Moqapi oa Stack-up oa MCPCB | Litlhophiso tsa Bohlokoa le Lintlha tsa Boenjiniere

Selelekela

Ho bokellana ha MCPCB ho emela qeto ea bohlokoa ea boenjiniere lits'ebetsong tsa taolo ea mocheso, e khethollang katleho ea ho qhala ha mocheso le ts'ebetso ea motlakase. Ha matla a motlakase litsamaisong tsa elektroniki a ntse a eketseha, sebopeho sa lera la PCB ea mantlha ea tšepe se susumetsa ka kotloloho hore na mocheso o fetisetsoa joang ho tloha likarolong ho ea libakeng tse potolohileng.

Ho utloisisa litlhophiso tse fapaneng tsa li-stack-up tsa MCPCB ho thusa baenjiniere ho leka-lekanya litlhoko tsa mocheso, ho itšehla thajana, le mathata a ho etsa thepa. Tlhahlobo ena ea tekheniki e hlahloba meralo e fapaneng ea meralo ea MCPCB, ho tloha ho meralo e le 'ngoe ho isa ho meralo e rarahaneng ea meaho e mengata, e fanang ka leseli la boenjiniere bakeng sa khetho e nepahetseng ea ho bokella le ho kenya ts'ebetsong.

Pokello ea MCPCB ke Eng?

Ho hlalosa Mehaho ea Stack-up

MCPCB stack-up e bolela tlhophiso ea tatellano ea likarolo tsa thepa tse etsang boto ea potoloho e hatisitsoeng ea tšepe, e hlalosang litsela tsa mocheso le motlakase ka sebopeho. Sebopeho sena sa layered hangata se kenyelletsa:

• Lera la Koporo ea Foil - E theha lera la potoloho le tsamaisang matšoao a motlakase le ho aba mocheso ka thoko.
• Lera la Dielectric - E fana ka insulation ea motlakase ha e ntse e thusa ho fetisetsa mocheso o otlolohileng hantle.
• Metal Base Substrate - E sebetsa e le mochini o tsamaisang mocheso le mokokotlo oa mochini, oo hangata o entsoeng ka aluminium, koporo kapa alloy ea tšepe.

Mehaho ea li-stack-up e etsa qeto ea tsela ea ho hanyetsa mocheso ho tloha likarolong tse hlahisang mocheso ka litsela tsa koporo, ho pholletsa le sebopeho sa dielectric, ho kena mokokotlong oa tšepe, 'me qetellong ho ea sebakeng sa mocheso kapa tikoloho e potolohileng.

Likaroloana tsa Lintho Tsa Sehlooho

Karolo e 'ngoe le e' ngoe ho MCPCB e fana ka thepa e ikhethang ea motlakase, mocheso le mochini:

• Lera la Koporo ea Foil
  • Botenya bo tloaelehileng: 0.5-10 oz
  • Mosebetsi: E fana ka matšoao a motlakase le ho qhala mocheso holim'a metsi
• Lera la Dielectric
  • Botenya bo tloaelehileng: 50-200 µm
  • Thermal conductivity: 1–10 W/m·K
  • Mosebetsi: E fana ka ho itšehla thajana ha motlakase ha u ntse u boloka matla a ho fetisa mocheso
• Metal Base Substrate
  • Botenya bo tloaelehileng: 0.5-3.2 mm
  • Lisebelisoa tse tloaelehileng: Aluminium, Copper, Iron alloy
  • Mosebetsi: E sebetsa e le sesebelisoa sa mantlha sa mocheso le ts'ehetso ea sebopeho, se susumetsang ts'ebetso ea mocheso le ho tiea ha mochini.

Mokhahlelo o le mong oa MCPCB

Tlhophiso ea Motheo le Litšobotsi

Mohaho o le mong oa MCPCB o na le lesela le le leng la koporo le kopantsoeng le karoloana ea tšepe ka dielectric tse tsamaisang mocheso.

• Tsela e khuts'oane ea mocheso - Phallo e tobileng ea mocheso ho tloha likarolong ho ea motheong oa tšepe e fokotsa mocheso oa matekoane.
• Tlhahiso e bonolo - Ha ho na vias kapa multilayer lamination, ho netefatsa ho tšepahala ho phahameng le boleng bo tsitsitseng.
• Tshebetso e sebetsang hantle - Meralo e ntlafalitsoeng e ka fihlella ho hanyetsa mocheso ka tlase ho 0.5 ° C / W.
• Dielectric sensitivity - Botenya ba Layer bo ama ka kotloloho ho hanyetsa mocheso le matla a ho senya.

