Comprehensive Guide to FR4 PCB
FR4 PCB ke eng?
FR4 PCB Tlhaloso le Sebopeho
FR4 PCB e bua ka boto ea potoloho e hatisitsoeng e entsoeng ka thepa ea FR4, e leng fiberglass e matlafalitsoeng epoxy laminate. Lentsoe "FR" le emetse flame retardant, ha "4" e supa mofuta o itseng oa thepa. FR4 substrate e sebelisoa haholo hobane e fana ka sebopeho se tsitsitseng sa mochini le thepa e ntle haholo ea ho kenya dielectric.
Boto ea fiberglass ea FR4 hangata e na le lesela le lohiloeng la fiberglass e kopantsoeng le resin ea epoxy, e etsang laminate e thata le e tšoarellang. Sebopeho sena se etsa hore li-PCB tsa FR4 li tšoanelehe bakeng sa lits'ebetso tse fapaneng, ho tloha ho lisebelisoa tsa elektroniki tsa bareki ho isa lits'ebetsong tsa taolo ea indasteri. Ka lebaka la ho leka-lekana ha matla a mochini, ho kenya motlakase, le ho baballa litšenyehelo, FR4 e ntse e le khetho e tloaelehileng bakeng sa merero e mengata ea tlhahiso ea PCB.
FR4 PCB Melemo
1. Lelakabe Retardant - E etselitsoe ho hanela mollo, ho netefatsa ts'ebetso e sireletsehileng esita le tlas'a maemo a phahameng a mocheso.
2. Ho boloka litšenyehelo - E batla e le theko e tlaase ha e bapisoa le thepa e khethehileng, e etsang hore e be e loketseng bakeng sa tlhahiso ea bongata.
3. Botsitso ba Mechini - E fana ka matla a matle a mochini le botsitso bakeng sa meralo e fapaneng ea PCB.
4. Boteng bo Bophara - E fumaneha habonolo 'marakeng, e netefatsa theko e bonolo.
5. Ho lumellana ho pharaletseng - E sebetsa ka lisebelisoa tse ngata tsa PCB tse kang HASL, ENIG le OSP.
6. Tšebeliso e Ikhethang - E loketse li-PCB tse ngata, liboto tse mahlakoreng a mabeli le li-prototypes.
FR4 PCB Meeli
1. Meeli e Phahameng ea Maqhubu - Ha e ea nepahala bakeng sa li-circuits tsa maqhubu a phahameng kapa lits'ebetso tsa RF tse kaholimo ho 10 GHz.
2. Tekanyetso ea Thermal Conductivity - Conductivity e tlase ea mocheso ha e bapisoa le li-PCB tsa tšepe-core, tse amang ho senyeha ha mocheso.
3. Sensitivity ea Lik'hemik'hale - E ka senyeha tlas'a lik'hemik'hale tse matla kapa li-solvents.
4. Thermal Cycling Drift - E tloaetse ho ba le warpage kapa delamination tlas'a lipotoloho tse feteletseng tsa mocheso.
5. Siling ea Tshebetso - Ha e tšoanelehe bakeng sa meralo ea mocheso e phahameng haholo kapa e tsoetseng pele.
6. Mongobo oa Mongobo - E monya mongobo ka nako, e ama thepa ea dielectric le ho ts'epahala ha nako e telele.
Highleap Electronics - Moetsi oa FR4 PCB
Highleap Electronic e hlahella e le mofani ea ka sehloohong oa tlhahiso le kopano ea FR4 PCB, e kopanyang theknoloji e tsoetseng pele, taolo e matla ea boleng, le litharollo tse tenyetsehang, tse shebaneng le bareki. Melemo ea bohlokoa ke ena:
Litšebeletso tse pharalletseng tsa FR4 PCB
Re fana ka lits'ebeletso tsa tlhahiso le kopano ea FR4 PCB ho tloha qalong ho isa qetellong , ho tloha tlhahisong ea li-PCB tsa mohlala ho isa tlhahisong ea bongata bo phahameng. Bokhoni ba rona bo kenyelletsa li-PCB tsa FR4 tse nang le mekhahlelo e mengata, li-stack-up tse ikhethileng, le kopano ea FR4 PCB ka taolo e nepahetseng ea boleng, ho netefatsa tharollo e tšepahalang ea ho emisa hang.
