Tsebo ea motheo ea SMT
1. Surface Mount Technology-SMT (Surface Mount Technology)
SMT ke eng:
Ka kakaretso e bolela ts'ebeliso ea lisebelisoa tsa kopano tse ikemetseng ho hokela ka kotloloho le lisebelisoa tsa solder chip le lisebelisoa / lisebelisoa tse kopaneng tse se nang lead kapa tse khutšoane (tse bitsoang SMC/SMD, hangata li bitsoa likarolo tsa chip) holim'a boto ea potoloho e hatisitsoeng. (PCB) Kapa theknoloji e 'ngoe ea kopano ea elektronike sebakeng se boletsoeng holim'a substrate, e tsejoang hape e le thekenoloji ea holim'a metsi kapa theknoloji ea holim'a metsi, e bitsoang SMT (Surface Mount Technology).
SMT (Surface Mount Technology) ke theknoloji e hlahang indastering ea indasteri ea elektroniki.Tsoelo-pele ea eona le tsoelo-pele e potlakileng ke phetoho indastering ea likopano tsa elektronike.E tsejoa e le "Rising Star" ea indasteri ea lisebelisoa tsa elektroniki.E etsa hore kopano ea elektronike e be le ho feta Ha e potlakile ebile e le bonolo, ho nkeloa sebaka ha lihlahisoa tse fapa-fapaneng tsa elektroniki ka potlako le ka potlako, ho phahamisa boemo ba ho kopanya, le theko e tlaase, li kentse letsoho le leholo ntlafatsong e potlakileng ea IT ( Information Technology) indasteri.
Theknoloji ea Surface Mount e nts'etsopele ho tsoa ho theknoloji ea tlhahiso ea li-circuits tsa likarolo.Ho tloha ka 1957 ho fihlela joale, nts'etsopele ea SMT e fetile mekhahlelo e meraro:
Mokhahlelo oa pele (1970-1975): Sepheo se seholo sa tekheniki ke ho sebelisa likaroloana tsa chip tse nyane tlhahisong le tlhahisong ea motlakase o nyalisitsoeng (o bitsoang li-circuits tsa lifilimi tse teteaneng Chaena).Ho latela pono ena, SMT e bohlokoa haholo bakeng sa kopanyo Ts'ebetso ea tlhahiso le nts'etsopele ea theknoloji ea lipotoloho li entse tlatsetso e kholo;ka nako e ts'oanang, SMT e se e qalile ho sebelisoa haholo lihlahisoa tsa sechaba tse kang lioache tsa elektronike tsa quartz le li-calculator tsa elektronike.
Mokhahlelo oa bobeli (1976-1985): ho khothaletsa miniaturization e potlakileng le mefuta e mengata ea ts'ebetso ea lihlahisoa tsa elektronike, 'me e qalile ho sebelisoa haholo lihlahisoa tse kang lik'hamera tsa video, li-radio tsa li-headset le lik'hamera tsa elektronike;ka nako e ts'oanang, palo e kholo ea lisebelisoa tse ikemetseng bakeng sa kopano ea holim'a metsi e ile ea ntlafatsoa Ka mor'a tsoelo-pele, theknoloji ea ho kenya le lisebelisoa tsa ts'ehetso ea likarolo tsa chip le tsona li se li hōlile, li rala motheo oa tsoelo-pele e kholo ea SMT.
Mohato oa boraro (1986-hona joale): Sepheo se seholo ke ho fokotsa litšenyehelo le ho tsoela pele ho ntlafatsa tekanyo ea ts'ebetso-theko ea lihlahisoa tsa elektronike.Ka kholo ea theknoloji ea SMT le ntlafatso ea ts'episo ea ts'ebetso, lihlahisoa tsa elektronike tse sebelisoang sesoleng le lichelete (lisebelisoa tsa lisebelisoa tsa lisebelisoa tsa k'homphieutha tsa likoloi) li tsoetse pele ka potlako.Ka nako e ts'oanang, palo e kholo ea lisebelisoa tsa kopano e ikemetseng le mekhoa ea ts'ebetso e hlahile ho etsa likarolo tsa chip Ho hōla ka potlako ha tšebeliso ea li-PCB ho potlakisitse ho theoha ha theko eohle ea lihlahisoa tsa elektronike.
