LED PCB Design Tips: Mekhoa e Molemo ka ho Fetisisa bakeng sa Baetsi

LED ea PCB

Moralo oa LED PCB o tlameha ho leka-lekanya tlhahiso ea leseli, phetisetso ea mocheso, khetho ea thepa, boima ba koporo, maske ea solder, qetello ea bokaholimo, le ts'epo ea kopano ho e-na le ho tšoara boto e le sesebelisoa se bonolo sa ho tsamaisa li-LED. Bakeng sa li-OEM tsa mabone le lihlopha tsa theko, Highleap Electronics e hlahloba litsela tsa mocheso, likhetho tsa thepa ea aluminium kapa FR-4, ho kenya liphanele, le liteko tsa tlhahiso e le hore PCB ea LED e felileng e ka etsoa ka mokhoa oa prototype le bophahamo; likhetho tse amanang li koahetsoe melaong ea moralo oa aluminium LED PCB le qetello ea bokaholimo ba MCPCB.

Bohlokoa ba li-PCB tsa LED

Li-PCB tsa LED li sebetsa e le mokokotlo oa lisebelisoa tsa mabone a LED, e leng se etsang hore e be karolo ea lisebelisoa tse ngata tsa mabone. Tšebeliso ea bona e namela libakeng tse fapaneng, ho kenyelletsa le lisebelisoa tsa elektroniki tsa bareki, mabone a likoloi, mabone a meralo, lipontšo le mabone a indasteri. Karolo e latelang e hlalosa mabaka a utloahalang a ho kenyelletsa li-PCB tsa LED meralong.

E bobebe ebile e nyane : Li-LED li tsebahala ka boholo ba tsona bo bonyenyane le boima bo tlase, e leng se etsang hore li be ntle bakeng sa lits'ebetso moo sebaka se fokolang. Li fumana matlo lisebelisoa tse kang li-smartphone, lik'homphieutha, mabone a likoloi le matšoao a sephethephethe.

Bokgoni ba Matla : Mabone a LED ke bahloli ba bokgoni ba ho boloka matla, a kgonang ho fokotsa tshebediso ya motlakase ka ho fihla ho 80%. Tšobotsi ena e etsa hore e be kgetho e kgethwang bakeng sa mabone a matlo, moo ho boloka matla ho leng bohlokwa haholo.

Ho tšoarella : Li-PCB tsa LED tsa boleng bo holimo li etselitsoe ho hanela mongobo le lerōle, e leng se etsang hore li lokele libaka tsa indasteri moo tšireletso khahlanong le likarolo tsena e leng ea bohlokoa.

Nako e Atolositsoeng ea Bophelo : Li-LED li na le nako e tsotehang ea bophelo, e fetang makhetlo a 25 ho feta mehloli ea leseli ea setso. Nako ena e telele e entse hore li ratoe ke bahlahisi ba likoloi le lisebelisoa.

Botsoalle ba Tikoloho : Ho fapana le mabone a setso, mabone a LED ha a na mercury, a baka tšenyo e nyane tikolohong. A ka sebelisoa hape habonolo ntle le mekhoa e rarahaneng ea ho lahla, e leng se fokotsang tšilafalo ea tikoloho haholo.

Bokgoni bo Phahameng : Di-LED di fetola matla a motlakase hore e be lesedi haholoholo, di fokotsa tshenyo jwalo ka mocheso. Ka lehlakoreng le leng, mabone a tlwaelehileng a qhala matla a mangata jwalo ka mocheso, e leng se fellang ka ditjeo tse hodimo tsa motlakase.

Mathata ho Moralo oa LED PCB

Le ha li-PCB tsa LED li fana ka melemo e mengata, li fana ka liphephetso tse ikhethang tseo baqapi ba tlamehang ho sebetsana le tsona ho holisa bokhoni ba bona. Liphephetso tsena li ipapisitse le phello ea mocheso tšebetsong ea LED:

Mocheso : Li-LED li hlahisa mocheso nakong ea ts'ebetso, 'me mocheso o feteletseng o ka beha bophelo ba tsona kotsing le ho fetola' mala oa khanya e ntšang. Tsamaiso e nepahetseng ea mocheso ea hlokahala ho fokotsa litlamorao tsena.