Bokhoni bo Bophara ba Tlhahiso
Highleap Electronics e ts'ehetsa mefuta e mengata e fapaneng ea likhetho tsa botenya ba FR4 PCB, boima ba koporo, le liphetho tsa bokaholimo, e etsa hore ho khonehe ho fihlela litlhoko tse fapaneng tsa ts'ebeliso ho lisebelisoa tsa elektroniki tsa bareki, likoloi, tsa bongaka le tsa indasteri. Hore na ke FR4 PCB ea lehlakore le le leng, FR4 PCB e mahlakoreng a mabeli, kapa multilayer FR4 PCB, re ka sebetsana le merero e fihlang ho mekhahlelo e 60.
Ntlafatso ea Litšenyehelo ka Litharollo tsa FR4 PCB
Prototype ea rona ea FR4 PCB le lits'ebeletso tsa tlhahiso ea bongata li etselitsoe ho fana ka tharollo e sebetsang hantle ntle le ho beha boleng bo tlase. Ka ho ntlafatsa ts'ebeliso ea thepa, moralo oa liphanele le lits'ebetso tsa kopano, re thusa bareki ho fihlela tlhahiso e theko e tlaase ea FR4 PCB e ts'ehetsang liteko tsa R&D le tlhahiso e kholo.
Phetoho e potlakileng le phano ea nako
Ka mela e tsoetseng pele ea tlhahiso le taolo e tiileng ea phallo ea mosebetsi, re netefatsa prototyping ea FR4 PCB e potlakileng le kopano ea PCB e fetohang ka potlako. Mekhoa ea rona ea ho etsa lintho tse fokolang e re lumella ho fokotsa nako ea ho etella pele haholo, ho thusa bareki ho potlakisa nako ea ho ea 'marakeng bakeng sa lihlahisoa tsa bona tsa elektroniki.
Highleap Electronics' FR4 PCB Manufacturing Capabilities
Items
bokgoni
Lisebelisoa tsa FR4 PCB & Kereiti
FR4 ke epoxy laminate e matlafalitsoeng ka khalase e sebelisoang haholo ho fetisisa tlhahisong ea PCB, e nkoang e le ea bohlokoa ka lebaka la matla a eona a matle a mochini, ho kenya motlakase le ho baballa litšenyehelo. Ka tlase ke tlhaloso e qaqileng ea li-substrates tsa FR4, limaraka tsa bohlokoa, le metrics ea ts'ebetso ho u thusa ho khetha tharollo e nepahetseng bakeng sa kopo ea hau.
FR4 Sebopeho sa Substrate
Thepa ea PCB ea FR4 ke substrate e kopaneng e entsoeng haholo-holo ka lesela la fiberglass le lohiloeng le tšetsoeng ka resin ea epoxy, le matlafalitsoeng ka li-additives tse thibelang malakabe tse nang le brominated. Motsoako ona o netefatsa hore li-substrate tsa FR4 li fihlela maemo a ho hanyetsa malakabe a UL94 V-0, e leng se etsang hore e be e 'ngoe ea li-laminate tse koahetsoeng ka koporo (CCL) tse sebelisoang haholo tlhahisong ea PCB. Sebopeho sa fiberglass ea epoxy se fana ka botsitso ba mechini, ha sistimi ea resin e ntlafatsa ho kenya mocheso le ho tlamahana ka foil ea koporo. Nakong ea tlhahiso ea PCB, mekhahlelo e mengata ea FR4 prepreg e laminated tlas'a mocheso o phahameng le khatello, e leng se etsang thepa e tiileng ea motheo ea FR4 bakeng sa liboto tsa potoloho tsa lera le le leng, tse nang le lera le habeli le tse nang le lera le lengata.