2. Likarolo tsa SMT:
① Boima bo phahameng ba kopano, boholo bo nyane le boima bo bobebe ba lihlahisoa tsa elektroniki.Bophahamo le boima ba likarolo tsa SMD li ka ba 1/10 feela ea likarolo tsa plug-in tsa setso.Ka kakaretso, ka mor'a hore SMT e amoheloe, boholo ba lihlahisoa tsa elektronike bo fokotsehile ka 40% ~ 60% 'me boima bo fokotsehile ka 60%.~80%.
②Botšepehi bo phahameng, bokhoni bo matla ba ho thibela ho sisinyeha, le sekhahla se tlase sa bofokoli ba manonyeletso a solder.
③ Litšobotsi tse ntle tsa maqhubu a phahameng, ho fokotsa tšitiso ea maqhubu a motlakase le radio.
④ Ho bonolo ho elelloa boits'oaro le ho ntlafatsa katleho ea tlhahiso.
⑤ Boloka lisebelisoa, matla, lisebelisoa, basebetsi, nako, joalo-joalo.
3. Khethollo ea mekhoa ea ho phahamisa holim'a metsi: Ho ea ka mekhoa e fapaneng ea SMT, SMT e arotsoe ka mokhoa oa ho fana (wave soldering) le mokhoa oa solder paste (reflow soldering).
Liphapang tse kholo tsa bona ke:
① Ts'ebetso pele ho patch e fapane.Ea pele e sebelisa patch glue 'me ea morao-rao e sebelisa solder paste.
② Ts'ebetso ea kamora ho patch e fapane.Ea pele e feta ka ontong ea reflow ho phekola sekhomaretsi le ho beha likarolo ho boto ea PCB.Ho hlokahala soldering ea wave;ea ho qetela e feta ka ontong ea reflow bakeng sa solder.
4. Ho ea ka ts'ebetso ea SMT, e ka aroloa ka mefuta e latelang: mokhoa oa ho kenya ka mahlakoreng a le mong, mokhoa oa ho kenya mahlakoreng a mabeli, mokhoa oa ho paka o kopantsoeng ka mahlakoreng a mabeli.
① Kopanya ka ho sebelisa likarolo tse kaholimo feela
A. Kopano e lehlakoreng le le leng e kenngoeng holim'a metsi feela (ts'ebetso ea ho kenya ka lehlakore le le leng) Ts'ebetso: pente ea solder e hatisang skrineng → lisebelisoa tse kenyang → reflow soldering
B. Kopano e nang le mahlakore a mabeli e kenyang holim'a metsi feela (mokhoa oa ho kenya ka mahlakoreng a mabeli) Ts'ebetso: peista ea solder e hatisang skrineng → likarolo tse kenyang → reflow soldering → lehlakore le ka morao → letlapa le hatisang skrineng → likarolo tse kenyang → reflow soldering
② Kopana le likarolo tse holim'a holim'a thaba ka lehlakoreng le leng le motsoako oa lisebelisoa tsa holim'a holim'a metsi le likaroloana tse nang le li-perforated ka lehlakoreng le leng (mokhoa o kopantsoeng oa mahlakoreng a mabeli)
Mokhoa oa 1: Sekhahla se hatisang skrineng (lehlakoreng le ka holimo) → likarolo tse kenyang → ho roala metsi → lehlakoreng le ka morao → ho fana (ka tlaase) → lisebelisoa tse kenyang → mocheso o phahameng oa ho folisa → lehlakoreng le ka morao → likarolo tse kentsoeng ka letsoho
Mokhoa oa 2: Sekoahelo sa mochini o hatisang (lehlakoreng le ka holimo) → likarolo tse kenyang → ho kopanya hape → plug-in ea mochini (lehlakoreng le ka holimo) → lehlakoreng le ka morao → ho fana (lehlakoreng le ka tlaase) → sekoahelo → ho folisa mocheso o phahameng
③Bokaholimo bo sebelisa likarolo tse nang le lipekere mme bokaholimo bo tlase bo sebelisa likarolo tse kaholimo (mokhoa o kopaneng oa mahlakore a mabeli)
Mokhoa oa 1: Ho fana → ho kenya likarolo → mocheso o phahameng oa ho folisa → lehlakoreng le ka morao → likarolo tse kenyang letsoho → solder ea wave
Mokhoa oa 2: plug-in ea mochini → lehlakoreng le ka morao → ho fana → patch → pholiso ea mocheso o phahameng → solder ea wave