Nako ea Bophelo : Mocheso o phahameng o ka fokotsa nako ea bophelo ea li-LED, ho fapana le botumo ba tsona ba ho tšoarella.

Ho Tsitsisa 'Mala : Li-LED li sebelisoa ho fana ka mebala e itseng lits'ebetsong tse fapaneng tsa LED. Ho feto-fetoha ha mocheso ho ka baka liphetoho ponahalong ea 'mala, e leng se hlokang taolo e sebetsang ea mocheso.

Mehopolo ea Moralo bakeng sa li-PCB tsa LED

Ho theha li-PCB tsa LED ho hloka hore ho nahanoe ka hloko lintlha tse 'maloa tsa bohlokoa ho netefatsa ts'ebetso e nepahetseng. Mehopolo ena e kenyelletsa ho beoa ha likarolo, khetho ea thepa, taolo ea mocheso, ho lata le ho qeta ka holim'a metsi, tseo kaofela li kenyang letsoho molemong oa boto ea ho ts'ehetsa ts'ebetso ea LED.

1. Ho Bea Karolo:
   • Ho beha likarolo tse nahannoeng ho bohlokoa molemong oa moralo oa LED PCB. Ho beha leano ho fokotsa litšenyehelo tsa tlhahiso, ho ntlafatsa ho kopanya habonolo, le ho netefatsa tlhahiso ea boleng bo holimo.
   • Ntle le li-LED, likarolo tse ling tse kang lihokelo, likarolo tse sebetsang le tse sa sebetseng, li-resistors, le li-thermistor li tlameha ho beoa ho PCB. Karohano e nepahetseng lipakeng tsa likarolo ke ea bohlokoa ho thibela liketsahalo tsa overvoltage. Ka hona, ha ho etsoa LED PCB, re lokela ho nahana ka creepage (e leng sebaka se khutsoanyane pakeng tsa likaroloana) le tumello (sebaka se pakeng tsa likarolo tse lekantsoeng moeeng).
2. Lisebelisoa tsa PCB:
   • Li-PCB tsa LED hangata li sebelisa lisebelisoa tse peli: FR4 le substrate ea tšepe e kentsoeng (IMS). Thepa e 'ngoe le e' ngoe e fana ka melemo le likotsi tse ikhethang, e amang litšenyehelo le ts'ebetso ea mocheso.
   • Khetho ea thepa e tlameha ho thusa ho qhala mocheso ha o ntse o fana ka insulation ea motlakase bakeng sa li-conductor le ho tšehetsa likhokahano lipakeng tsa likarolo tsa motho ka mong. Hangata Aluminium e khethoa e le lera la tšepe ho li-PCB tsa LED tse thehiloeng ho IMS bakeng sa thepa ea eona e phahameng ea ho felisa mocheso.
3. Taolo ea Thermal:
   • Tsamaiso e nepahetseng ea mocheso e bohlokoa molemong oa moralo oa LED PCB. Mocheso o ka ama ts'ebetso ea LED hampe le nako ea bophelo.
   • Mekhoa e kang li-cores tsa aluminium, li-vias tsa mocheso, le licheso tsa mocheso li kenngoa ts'ebetsong ho felisa mocheso o hlahisoang ke li-conductor le likaroloana. Ho beha likarolo ka hloko le tlhophiso ea LED ho netefatsa hore mocheso o ajoa bakeng sa ts'epo e nepahetseng.
4. Ho latela:
   • Ho latedisa ho kenyelletsa ho thehwa ha ditsela tsa mehala ya motlakase ho PCB. Ho latela ka hloko ho thibela lipotoloho tse bulehileng, li-circuits tse khutšoane le crosstalk, ho netefatsa li-PCB tsa boleng bo holimo le tse tšepahalang.
   • Tsela e nepahetseng ea ho latela litsela e laola kabo ea hona joale le ho thibela ho futhumala ho feteletseng. Lintlha tse amehang li kenyelletsa bophara ba pina, sebaka sa ho lata, le ho beoa ha masoba a ntseng a hola.
5. Surface Finishes:
   • Lisebelisoa tsa bokaholimo li sireletsa koporo e pepesitsoeng mme li fana ka sebaka se rekisoang bakeng sa sehokelo sa likarolo. Mehaho e tloaelehileng ea holim'a metsi e kenyelletsa HASL (Hot Air Solder Leveling), OSP (Organic Solderability Preservative), electrolytic nickel/hauta, le tin/silevera e qoelisoang.
   • Ho khetha sebaka se nepahetseng sa bokaholimo ho kenyelletsa ho lekola melemo le mathata a khetho ka 'ngoe, ho nahanoa ka litlhoko tsa PCB, le ho latela lithibelo tsa tekanyetso.