Glass Transition Themperature le Kereiti
E 'ngoe ea litlhaloso tsa bohlokoa ka ho fetisisa tsa thepa ea FR4 ke mocheso oa eona oa phetoho ea khalase (Tg). Lisebelisoa tse tloaelehileng tsa PCB tsa FR4 hangata li na le Tg e ka bang 150°C , e loketseng lisebelisoa tsa elektroniki tsa bareki le lisebelisoa tse sebelisoang ka kakaretso. Bakeng sa ts'epo e phahameng, li-PCB tsa High-Tg FR4 li fana ka boleng ba Tg ba 170°C kapa ho feta, tse fanang ka khanyetso e betere khatellong ea mocheso, katoloso e fokotsehileng nakong ea ho kopanya hape, le matla a ntlafalitsoeng a mechini. Lits'ebetsong tse tsoetseng pele joalo ka lisebelisoa tsa elektroniki tsa likoloi, lifofane le litsamaiso tsa taolo ea indasteri, li-laminate tsa FR4 TG180+ hangata lia khethoa, kaha li fana ka botsitso bo botle ba litekanyo tlas'a potoloho ea mocheso e pheta-phetoang.
FR4 Materials Properties
Lisebelisoa tsa FR4 PCB li kopanya ts'ebetso ea motlakase e ts'epahalang, botsitso bo matla ba mocheso, le matla a matla a mochini, e leng se etsang hore e be karolo e sebelisoang haholo ea PCB. Tafole e ka tlase e totobatsa thepa ea bohlokoa ea FR4 PCB substrate ho kenyelletsa kamehla dielectric, dissipation factor, decomposition mocheso, le matla a ho jara mojaro bakeng sa lits'ebetso tse fapaneng.
| Property | Boleng bo Tlwaelehileng / Range | Notes |
|---|---|---|
| Thepa ea Motlakase | ||
| Dielectric Constant (Dk) | 4.25 - 4.55 @ 1 MHz | E ama impedance ho multilayer FR4 PCBs; boleng bo fokotseha ka maqhubu a holimo (mohlala, ~3.8 - 4.2 @ 10 GHz) |
| Dissipation Factor (Df) | ~0.012 – 0.020 @ 1 MHz | Ka tlaase ho molemo bakeng sa botšepehi ba pontšo ea lebelo le phahameng; e ts'ehetsa phetiso e tšepahalang lits'ebetsong tsa dijithale / RF PCB |
| Matla a Dielectric | ~18 – 22 kV/mm (e tloaelehileng ~20 kV/mm) | E kopana le IPC-4101 bonyane bo hlokahalang (≥15 kV/mm); e netefatsa ts'epahalo e phahameng ea insulation lipakeng tsa likarolo tsa conductive |
| Comparative Tracking Index (CTI) | 175 - 600 V | E hlalosa ho hanyetsa ho senyeha ha motlakase; 175–250 V (e tloaelehileng FR4), 400–600 V (e phahameng-leakage-resistance FR4 bakeng sa matla a indasteri) |
| Thepa ea Thermal | ||
| Mocheso oa Phetoho ea Khalase (Tg) | 150 - 180+ °C | Tg e phahameng = botsitso bo betere ba mocheso; 150°C (standard FR4), 170°C (high-Tg FR4), 180+°C (ultra-high-Tg for auto/airspace) |
| Decomposition Temperature (Td) | 320 - 340 °C (e tloaelehileng FR4); ~345 °C (high-Tg/halogen-free FR4) | Mocheso ka 5% ho lahleheloa ke boima ba 'mele (ka IPC-TM-650); e bonts'a khanyetso ea ho senyeha ha mocheso bakeng sa reflow soldering |
| Ho monya mongobo | ~0.08 – 0.12% (e tloaelehileng ~0.10%) | Lekoa ka IPC-TM-650 (23°C, 50% RH, 24h); e netefatsa botsitso tlas'a mongobo, ho thibela ho ruruha / delamination |
| Mechanical Properties | ||
| Tensile & Flexural Matla | Holimo (450–600 MPa tensile; 500–700 MPa flexural, e tloaelehileng) | Litekanyetso li fapana ho ea ka moetsi; e kopana le litekanyetso tsa IPC-4101; e tiisa bokhoni bo botle ba ho jara le ho hanyetsa khatello ea mochine |
| Botsitso ba Dimensional | E ntle haholo tlas'a libaesekele tse futhumetseng | E fokotsa ho ruruha le ho ferekana kelellong; e loketseng ditikoloho tse nang le ho feto-fetoha ha mocheso ka makgetlo |
Mefuta ea FR4 PCB le Litlhophiso tsa Lera
Mefuta e Tloaelehileng vs e Phahameng ea Ts'ebetso ea FR4
1. PCB e Tloaelehileng ea FR4 – Khetho e sebelisoang haholo bakeng sa lisebelisoa tsa elektroniki tsa bareki le lisebelisoa tsa indasteri. Thepa e Tloaelehileng ea FR4 e fana ka tekano ea katleho ea litšenyehelo le matla a mechini, e leng se etsang hore e lokele lits'ebetso tsa PCB tse lehlakoreng le le leng le tse mahlakoreng a mabeli.
