ka li-antenna tsa 5G millimeter-wave le li-module tsa radar tsa likoloi.
3. Intelligent Process Monitoring System: Sistimi ena e sebelisa meter ea viscosity ea inthaneteng, li-sensor tsa mocheso le khatello, le mojule oa ho fetola maemo. Setupo sena se tiisa taolo e nepahetseng holim'a lebelo la khatiso (50-150mm / s) le ho folisa ho feto-fetoha ha mocheso (± 2 ° C), ho fella ka ho tsitsisa ha tlhahiso e phahameng le ho fokotseha ha ts'ebetso e fapaneng.

Tlhahlobo ea ho hloleha le Ntlafatso ea Botšepehi ba Lipontšo

Meralo ea PCB e tlameha ho fihlela maemo a ts'epahalo a thata, haholo lits'ebetsong tse ts'epahalang haholo joalo ka litsamaiso tsa likoloi kapa tsa puisano. Mohlala, li-coefficients tse sa lumellaneng tsa katoloso ea mocheso (CTE) lipakeng tsa substrate le solder mask li ka lebisa ho delamination tlas'a baesekele ea mocheso. Ho rarolla sena, tšebeliso ea lisebelisoa tsa CTE gradient, tse kang likarolo tsa phetoho tse nang le CTE ea 35ppm / ° C, ke tsa bohlokoa. Ntle le moo, ho ntlafatsa lekhalo la pheko le ho kenyelletsa li-agent tsa coupling tsa silane ho ntlafatsa ho khomarela le ho thibela ho hloleha.

Bakeng sa botšepehi ba pontšo, haholo-holo lits'ebetsong tse phahameng-frequency, tumello e nepahetseng ea mask ea solder (≥3W ho tloha melaleng ea matšoao), taolo ea botenya (± 5μm), le botsitso ba kamehla ba dielectric (Dk = 3.2± 0.05) ke tsa bohlokoa. Liteko li bonts'a hore matamo a ntlafetseng a solder a fokotsa tahlehelo ea ho kenya ka 0.13dB, a ntlafatsa tahlehelo ea ho khutla ka 5.2dB, 'me a fokotsa jitter ea karolo ka 0.8ps ho 10GHz, ho netefatsa phetisetso le ts'ebetso e ntle. Litharollo tsena li ntlafatsa ts'epahalo e akaretsang ea tlhahiso ea PCB, ho fokotsa ts'ebetso le ho ntlafatsa boleng ba sehlahisoa.

fihlela qeto e

Bakeng sa baqapi ba PCB le litsebi tsa theko, matamo a maske a solder ke tšobotsi ea bohlokoa e amang boleng ba tlhahiso ka kotloloho, litšenyehelo le ts'epo. Ho utloisisa mokhoa oa ho li rala le ho li kenya tšebetsong ka nepo ho thibela ho hokahanya ha solder, ho fokotsa ho sebetsa bocha, le ho nolofalletsa kopano ea PCB e nang le bongata bo phahameng.

Ha theknoloji e ntse e hatela pele, kopanyo ea thepa e betere, tlhahiso e nepahetseng, le ntlafatso ea meralo e tsamaisoang ke AI e tla ntlafatsa le ho feta ts'ebetso ea matamo a mask a solder. Ka ho lula ka pele ho mekhoa ena, bahlahisi ba ka netefatsa li-PCB tsa boleng bo holimo tse fihlelang litlhoko tsa lisebelisoa tsa elektroniki tsa sejoale-joale.