Sebopeho sena se hlophisitsoeng se etsa hore li-MCPCB tsa lera le le leng e be tharollo e theko e boima le e matla bakeng sa lits'ebetso tse phahameng tsa taolo ea mocheso.

Meralo ea Meralo le Lisebelisoa

• Dielectric thermal conductivity - Ka tloaelo 2–5 W/m·K bakeng sa lisebelisoa tsa LED.
• Botenya ba koporo - E khethiloe ho latela litlhoko tsa hajoale.
• Qetellong - E netefatsa hore solderability le ts'epahalo e ntseng e eketseha ea karolo.
• Botenya ba dielectric - Ho leka-lekana pakeng tsa ho fetisetsa mocheso le ho itšehla thajana ka motlakase; maemo a tloaelehileng a 75–100 µm.

Tlhophiso ena e loketse lits'ebetso tsa mabone a LED, li-converter tsa matla, le li-drive tsa makoloi moo likarolo li kenngoeng ka lehlakoreng le le leng mme ho bohlokoa haholo ho senya mocheso.

Melato e 'meli ea MCPCB Stack-up

Sebopeho le Tsamaiso ea Mocheso

MCPCB e nang le mekhahlelo e 'meli e kenyelletsa likarolo tse peli tsa koporo tse arohaneng ka thepa ea dielectric, e nang le lisebelisoa tsa mocheso tse fanang ka litsela tsa ho tsamaisa mocheso pakeng tsa lihlopha le ho karolo ea motheo ea tšepe.

• Mehaho e 'meli ea koporo - E nolofalletsa karolo e ntseng e eketseha ka mahlakoreng ka bobeli ha u ntse u boloka ho kopana ha mocheso ho setsi sa tšepe.
• Thermal ka marang-rang - Mekhahlelo ea bophara ba limilimithara tse 0.3–0.5 ka bophara ba 1.0–1.5 mm e theha likanale tse otlolohileng tsa ho fetisa mocheso tse fetang lisebelisoa tsa dielectric tse hanyetsanang haholo.
• Ho feto-fetoha ha maemo ho ntlafalitsoeng - E ts'ehetsa litlhophiso tse rarahaneng tsa potoloho ha li bapisoa le litlhophiso tsa lera le le leng.
• Ho hanyetsa mocheso o itekanetseng - E phahame hanyane ho feta MCPCB ea lera le le leng ka lebaka la likarolo tse ling tsa dielectric.

Pokello ena e fana ka teka-tekano e sebetsang lipakeng tsa ho rarahana ha potoloho le ts'ebetso ea taolo ea mocheso bakeng sa lits'ebetso tse hlokang ho kopanngoa ha likarolo tse peli.

Likhoebo tsa Boenjiniere

• Taolo ea ho atolosa mocheso - Ho atolosoa ho fapaneng pakeng tsa likarolo tsa koporo ho hloka kabo e leka-lekaneng ea koporo ho fokotsa ntoa nakong ea libaesekele tse futhumetseng.
• Ka lisebelisoa tsa ho tlatsa - Ho sebelisa li-fillers tsa thermally conductive (20–50 W/m·K) ho matlafatsa phetisetso ea mocheso le ho thibela li-solder wicking nakong ea kopano.
• Ho rarahana ha tlhahiso - Mehato e meng ea lamination le ho cheka e eketsa litlhoko tsa ho nepahala ha masela.
• Ho tšoaneleha ha kopo - E nepahetse bakeng sa lisebelisoa tsa motlakase tse nang le taolo ea li-circuitry ka thoko, li-module tsa likoloi tsa LED tse nang le bakhanni ba kopaneng, le liboto tsa puisano tsa RF tse hlokang tšireletso ea interlayer.

Li-stack-up tsa MCPCB tse nang le mekhahlelo e 'meli li fana ka ts'ebetso e ntlafetseng le botsitso ba mochini ha li ntse li boloka ts'ebetso e matla ea mocheso bakeng sa lisebelisoa tsa motlakase tse matla ho isa bohareng.