2. PCB ea FR4 e nang le TG e Phahameng – E etselitsoe ho tšepahala ho phahameng mochesong, mofuta ona oa PCB ea FR4 o loketse lisebelisoa tsa elektroniki tsa likoloi, lisebelisoa tsa motlakase, le lisebelisoa tse nang le maqhubu a phahameng. Ka mocheso oa phetoho ea khalase o fetang 170°C, liboto tsa FR4 tse nang le TG e Phahameng li boloka botsitso tlas'a mocheso le khatello.
3. PCB ea High-CTI FR4 – Liboto tsena li fana ka Comparative Tracking Index e kaholimo ho 600V, e thusang ho thibela maqhubu a ho lutla le ho hloleha ha motlakase libakeng tse mongobo kapa tse nang le motlakase o mongata. High-CTI FR4 e atisa ho sebelisoa lisebelisoa tsa bongaka le litsamaisong tsa othomathiki tsa indasteri.
4. PCB ea FR4 e se nang Halogen – Mofuta o mosa tikolohong o felisang lintho tse thibelang malakabe tse thehiloeng ho halogen. Liboto tsa FR4 tse se nang Halogen li fihlela litekanyetso tse tiileng tsa RoHS le tsa ho latela tikoloho, e leng se etsang hore li lokele lisebelisoa tsa elektroniki tse tala le moralo oa PCB o tsitsitseng.
Layer Count Options
1. PCB ea FR4 e Lehlakoreng le le Leng – E bonolo ebile e theko e tlase, e sebelisoang haholo mabone a LED, lisebelisoa tsa bareki, le lits'ebetsong tse nang le bongata bo tlase.
2. PCB ea FR4 e Mahlakoreng a Mabeli – Khetho e feto-fetohang bakeng sa lipotoloho tse rarahaneng haholoanyane, e lumellang mesaletsa mahlakoreng ka bobeli a boto. Li-PCB tsa FR4 tse nang le mekhahlelo e 'meli li sebelisoa haholo litsamaisong tsa taolo ea indasteri le lisebelisoa tsa lapeng.
3. Multilayer FR4 PCB (mealo e 4–60) – Litlhophiso tse nang le bongata bo phahameng tse etselitsoeng lisebelisoa tsa elektroniki tse tsoetseng pele, ho kenyeletsoa le mehala ea puisano, lisebelisoa tsa bongaka le lits'ebetso tsa lifofane. Liboto tsa Multilayer FR4 li nolofalletsa ho bokellana ha PCB e nyane ka botšepehi bo ntlafetseng ba lets'oao le EMI e fokotsehileng.
Litlhaloso tsa Botenya le Boima
1. Mefuta e fapaneng ea Botenya ba PCB – Liboto tsa potoloho tsa FR4 li fumaneha ka botenya ho tloha ho 0.1mm ho isa ho 6.0mm , e leng se etsang hore li fetohe bakeng sa meralo e mesesaane e tenyetsehang hammoho le lits'ebetso tse thata tse nang le matla a phahameng.
2. Likhetho tsa Boima ba Koporo – Boima bo tloaelehileng ba koporo bo tloha ho 1oz ho isa ho 3oz , 'me ho na le mokhoa oa ho iketsetsa o fumanehang bakeng sa bokhoni bo phahameng ba ho jara motlakase ka har'a li-PCB tsa motlakase le tsa likoloi.
3. Taolo ea ho kobeha ho li-PCB tsa FR4 - Mekhoa e nepahetseng ea moralo le ea ho kobeha e thusa ho fokotsa ho kobeha ha PCB, e leng habohlokoa bakeng sa liboto tsa FR4 tse nang le mekhahlelo e mengata le lits'ebetso tse hlokang ho nepahala ho hoholo ha kopano.
