Mefuta ea Aluminium PCB

Selelekela

Li-PCB tsa Aluminium, tse tsejoang hape e le Aluminium Clad, Li-PCB tsa Metal Clad (MCPCB), Insulated Metal Substrate (IMS), kapa Li-PCB tse tsamaisang mocheso, ke liboto tsa potoloho tse hatisitsoeng tse khethehileng tse etselitsoeng ts'ebetso e phahameng ea mocheso. Ho tloha ha li ntse li ntlafatsoa lilemong tsa bo-1970, lits'ebetso tsa tsona li atolohile haholo, haholo-holo mabone a LED , lisebelisoa tsa motlakase le litsamaiso tsa likoloi. Liboto tsena li tsebahala ka ho qhalana ha mocheso ka katleho, ho fokotsa tšitiso ea motlakase (EMI), le ho tšoarella ha mechini, e leng se etsang hore li be tsa bohlokoa bakeng sa lisebelisoa tsa sejoale-joale tsa elektroniki.

Sengoliloeng sena se shebana le ho hlophisoa ha li-PCB tsa aluminium ho latela mofuta oa thepa, litšobotsi tsa bona tsa ts'ebetso, le hore na khetho ea thepa e ama sehlahisoa sa ho qetela joang.

Ts'ebetso ea Aluminium PCBs: Tlhahlobo e Felletseng

Ho senyeha ha Mocheso

Li-PCB tsa Aluminium li fana ka phallo e phahameng ea mocheso ha e bapisoa le liboto tsa setso tsa FR4, e leng se etsang hore e be khetho e ratoang bakeng sa lits'ebetso moo taolo e sebetsang ea mocheso e leng bohlokoa. Bokhoni ba PCB ba ho fetisetsa mocheso hole le likarolo tse bobebe bo netefatsa ts'ebetso e tsitsitseng mme e fokotsa kotsi ea ho hloleha ha mocheso. Phapang e ka sehloohong ea ho hanyetsa mocheso pakeng tsa mefuta ena e 'meli ea li-PCB e totobatsa sena:

• FR4 PCB: E bonts'a ho hanyetsa mocheso oa 20-22 ° C ka watt bakeng sa botenya ba 1.5 mm.
• Aluminium PCB: E fihlella 1-2 ° C ka watt bakeng sa botenya bo tšoanang.

Phapang ena e kholo e totobatsa bokhoni ba li-PCB tsa aluminium tsa ho fetisetsa mocheso ka mokhoa o atlehileng haholoanyane, ho ntlafatsa ts'ebetso le ts'epahalo ea lisebelisoa tsa elektronike tse matla haholo. Ka lebaka leo, li na le thuso ka ho khetheha ho li-module tsa LED, li-converter tsa matla, le lisebelisoa tse ling tse phahameng tsa morao-rao moo mocheso oa mocheso o lokelang ho laoloa ho thibela ho senyeha ha ts'ebetso le ho hlōleha ha likarolo.

Ho Atolosoa ha Mocheso le Botsitso

Phephetso e boima ho lisebelisoa tsa elektronike ke ho laola katoloso ea mocheso, moo thepa e atolohang kapa e kopanang tlas'a phapang ea mocheso. Li-PCB tsa Aluminium li rua molemo ho li-coefficients tse bapisoang tsa katoloso ea mocheso (CTE) lipakeng tsa lisebelisoa tsa bona tsa bohlokoa tsa ho tsamaisa:

• aluminiumCTE ea 22 ppm/°C
• koporoCTE ea 18 ppm/°C

Ho ts'oana hona ho fokotsa khatello ea kelello lipakeng tsa mekhahlelo nakong ea ho futhumatsa le ho pholisa. Libotong tsa setso tsa FR4, ho se tšoane ha boleng ba CTE lipakeng tsa koporo le thepa ea ho itšireletsa ho ka baka warping kapa delamination, e lebisang ho hloleheng ha potoloho. Leha ho le joalo, li-PCB tsa aluminium li bonts'a botsitso bo ntlafetseng, bo etsang hore li tšoarelle le ho tšepahala tlas'a khatello ea mocheso.

Monyetla ona o bohlokoa lits'ebetsong tsa likoloi, tsa indasteri, le tsa sefofane, moo likarolo tsa eona li pepesehelang liphetoho tsa mocheso khafetsa le tse potlakileng. Mekhoa e phahameng ea ts'ebetso e nang le litlhoko tse thata tsa mocheso e rua molemo haholo tšobotsing ena, kaha e tiisa ho tšepahala ha nako e telele ea ts'ebetso.