Li-stack-up tsa MCPCB tse ngata

Phethahatso e rarahaneng ea Meaho

Ho bokellana ha MCPCB e nang le mekhahlelo e mengata ho feta mekato e 'meli ea koporo, ho kenyelletsa mekato e mengata ea dielectric le likarolo tse tsoetseng pele tsa taolo ea mocheso tse kang li-slugs tsa koporo tse kentsoeng kapa liphaephe tsa mocheso tse kopantsoeng.

• Bokhoni ba ho hokahana ka bongata bo boholo - E ts'ehetsa lipotoloho tse rarahaneng tsa taolo le meralo ea lipontšo tse tsoakiloeng ka mekhahlelo e mengata ea conductive.
• Mehaho ea ho ntlafatsa mocheso - E sebelisa libaka tse khethiloeng tsa li-vias tse futhumatsang le libaka tsa ho tšela koporo ho boloka khokahano lipakeng tsa matla le likarolo tsa taolo.
• Litlhoko tsa tlhahiso e nepahetseng - E batla ngoliso e nepahetseng ka har'a ± 50 µm le botenya ba dielectric bo sa fetoheng ho liphanele tse kholo.
• Lamination control - Katoloso ea Z-axis le ho hokahanya ha thepa nakong ea khatiso e tlameha ho laoloa ka hloko ho thibela delamination kapa ho se lumellane.

Sebopeho sena se tsoetseng pele se nolofalletsa ho kopanya ho phahameng le tsamaiso e phahameng ea mocheso bakeng sa likopano tsa elektronike tse nang le matla.

Litharollo tse tsoetseng pele tsa Thermal

• Mokhoa oa 3D oa mocheso - E lekola mocheso oa lateral o hasang ka lifofane tsa koporo le tsamaiso e otlolohileng ka marang-rang.
• Likarolo tse inehetseng tsa mocheso - E abela likarolo tse ikhethileng joalo ka lifofane tse hasang mocheso tse nang le mats'oao a manyane ho ntlafatsa ho ts'oana ha mocheso.
• Khokahano ea Via-in-pad - E ntlafatsa ho kopana ha mocheso ho tloha likarolong tse hlahisang mocheso ho ea ho motheo oa koporo kapa oa tšepe.
• Kaho e kopaneng ea li-stack-up - E kopanya libaka tsa MCPCB tse nang le mocheso o phahameng oa mocheso le likarolo tse tloaelehileng tsa FR-4 bakeng sa litšenyehelo tse ntlafalitsoeng le tekanyo ea ts'ebetso.
• Kopo ea kopo - E loketse liboto tsa li-server tse matla a phahameng, li-inverters tsa EV, le liteishene tsa mehala ea mehala moo meroalo ea mocheso e fetang 100 W ka boto.

Multilayer MCPCB stack-up e emela boemo bo phahameng ka ho fetisisa ba ho kopanya mocheso le motlakase, ho koala litlhoko tsa ts'ebetso pakeng tsa li-MCPCB tsa setso le meralo e tsoetseng pele ea PCB.

Lintlha tsa Boenjiniere bakeng sa Moralo oa Stack-up oa MCPCB

Ho ntlafatsa Tsela ea Mocheso

Moralo o sebetsang hantle oa tsela ea mocheso ho li-stack-up tsa MCPCB o hloka ho fokotsa khanyetso ea mocheso sehokelong se seng le se seng, ho tloha mateanong a karolo ho isa ho sehokelo sa ho qetela sa sekoaelo sa mocheso. Baenjiniere ba tlameha ho nahana ka mocheso ka ho beoa ka kotloloho tlas'a lisebelisoa tse matla a phahameng, ho ntlafatsa ka bophara le sekontiri bakeng sa likarolo tse ngata tsa koporo ha li ntse li boloka botšepehi ba sebopeho. Ho hasana ka mocheso ka mekhahlelo ea koporo ho rua molemo ho tloha botenya bo eketsehileng (2-4 oz), leha sena se tlameha ho leka-lekana khahlanong le litlhoko tsa potoloho e ntle le bokhoni ba tlhahiso.