Phahameng Tg FR4 PCB
Multilayer FR4 PCB
Mekhoa ea Tlhahiso ea FR4 PCB
Mekhoa e Meholo ea Tlhahiso
Ho khetha lipakeng tsa paterone ea plating le electroplating e mpe ho ipapisitse le bongata ba potoloho, bophara ba conductor / sebaka, le bophahamo ba tlhahiso, ho e etsa qeto ea bohlokoa ts'ebetsong ea tlhahiso ea FR4 PCB:
1. Mokhoa oa ho roala mohlala ke mokhoa o sebelisoang haholo oa tlhahiso ea FR4 PCB, moo koporo e kenngoa feela libakeng tse hlalositsoeng ke setšoantšo sa potoloho. Sena se lumella taolo e nepahetseng ea botenya ba koporo le mekhoa e tšepahalang ea conductor.
2. Mokhoa o fosahetseng oa electroplating, ka lehlakoreng le leng, e tlosa koporo e sa batleheng ho tloha phanele, e siea mekhoa ea potoloho. E na le litšenyehelo tse tlaase bakeng sa tlhahiso ea boleng bo phahameng 'me e thusa ho finyella boleng bo tsitsitseng ho li-multilayer FR4 PCB lesela.
Mekhoa e tsoetseng pele ea ho sebetsa
Ts'ebetso ena e tsoetseng pele e ts'ehetsa li-PCB tsa FR4 tse ts'epahalang haholo tse sebelisoang lits'ebetsong tsa mehala, tsa bongaka le tsa likoloi:
1. Laser Direct Imaging (LDI) boemo e fana ka ho nepahala ho holimo ho li-circuits tsa line-line, ho fokotsa liphoso tsa ho lumellana le ho nolofalletsa meralo e phahameng ea FR4 PCB.
2. Mekhoa ea ho kopanya tšepe, ho akarelletsa le electroless koporo plating, etsa bonnete ba ho khomarela ka matla pakeng tsa mekhahlelo le vias tse ka tšeptjoang, tse bohlokoa haholo tlhahisong ea multilayer FR4 PCB.
3. Theknoloji ea ho cheka joalo ka ho cheka ka mochini le ho cheka ka laser ho lumella ho nepahala ka popo. Ho cheka ka mechine ho loketse bakeng sa masoba, ha ho cheka ka laser ho nolofalletsa meaho ea microvia bakeng sa meralo e tsoetseng pele ea FR4 HDI PCB.
Taolo ea Boleng le Tlhahlobo
Tlhahlobo le liteko tse matla li netefatsa boleng bo tsitsitseng tlhahisong ea FR4 PCB, e fihlelang litekanyetso tsa machabeng tse joalo ka IPC Class 2 le Class 3.
1. Tlhahlobo e Ikemetseng ea Optical (AOI) e lemoha mefokolo ea holim'a metsi, ho se lumellane, le li-circuits tse bulehileng / tse khuts'oane pele ho ts'ebetso ea tlhahiso ea FR4 PCB, ho netefatsa litefiso tse phahameng tsa lihlahisoa.
2. Teko ea taolo ea impedance E bohlokoa bakeng sa li-PCB tsa FR4 tse sebelisoang ho li-circuits tse phahameng kapa tsa RF, tse netefatsang phetisetso ea mats'oao a tsitsitseng ho pholletsa le mesaletsa e laoloang.
3. Mekhoa ea ho hlahloba motlakase, ho kenyeletsoa tlhahlobo ea probe e fofang le tlhahlobo ea potoloho, netefatsa ho tsoelapele, ho hanyetsa ho kenella, le ts'ebetso pele e romelloa.
Qetello ea Bokaholimo le Lits'oants'o tsa Kopano
Likhetho tsa Qetello ea Bokaholimo
Ho khetha sebaka se nepahetseng sa PCB ho bohlokoa bakeng sa ho netefatsa hore o solderability, ts'epo ea motlakase le ts'ebetso ea nako e telele. Ho Highleap Electronics, re fana ka litharollo tse felletseng tsa PCB ho tsamaisana le moralo oa sehlahisoa sa hau, ts'ebetso le litlhoko tsa theko:
1. HASL (Hot Air Solder Leveling) - Qetello e bolokang chelete e ngata bakeng sa kopano ea mohlala ea PCB, empa ha e ntle bakeng sa likarolo tse hlakileng.