Mokhoa o khethehileng
1. Ts'ebetso ea ho kopanya ka lehlakoreng le le leng Kenya sekontiri sa solder ho kenya lisebelisoa le ho etsa solder.
2. Mahlakore a mabeli a mahlakoreng a mabeli a tsamaiso ea ho kopanya A lehlakore le sebelisa peista ea solder ho mounting components le reflow soldering flap B side e sebelisa solder peista ho mount components le reflow soldering.
3. Lehlakore le le leng le kopantsoeng kopano (SMD le THC li ka lehlakoreng le le leng) Lehlakoreng le sebelisa solder peista ho mount SMD reflow soldering A lehlakoreng le kenang THC B lehlakoreng le leng le le leng.
4. Kopano e tsoakiloeng ka mahlakoreng a le mong (SMD le THC li ka mahlakoreng a mabeli a PCB) Etsa kopo ea sekhomaretsi sa SMD ka lehlakoreng la B ho kenya sekhomaretsi sa SMD se nang le sekhomaretsi A lehlakoreng kenya THC B lehlakoreng le leng la solder.
5. Ho kenya letsoho ka mahlakoreng a mabeli (THC e ka lehlakoreng la A, mahlakoreng ka bobeli A le B a na le SMD) Kenya solder pente ho lehlakoreng la A ho kenya SMD ebe u phalla ka lehlakoreng le leng la B lehlakoreng sebelisa SMD glue ho kenya SMD glue curing flip board A. lehlakoreng ho kenya THC B Surface wave soldering
6. Mahlakore a mabeli a kopantseng motsoako (SMD le THC mahlakoreng ka bobeli a A le B) A lehlakoreng sebelisa solder peista ho mount SMD reflow soldering flap B lehlakoreng etsa kopo SMD sekhomaretsi mounting SMD sekhomaretsi folisa flap A lehlakoreng kenya THC B lehlakoreng leqhubu soldering B- tjheseletsa lehlakoreng ka letsoho
Tse hlano.Tsebo ea karolo ea SMT
Mefuta e sebelisoang hangata ea likarolo tsa SMT:
1. Li-resistors tsa holim'a marulelo le li-potentiometers: li-rectangular chip resistors, li-resistors tse tsitsitseng tsa cylindrical, marang-rang a manyenyane a tsitsitseng, li-chip potentiometers.
2. Surface mount capacitor: multilayer chip ceramic capacitor, tantalum electrolytic capacitor, aluminium electrolytic capacitor, mica capacitor
3. Li-inductors tse holim'a holim'a metsi: li-inductors tsa terata, li-inductors tsa multilayer chip.
4. Lifaha tsa Magnetic: Chip Bead, Multilayer Chip Bead
5. Likarolo tse ling tsa chip: chip multilayer varistor, chip thermistor, chip surface wave filter, chip multilayer LC filter, chip multilayer delay line
6. Lisebelisoa tsa semiconductor tse holim'a holim'a metsi: li-diode, li-transistors tse nyenyane tse pakiloeng, li-circuits tse nyenyane tse kentsoeng SOP, li-circuits tse kopantsoeng tsa polasetiki PLCC, quad flat package QFP, ceramic chip carrier, heke array spherical package BGA, CSP (Chip Scale Package)
NeoDen e fana ka tharollo ea mohala oa kopano ea SMT e felletseng, ho kenyeletsoa onto ea SMT reflow, mochini o hlabollang, mochini o khethang le oa ho beha, mochini oa khatiso oa solder, PCB loader, PCB unloader, chip mounter, mochini oa SMT AOI, mochini oa SMT SPI, mochini oa SMT X-Ray, Lisebelisoa tsa mohala oa kopano ea SMT, lisebelisoa tsa tlhahiso ea PCB Lisebelisoa tsa SMT, joalo-joalo mechini efe kapa efe ea mofuta oa SMT eo u ka e hlokang, ka kopo ikopanye le rona bakeng sa tlhaiso-leseling e batsi:
Nako ea poso: Jul-23-2020