Botsitso ba Dimensional

Botsitso bo boholo ke ntlha ea bohlokoa ho netefatsa ts'ebetso e tsitsitseng ea mochini le motlakase maemong a fapaneng a tikoloho. Li-PCB tsa Aluminium li bonts'a botsitso bo phahameng le tlas'a liphetoho tse kholo tsa mocheso. Ka mohlala:

• Ha e futhumatsoa ho tloha ho 30 ° C ho ea ho 140 ° C, aluminium PCBs e eketseha feela ka 2.5% ho ea ho 3%.

Phetoho ena e fokolang ea boholo e tiisa hore mesaletsa ea potoloho le likarolo li lula li hokahane, ho thibela mathata a khokahanyo. Boitšoaro bona bo tsitsitseng bo bohlokoa ho lisebelisoa tsa elektronike tse nepahetseng le li-sensor modules, moo esita le liphetoho tse nyenyane tse ka bakang ho se lumellane kapa ho senyeha ha matšoao. Li-PCB tsa Aluminium, ka hona, li ipabola lits'ebetsong tse bohlokoa haholo moo ho ts'epahala le ho nepahala ho ke keng ha buisanoa.

Tšitiso ea Motlakase (EMI) Shielding

Li-PCB tsa Aluminium ka tlhaho li fana ka tšireletso ea tlhaho ea motlakase (EMI) ka lebaka la karoloana ea tšepe. EMI e ka sitisa lisebelisoa tsa elektronike tse hlokolosi, ea theola boleng ba matšoao, 'me ea baka tahlehelo ea data, ea etsa hore tsamaiso ea EMI e be eona ntho e tlang pele lits'ebetsong tse ngata.

Lera la aluminium ea tšepe le sebetsa joalo ka sefofane sa fatše, se thusang ho monya le ho ba le mats'oao a khelohileng a motlakase. Karolo ena e etsa hore li-PCB tsa aluminium li lokele ho:

• Lipotoloho tsa matla: Moo maqhubu a phahameng a ka hlahisang lerata le leholo la motlakase.
• Lisebelisoa tsa puisano: Tse kang li-module tsa RF, moo botšepehi ba matšoao bo leng bohlokoa bakeng sa ts'ebetso e sebetsang.

Tšireletso ea EMI e kopantsoeng e fokotsa tlhokahalo ea likarolo tse ling tsa tšireletso, ho nolofatsa moralo le ho fokotsa boholo ba kakaretso le boima ba sesebelisoa. Bokhoni bona bo tiisa hore phetisetso ea data e lula e tšepahala ebile e se na tšitiso, e etsa hore li-PCB tsa aluminium e be tsa bohlokoa haholo lits'ebetsong tsa puisano tse se nang mohala, lisebelisoa tsa marang-rang le lisebelisoa tsa ts'ebetso ea matšoao.

Ka kakaretso, li-PCB tsa aluminium li fana ka melemo ea bohlokoa ea ts'ebetso tsamaisong ea mocheso, botsitso ba litekanyo, le tšireletso ea EMI, e leng se etsang hore li be tsa bohlokoa lits'ebetsong tse sebetsang hantle le tse nepahetseng. Bokhoni ba tsona ba ho boloka botšepehi ba sebopeho le motlakase tlas'a maemo a thata bo netefatsa ts'epo e phahameng le bophelo bo bolelele ho pholletsa le liindasteri tse kang likoloi, lifofane, mabone a LED le boiketsetso ba indasteri.

Classification of Aluminium PCBs by Material Type

1. Li-PCB tse tloaelehileng tsa Aluminium

Li-PCB tse tloaelehileng tsa aluminium li sebelisa epoxy glass fiber pre-preg e le thepa ea dielectric. Sebopeho sena se lumella ho leka-lekana pakeng tsa tsamaiso ea mocheso le motlakase oa motlakase, ho etsa hore e tšoanelehe bakeng sa likopo tse tloaelehileng. Botenya bo feto-fetohang ba lesela la dielectric le ho feta ho ntlafatsa ho feto-fetoha ha tsona, ho netefatsa hore ba fihlela litlhoko tse fapaneng tsa moralo le ts'ebetso. Ka lebaka la moralo oa bona o batlang o le bonolo le ho fumaneha ha thepa, mapolanka ana a atisa ho kenngoa ts'ebetsong moo litlhoko tsa mocheso li itekanetseng empa li hloka ho senya mocheso o ka tšeptjoang.

Li-PCB tsena li fumaneha hangata lits'ebetsong tsa mabone a LED le lisebelisoa tsa elektroniki tse sebelisang matla a tlase. Bokhoni ba bona ba ho sebetsana le meroalo e itekanetseng ea mocheso bo tiisa ts'ebetso e tsoelang pele ntle le ho senyeha ho hoholo ha mocheso. E tumme ka lisebelisoa tsa mabone a ntlo le lisebelisoa tse bonolo, mapolanka ana a kopanya ho khoneha le ho tšoarella, ho etsa hore e be khetho e khahlehang bakeng sa bahlahisi ba batlang ho fana ka lihlahisoa tse theko e tlaase ntle le ho senya ts'ebetso kapa ho tšepahala.