2. ENIG (Nickel e Immersion Gold e se nang Motlakase) - e sebelisoa haholo kopanong ea PCB e tšepahalang haholo ka lebaka la libaka tse bataletseng le ho solderability e ntle haholo.
3. TSO (Organic Solderability Preservative) - e loketse tlhahiso ea PCB e theko e tlase, e fanang ka khanyetso e ntle ea oxidation.
4. Silivera ea ho qoelisoa / Tin ea ho qoelisoa - e ratoa ka li-PCB tsa maqhubu a phahameng ka lebaka la khanyetso e tlase ea khokahano le bokaholimo bo boreleli.
5. Menoana ea Khauta - e etselitsoe lihokelo tse ka thoko lits'ebetsong tse hlokang ho tšoarella le lipotoloho tsa ho kenya khafetsa.
Kopano ea Ts'ebetso ea Kopano
Lisebelisoa tsa Mask tsa Solder le Silkscreen
Likopo tsa FR4 PCB le Likarolo tsa Maraka
01
Consumer Electronics & General Applications
1. Li-smartphone le matlapa - FR4 e sebetsa e le setsi sa mantlha sa lisebelisoa tsa mahareng moo litšenyehelo li leng bohlokoa.
2. Li-laptops le li-PC - Liboto tsa bo-'mè, likarete tsa litšoantšo, le liboto tsa I / O tsa interface.
3. Lisebelisoa tsa Lehae - Lithelevishene, mechini e hlatsoang liaparo, li-microwave le li-air conditioner.
4. Lisebelisoa tse aparoang - Li-smartwatches, li-trackers tsa boikoetliso (ha ho sa hlokahale maemo a phahameng).
5. Lipapali Consoles & Accessories - Liboto tsa balaoli, bonts'a liboto tsa bakhanni.
02
Likopo tsa likoloi le tsa indasteri
1. Lisebelisoa tsa Elektronike tsa Likoloi - Lihlopha tsa dashboard, litsamaiso tsa infotainment, li-module tsa fensetere ea matla, liboto tse nyane tsa ECU.
2. Lisebelisoa tsa Leseli tsa LED - Haholo-holo mabone a koloi le mabone a indasteri.
3. Mekhoa ea ho laola indasteri - Li-PLC, balaoli ba liroboto, le litsamaiso tsa boits'oaro.
4. Lisebelisoa tsa Matla le Bafetoleli - Li-converter tsa DC-DC, li-circuits tsa taolo ea betri.
5. HVAC & Motor Controllers - Liboto tsa taolo bakeng sa lipompo, libapali, li-compressor.
03
Likopo tse Phahameng ka ho Fetisisa le tse Khethehileng
1. Thepa ea Mehala - Li-routers, liteishene tsa motheo le li-switches tsa marang-rang (feela bakeng sa likarolo tse tlase ho isa bohareng ba maqhubu).
2. Lisebelisoa tsa Bongaka - Sistimi ea ho lekola bakuli, lisebelisoa tsa tlhahlobo (li-PCB tse sa hlokeng letho, tse sa sebetseng hantle).
3. Sefofane le Tšireletso (Tšebeliso e Lekanyelitsoeng) - E sebelisoa feela ho lisebelisoa tsa elektroniki tse sa hlokeng bohlokoa moo botsitso ba mocheso le RF li sa batleng.
4. RF & Microwave Circuits (Limited) - Ka tlase ho 10 GHz feela; ka holim'a sena, PTFE kapa li-PCB tsa ceramic lia khethoa.
5. Litlhoko Tse Ling – Bakeng sa libaka tse nang le maqhubu a mangata, matla a phahameng, kapa tse feteletseng, thepa e kang li-PCB tse khethehileng tse nang le tahlehelo e tlase, ceramic, kapa tšepe e ka sehloohong li nka sebaka sa FR4.
Khetho ea Lintho le Mekhoa e Meng
Ha FR4 e nepahetse
Bakeng sa meralo e mengata e tloaelehileng ea elektroniki, FR4 e ntse e le khetho e sebetsang ka ho fetesisa le e baballang chelete e ngata. Tekanyo ea eona ea matla a mochini, ho kenya motlakase, le ho hanyetsa lelakabe ho etsa hore e tšoanelehe bakeng sa lisebelisoa tsa elektroniki tsa bareki, lisebelisoa tsa IoT, lisebelisoa tsa motlakase le balaoli ba indasteri ba sepheo se akaretsang.