Mefuta ea Liqapi tsa LED PCB

Li-PCB tsa LED li tla ka meralo e fapaneng, e 'ngoe le e' ngoe e lumellana le litlhoko tse ikhethang tsa ts'ebeliso:

1. Moralo oa PCB ea Lehlakore le le Leng:
   • Li-PCB tsa LED tse nang le lehlakore le le leng li na le lera le le leng feela la conductive. Li loketse bakeng sa meralo e fokolang haholo, e fanang ka bonolo, ho boloka litšenyehelo, le ho lokisoa habonolo. Li loketse hantle bakeng sa litaelo tsa molumo o phahameng.
2. Moralo oa PCB ea Mahlakore a mabeli:
   • Li-PCB tsa LED tse mahlakoreng a mabeli li na le mesaletsa ea potoloho ka mahlakoreng ka bobeli. Li fana ka meralo e bonolo haholoanyane, litšenyehelo tse tlase, le phallo e matla ea mocheso. Li-PCB tsena li ka amohela meralo e rarahaneng ea potoloho le ho sebelisa Ka Hole Technology (THT) kapa Surface Mount Technology (SMT) bakeng sa kopano ea likarolo.
3. Moralo oa Multilayer LED PCB:
   • Multilayer LED PCBs e na le likarolo tse fetang tse peli tsa liboto tsa potoloho tse hatisitsoeng. Ba ipabola ka har'a lisebelisoa tsa mabone a LED, ba fana ka melemo e joalo ka boholo ba komporo, boima bo phahameng ba kopano, ho tšoarella, ho tenyetseha, le lintlha tse matla tsa khokahano e le 'ngoe.

Mekhoa ea ho Khetha Mofani oa Tšebeletso ea Moralo oa LED PCB

Ho khetha mofani oa litšebeletso tsa moralo oa LED PCB ho bohlokoa bakeng sa ho fumana liphetho tsa boleng bo holimo. Nahana ka lintlha tse latelang ha u etsa khetho:

1. Thomello ka Nako:
   • Ho tsamaisa thepa ka nako ho bohlokoa ho qoba mathata a khoebo. Linako tse etellang pele kapele li etsa hore sehlahisoa se hlahisoe kapele, se u thusa ho lula u le tlholisano.
2. Tsebo:
   • Batla bahlahisi ba nang le litsebo tsa moralo oa LED PCB. Ba ka fana ka lintlha tsa bohlokoa ho fokotsa litšenyehelo ntle le ho senya boleng.
3. Tsebo:
   • Etsa bonnete ba hore sehlopha sa meralo sa mofani oa litšebeletso se na le tsebo ho LED ea PCB software ea moralo le mekhoa.
4. Tšehetso ea bareki:
   • Khetha moetsi ea tsebahalang ka litšebeletso tse ntle tsa bareki le tšehetso ea tekheniki. Sehlopha sa bona se arabelang se lokela ho fumaneha habonolo ho araba lipotso le ho fana ka tataiso.

Mokhoa oa Tlhahiso le Teko

Taolo e matla ea boleng le ts'ebetso ea tlhahlobo e bohlokoa bakeng sa ho netefatsa tlhahiso e tšepahalang le kopano ea li-PCB. Tlhokomelo e haufi ea liparamente tsa bohlokoa ke ea bohlokoa ho netefatsa hore liboto li kopana le litlhaloso.