2. High Thermal-Conductivity Aluminium PCBs

Li-PCB tsa aluminium tse nang le mocheso o phahameng oa mocheso li na le lesela le tsoetseng pele la epoxy resin dielectric le lumellang phetisetso e phahameng ea mocheso. Sebopeho sena se ikhethang se lumella li-PCB tsena ho qhala mocheso ka katleho ho feta liboto tse tloaelehileng, ho etsa bonnete ba hore likarolo tse hlokolosi li sirelelitsoe khatellong ea mocheso. Li-PCB tsena li etselitsoe maemo ao ho ona ho leng bohlokoa ho laola mocheso, ho netefatsa hore lisebelisoa li ka sebetsa ka ho tsoelang pele tlas'a meroalo e phahameng ntle le ho chesa haholo.

Tšebeliso ea bona e bohlokoa ho lisebelisoa tsa elektronike tse matla tse kang lilaoli tsa likoloi tsa indasteri, likoloi tsa motlakase, le li-module tsa mabone a LED. Lisebelisoa tsena li hloka litharollo tse matla tsa mocheso ho thibela mocheso o feteletseng, o ka fokotsang ts'ebetso le ho lebisa ho se sebetseng ha karolo pele ho nako. Ka ho fana ka phepelo e sa fetoheng ea mocheso, li-PCB tsa aluminium tse nang le mocheso o phahameng oa mocheso li bapala karolo ea bohlokoa ho ntlafatseng ts'ebetso le nako ea bophelo ea lisebelisoa tse tlas'a ts'ebeliso e tsoelang pele kapa e matla.

3. Li-PCB tsa Aluminium tse phahameng-Frequency

Li-PCB tsa aluminium tsa maqhubu a phahameng li entsoe ka lisebelisoa tse khethehileng tsa polyolefin kapa polyimide resin fiber pre-preg ho ts'ehetsa ts'ebetso e nepahetseng ea motlakase ka maqhubu a phahameng. Lisebelisoa tsena li fokotsa tahlehelo ea matšoao le tšitiso, li etsa hore li tšoanelehe ka ho khetheha bakeng sa libaka tse phahameng tsa maqhubu. Bokhoni ba bona ba ho boloka bots'epehi ba motlakase bo netefatsa hore ba fihlela litlhoko tse thata tsa lits'ebetso tse hlokang phetiso ea mats'oao ka nepo.

Liboto tsena li fumana ts'ebeliso e kholo ho li-module tsa RF, litsamaiso tsa puisano, le li-sensor, haholo-holo ho mahlale a tsoetseng pele joalo ka sistimi ea radar le marang-rang a waelese. Li-PCB tsa aluminium tsa maqhubu a phahameng li sebetsa hantle haholo ho fokotsa tšitiso ea motlakase (EMI), e leng bohlokoa bakeng sa ho boloka ho hlaka le ho netefatsa phetiso ea data e tšepahalang. Libakeng tseo matšoao a leng kotsing ea ho senyeha, li-PCB tsena li fana ka tharollo e tšepahalang bakeng sa ho netefatsa puisano e se nang moeli le phallo ea data.

fihlela qeto e

Li-PCB tsa Aluminium li fetohile tsa bohlokoa liindastering tse hlokang ts'ebetso ea mocheso, ho tšoarella ha mochini, le ts'ireletso ea EMI. Ho hlophisoa ha li-PCB tsa aluminium ho ea ka mefuta e tloaelehileng, e phahameng ea mocheso-mocheso, le mefuta e phahameng ea maqhubu e lumella baenjiniere ho khetha moralo o loketseng ka ho fetisisa bakeng sa lits'ebetso tsa bona. Khetho e nepahetseng ea thepa, joalo ka ho sebelisa li-polymers tse tlatsitsoeng ka ceramic bakeng sa phetisetso ea mocheso kapa likarolo tsa polyimide bakeng sa maemo a bonolo, li bapala karolo ea bohlokoa ho ntlafatseng ts'ebetso ea sehlahisoa.

Ho sa tsotellehe liphephetso tsa tlhahiso, tse kang koporo ea koporo le khatiso ea mask ea solder, mekhoa e mecha ea mekhoa ea tlhahiso e tsoela pele ho etsa hore aluminium PCB e be tharollo e ratoang ka mabone a LED, motlakase oa motlakase, lisebelisoa tsa likoloi le lisebelisoa tsa puisano. Ha theknoloji e ntse e hatela pele, li-PCB tsa aluminium li tla lula li le bohlokoa bakeng sa lihlahisoa tsa elektroniki tse baballang matla, tse sebetsang hantle le tse tšepahalang.