Haeba morero oa hau o hloka ts'ebetso e tšepahalang ea PCB ka litšenyehelo tse itekanetseng, khetho ea thepa ea FR4 PCB hangata ke qeto e utloahalang ka ho fetisisa. Ho khetha FR4 ho lumella bahlahisi ho boloka sebopeho se feto-fetohang, phepelo e tsitsitseng, le ts'ebetso e ntle ea litšenyehelo ha ba ntse ba fihlela litlhoko tsa mantlha tsa kopo.
Le hoja FR4 e sebetsa e le lisebelisoa tse ka tšeptjoang tsa lisebelisoa tse ngata tsa PCB, mefokolo ea eona ts'ebetsong ea maqhubu a phahameng le tsamaiso ea mocheso e totobatsa tlhokahalo ea mekhoa e meng. Bakeng sa merero eo ho eona ho sebetsa hantle, botsitso le ho tšoarella ho leng bohlokoa, ho lekola lisebelisoa tsa substrate tse tsoetseng pele ho feta FR4 e ba mohato oa bohlokoa oa ho fihlela liphetho tse nepahetseng.
Ho Fuputsa Mekhoa e Meng ea ho FR4 ho Lisebelisoa tsa PCB
Ha FR4 e sa khone ho fihlela litlhoko tse tsoetseng pele, lisebelisoa tse 'maloa tse khethehileng tsa PCB li fana ka tharollo e hlophisitsoeng:
1. Li-PCB tsa Metal-Core (MCPCBs) - E loketse mabone a LED, li-converter tsa motlakase, le meralo e phahameng ea hajoale ka lebaka la phallo e phahameng ea mocheso.
2. Li-PCB tse thehiloeng ho PTFE - E khethoa ho RF, liteishene tsa motheo tsa 5G, radar, le likhokahano tsa satellite moo tahlehelo e tlase ea dielectric le ts'ebetso e tsitsitseng ea maqhubu a phahameng e leng bohlokoa.
3. Li-Ceramic Substrates - Fana ka conductivity e ikhethang ea mocheso le botsitso bo boholo, ho etsa hore li tšoanele lisebelisoa tsa bongaka, lisebelisoa tsa elektroniki tsa sefofane, le li-sensor tsa likoloi.
Ho khetha thepa e nepahetseng ea substrate ea PCB ho ipapisitse le lebelo la lets'oao, letsoalo la matla, tikoloho ea ts'ebetso, le lipehelo tsa litšenyehelo.
Ho Highleap Electronics, ha re fane ka li-PCB tsa FR4 feela—re boetse re fana ka litharollo tsa tšepe-core, PTFE, le ceramic PCB ho thusa bareki ho fihlela tšebetso e nepahetseng liindastering tse fapaneng. Sehlopha sa rona sa boenjiniere se ka u tataisa khethong ea thepa le moralong oa ho bokella, ho netefatsa hore sehlahisoa sa hau se fihlela lipheo tsa tekheniki le tsa khoebo.
Fumana Quote ea hau ea FR4 PCB
Abelana feela lifaele tsa hau tsa Gerber kapa lintlha tsa projeke, 'me sehlopha sa rona sa boenjiniere se tla u fa quote e potlakileng, ea tlholisano e tsamaellanang le litlhoko tsa hau.
Lipotso tsa FR4 PCB
1. Mocheso o phahameng oa ho sebetsa le moeli oa tikoloho bakeng sa FR4 PCBs ke ofe?
Lisebelisoa tse tloaelehileng tsa FR4 PCB hangata li tšehetsa mocheso o phahameng oa ho sebetsa pakeng tsa 130 ° C le 150 ° C (Tg range), ka liboto tse phahameng tsa Tg FR4 tse fihlang ho 170-180 ° C. Leha FR4 e fana ka khanyetso e ntle ea mongobo, ho pepesetsoa nako e telele tikolohong e feteletseng ho ka ama botsitso ba sebopeho. Bakeng sa lits'ebetso tsa likoloi, sefofane, kapa lisebelisoa tsa elektroniki tsa kantle, ho khothaletsoa ho khetha limaraka tse phahameng tsa Tg kapa tse khethehileng tsa FR4 ho netefatsa ho tšoarella tlas'a maemo a mocheso le mongobo.