Bakeng sa li-LED tsa theknoloji ea holim'a metsi (SMT), sebelisa solder paste e etselitsoeng ka ho khetheha likarolo tse sa utloeng mocheso. Ho sebelisa nitrogen reflow ho ka thusa ho thibela oxidation. Hlahloba ka ho feletseng manonyeletso le li-fillets ka mor'a ho phalla hape, 'me u nahane ka ho sebelisa tlhahlobo ea X-ray ho bona liphoso tse patehileng.

Ha o sebetsa ka li-LED tsa lesoba, matlafatsa matla a mochini ka ho kenyelletsa masoba a mangata a solder le/kapa likurufu. Tšebeliso ea flux e ka thusa ho thibela marokho a solder pakeng tsa likhokahano. Etsa bonnete ba ho hloekisa ka ho feletseng ka mor'a ho solder.

Etsa tlhahlobo ea optical e iketsang ea 100% (AOI) kamora kopano ea SMT ho fumana liphoso tse tloaelehileng tse kang likarolo tse sieo kapa tse sa tsamaellaneng hantle. Teko ea ka hare ho potoloho (ICT) e lokela ho etsoa ho netefatsa khokahano ea netweke le ho lemoha lipotoloho tse khutšoane.

Etsa tlhahlobo ea potoloho ho netefatsa lits'oants'o tse nepahetseng tsa hajoale le ho netefatsa ts'ebetso ea LED. Lisebelisoa tsa motlakase tse reriloeng li thusa liteko tsa morao-rao le liteko tsa ho palama libaesekele.

Nakong ea liteko tse chesang ka mejaro e mengata ea hona joale, hlokomela li-voltages tsa LED le mocheso oa mateano. Lik'hamera tsa litšoantšo tse futhumetseng li ka sebelisoa ho tseba libaka tse chesang. Tlhahlobo ea ho chesoa e ka potlakisa ho tsebahatsa ho hloleha ha likarolo tsa pele.

Teko ea taolo ea boleng e lokela ho kenyelletsa metrics joalo ka flux e khanyang, chromaticity, sebopeho sa LED, le matšoao. Ho feta moo, ka pono hlahloba mokhoa oa ho bonesa hore na o lumellana joang.

Ka ho kenya ts'ebetsong liprothokholo tsa tlhahlobo e matla nakong eohle ea tlhahiso ea molumo, bahlahisi ba ka lula ba fana ka liboto tsa boleng bo holimo tsa LED tse tšepahalang le tse sebetsang maemong a holimo.

Khetha Highleap Electronic e le Mofani oa Ts'ebeletso ea Moralo oa hau oa LED PCB

Ho Highleap Electronic , re utloisisa mathata a moralo oa li-PCB tsa LED. Baenjiniere ba rona ba nang le boiphihlelo ba sebelisa software ea sejoale-joale ea CAD ho etsa lipotoloho tsa LED ka li-PCB tse le 'ngoe, tse peli, kapa tse nang le mekhahlelo e mengata. Re fana ka litharollo tsa boto ea potoloho e ikhethileng tse etselitsoeng kopo ea hau le litlhoko tsa hau. Ho tloha moralo oa pele le prototyping ho isa kopanong le tlhahisong, re tsamaea le uena ts'ebetsong eohle. Ikopanye le rona kajeno ho sebelisa bokhoni ba rona ba moralo oa PCB, tlhahiso le kopano.

fihlela qeto e

Kamohelo e atileng ea li-PCB tsa LED e fetotse lefats'e la lisebelisoa tsa elektroniki. Boima ba tsona bo bobebe, bo baballang matla, 'me bo tšoarella nako e telele bo etsa hore e be tse loketseng lits'ebetso tse ngata. Leha ho le joalo, baqapi le bahlahisi ba tlameha ho shebana le menahano e fapaneng ea moralo, ho kenyelletsa ho beoa ha likarolo, khetho ea thepa, taolo ea mocheso, ho lata le ho qeta bokaholimo, ho sebelisa ka botlalo bokhoni ba li-PCB tsa LED. Ka ho sebetsana le lintlha tsena tsa bohlokoa, ba ka etsa lihlahisoa tse ncha le tse tšepahalang tse khantšang bophelo ba rona le ho kenya letsoho bokamosong bo tsitsitseng.