Tšebelisano 'moho le Tšepahala

The coefficient of thermal expansion (CTE) e sa lumellaneng pakeng tsa lisebelisoa tse ka har'a stack-up ea MCPCB e baka khatello ea kelello nakong ea mocheso oa libaesekele, tse ka bakang delamination kapa ho phatloha. Li-substrates tsa Aluminium (CTE: 23 ppm/°C) tse kopantsoeng le FR-4 dielectrics (CTE: 14-17 ppm/°C) li hloka ho nahaneloa ka hloko ha moralo bakeng sa mekhahlelo ea mocheso o sebetsang. Matla a ho khomarela sefahleho, a lekoa ka ho ts'oaroa ha mocheso le tlhahlobo ea seapehi sa khatello, a tiisa ho ts'epahala ha nako e telele libakeng tse thata.

Litšitiso tsa Ts'ebetso ea Tlhahiso

Moralo oa li-stack-up oa MCPCB o tlameha ho amohela mefokolo ea tlhahiso ho kenyelletsa botenya ba dielectric bo tlase bakeng sa tšireletso e se nang likoti (hangata li-micrometer tse 75), boholo ba likarolo tsa li-vias tse chekang (8: 1 bakeng sa lits'ebetso tse tloaelehileng), le mamello ea ngoliso lipakeng tsa mekhahlelo. Khetho ea ho qeta bokaholimo e ama ts'ebetso ea solderability le sehokelo sa mocheso, ha HASL e fana ka ts'ebeliso e ntle ea litšenyehelo ha ENIG e fana ka botenya bo phahameng bakeng sa ts'ebeliso ea lisebelisoa tsa mocheso oa mocheso. Ts'ebeliso ea liphanele le mekhoa ea ho petsola e susumetsa ntlafatso ea litšenyehelo, haholo bakeng sa meralo e hlokang ho tsamaisoa ha karolo e ka tlaase ea tšepe.

Qetello: Ho aha Meaho e Tšepahalang ea Thermal ka Stack-up e nepahetseng ea MCPCB

Sebopeho sa li-stack-up tsa MCPCB se hlalosa motheo oa ts'ebetso ea mocheso, botšepehi ba motlakase, le ho tšepahala ha nako e telele lits'ebetsong tsa motlakase tsa motlakase. Ho tloha meahong e nang le lera le le leng e ntlafalitsoeng bakeng sa phetisetso ea mocheso e theko e tlaase ho ea ho meaho e rarahaneng ea multilayer e tšehetsang potoloho e teteaneng, moralo o mong le o mong o tlameha ho leka-lekanya litlhoko tsa mocheso le motlakase ho latela litlhoko tsa kopo. Moralo o sebetsang hantle oa ho bokella li-stackup o netefatsa ts'ebetso e tsitsitseng tlas'a meroalo e phahameng ea mocheso le ho lelefatsa bophelo ba sehlahisoa libakeng tse boima.

Ho Highleap Electronics , re ikhethile ho nts'etsapele le ho hlahisa litharollo tsa MCPCB tse entsoeng ka boenjiniere bo nepahetseng. Bokhoni ba rona bo kenyelletsa:

• Ka ho feletseng ho ntlafatsa moralo oa stack-up ho sebedisa e tsoetseng pele ketsiso ya mocheso lithulusi.
• Sekoaelo se sephara sa potefolio aluminium, koporo, le metheo ea tšepe e nyalisitsoeng.
• Nepahetseng taolo ea botenya ba dielectric le ho lokisoa ha li-multilayer bakeng sa ho haha ​​​​tse tšepahalang haholo.
• Qetellong Tlhahiso ea MCPCB le litšebeletso tsa kopano tlas'a litsamaiso tsa boleng tse netefalitsoeng ke ISO.

Hore na o rala litsamaiso tsa LED tse matla haholo, li-module tsa taolo ea enjene, kapa lisebelisoa tsa puisano, Highleap Electronics e fana ka tšehetso ea boenjiniere le boiphihlelo ba tlhahiso ho fetola likhopolo tsa hau tsa moralo oa mocheso hore e be litharollo tse sebetsang hantle, tse itokiselitseng tlhahiso. Ikopanye le sehlopha sa rona ho buisana ka litlhoko tsa hau tsa ho bokellana ha MCPCB kapa ho kopa puisano ea tekheniki.