2. Na FR4 e loketse lits'ebetso tsa PCB tse lebelo le holimo?
FR4 e sebetsa ka mokhoa o tšepahalang bakeng sa lipotoloho tsa maqhubu a tlase ho isa bohareng empa e bonts'a mefokolo e kaholimo ho 8-10 GHz, moo tahlehelo ea lets'oao le phetoho e sa fetoheng ea dielectric li amang ts'ebetso. Bakeng sa li-PCB tsa maqhubu a phahameng, baqapi hangata ba nahana ka lisebelisoa tse ling tse kang li-laminate tse khethehileng tsa laminate tse nang le tahlehelo e tlase, PTFE, kapa li-substrate tsa ceramic, tse fanang ka botšepehi bo betere ba lets'oao le tahlehelo e tlase ea dielectric ha e bapisoa le FR4 e tloaelehileng. Leha ho le joalo, FR4 e ntse e ka sebelisoa ho li-PCB tsa dijithale tse lebelo le phahameng haeba taolo e nepahetseng ea impedance le moralo oa stack-up li sebelisoa.
3. Ke lokela ho khetha botenya le kereiti e nepahetseng ea FR4 PCB joang bakeng sa kopo ea ka?
Khetho ea botenya ba FR4 PCB e ipapisitse le matla a mochini, ts'ebetso ea motlakase, le litlhoko tsa kopano. Likhetho tse tloaelehileng li tloha ho 0.2 mm ho ea ho 3.2 mm, le liboto tsa 1.6 mm FR4 e le maemo a indasteri. Bakeng sa ho feto-fetoha ha maemo, lisebelisoa tse bobebe, kapa lisebelisoa tsa elektroniki tse kopaneng, liboto tse tšesaane li ka ratoa, athe lisebelisoa tsa elektroniki tsa motlakase le li-PCB tse ngata hangata li hloka li-laminate tsa FR4 tse teteaneng. Ho khetha pakeng tsa FR4 e tloaelehileng, high-Tg FR4, kapa halogen-free FR4 e lokela ho ipapisa le ho hanyetsa mocheso, ho lumellana le polokeho, le litlhoko tsa tikoloho.
4. Ho na le phapang efe pakeng tsa Paterone Plating le Negative Electroplating tlhahisong ea FR4 PCB?
Tlhahisong ea FR4 PCB, Pattern Plating hangata e sebelisoa bakeng sa ho plating ka lesoba le li-circuitry tsa mehala e metle, moo koporo e beoang ka kotloloho libakeng tse nang le mohlala. Ka lehlakoreng le leng, Negative Electroplating e kenyelletsa ho roala libaka tse se nang mohlala ka ho hanyetsa pele ho electroplating, ho fana ka taolo e ntle bakeng sa li-PCB tse phahameng haholo. Qeto e ipapisitse le ho rarahana ha moralo, litlhoko tse tlase tsa mohlala / sebaka, le katleho ea litšenyehelo. Ho buisana le moetsi oa PCB ho thusa ho fumana mokhoa o motle oa projeke ea hau.
5. Na li-PCB tsa FR4 li lumellana le maemo a tikoloho le polokeho?
Ee, li-PCB tsa FR4 li ka kopana le litekanyetso tsa ho latela RoHS, REACH le halogen-free. Baetsi ba bangata ba fana ka li-laminate tsa FR4 tse se nang halogen, tse fokotsang tlhahiso e chefo nakong ea ho lahla. Standard FR4 e se e ntse e le UL94 V-0 e thibelang malakabe, e netefatsang polokeho ho lisebelisoa tsa motlakase tsa bareki, li-PCB tsa likoloi le lisebelisoa tsa bongaka. Ha ts'ebetso ea tikoloho e le ntho e tlang pele, ho khetha lisebelisoa tsa FR4 PCB tse sebetsang hantle ho thusa ho leka-lekanya ts'ebetso, ho latela melao le boikarabello ba bophelo ba sehlahisoa.
Nka Qotso e Potlakileng
Fumana hore na boitseanape ba rona bo ka u thusa joang ka projeke ea hau e latelang ea PCB.