SMT poto masani
1. Laupapa Mauga Tekonolosi-SMT (Surface Mount Technology)
O le a le SMT:
E masani lava ona faasino i le faʻaogaina o masini faʻapipiʻi faʻapipiʻi e faʻapipiʻi saʻo ma faʻapipiʻi ituaiga chip ma faʻaitiitiga taʻitaʻia poʻo pupuʻu taʻitaʻi faʻapotopotoga faʻapotopotoga vaega / masini (faʻaigoaina o le SMC/SMD, e masani ona taʻua o vaega chip) i luga o le laupapa matagaluega lolomi. (PCB) Poʻo isi tekinolosi faʻapotopotoga faʻaeletoroni i luga o le tulaga faʻapitoa i luga o le mea faʻapipiʻi, e taʻua foi o tekonolosi luga o luga poʻo luga ole mauga tekonolosi, e taʻua o le SMT (Surface Mount Technology).
SMT (Surface Mount Technology) ose fa'atekonolosi fa'atekonolosi o lo'o fa'atupula'ia i le alamanuia fa'aeletonika.O lona tula'i mai ma le televave o le atina'e o se suiga i le pisinisi fa'apotopotoga fa'aeletonika.Ua lauiloa o le "Rising Star" o le pisinisi faaeletonika.E faʻateleina faʻatasi ai le faʻapotopotoga faʻaeletoroni O le vave ma le faigofie, o le vave ma le vave o le suia o mea faʻaeletoroni eseese, o le maualuga o le tuʻufaʻatasia, ma le taugofie o le tau, ua faia ai se sao tele i le atinaʻeina vave o le IT ( Fa'amatalaga Tekonolosi) alamanuia.
Fa'atekonolosi fa'apipi'i i luga o lo'o atia'e mai le fa'atekonolosi gaosiga o vaega ta'amilosaga.Mai le 1957 e oʻo mai i le taimi nei, o le atinaʻeina o le SMT e tolu vaega:
Le laasaga muamua (1970-1975): O le sini autu faʻapitoa o le faʻaaogaina o vaega puʻupuʻu laiti i le gaosiga ma le gaosiga o le eletise eletise (e taʻua o ata tifaga mafiafia i Saina).Mai lenei vaaiga, e taua tele le SMT mo le tuʻufaʻatasia O le gaosiga o gaosiga ma le atinaʻeina o tekonolosi o taʻaloga ua faia ai sao taua;i le taimi lava e tasi, ua amata ona faʻaaogaina lautele le SMT i oloa faʻapitoa e pei o quartz electronic watches ma calculators eletise.
O le laasaga lona lua (1976-1985): ia faʻalauiloaina le faʻavaveina o le miniaturization ma le tele-functionalization o oloa faʻaeletoroni, ma amata ona faʻaaogaina lautele i oloa e pei o mea pueata vitio, leitio ulu ma mea puʻe eletise;i le taimi lava e tasi, o se numera tele o masini faʻapitoa mo faʻasalalauga i luga na faʻatupuina Ina ua maeʻa le atinaʻe, o le faʻapipiʻiina o tekonolosi ma mea lagolago o vaega vaʻa ua matutua foi, faʻavaeina le faavae mo le atinaʻeina tele o le SMT.
O le vaega lona tolu (1986-i le taimi nei): O le sini autu o le faʻaitiitia o tau ma faʻaleleia atili le faʻatinoga o tau o oloa faʻaeletoroni.Faatasi ai ma le matua o le tekinolosi SMT ma le faʻaleleia atili o le faʻatuatuaina o le faʻagasologa, o oloa faʻaeletoroni faʻaaogaina i le militeri ma tupe teufaafaigaluega (taavale komepiuta fesoʻotaʻiga masini fale gaosi oloa) ua vave ona atiaʻe.I le taimi lava e tasi, o se numera tele o masini faʻapipiʻi faʻapipiʻi ma auala faʻagasologa ua faʻaalia e fai ai vaega vaʻa O le faʻavavevaveina o le faʻaogaina o PCB ua faʻavaveina ai le paʻu o le tau atoa o oloa eletise.
2. Fa'ailoga o le SMT:
①O le maualuga o le faʻapotopotoga, laʻititi laʻititi ma le mamafa mama o mea faʻaeletoroni.O le voluma ma le mamafa o vaega SMD e na'o le 1/10 o vaega fa'apipi'i masani.E masani lava, pe a uma ona faʻaaogaina le SMT, o le tele o oloa faʻaeletoroni e faʻaititia e 40% ~ 60% ma faʻaititia le mamafa e 60%.~80%.
②Fa'atuatuaina maualuga, malosi malosi e tetee atu i le vibration, ma le maualalo o le solder solder speed rate.
③O uiga maualuga maualuga, faʻaitiitia le faʻaogaina o le eletise ma le leitio.
④ E faigofie ona iloa otometi ma faʻaleleia le gaosiga lelei.
⑤Faasao mea, malosi, meafaigaluega, tagata faigaluega, taimi, ma isi.
3. Faavasegaina o luga mauga auala: E tusa ai ma faiga eseese o le SMT, ua vaevaeina SMT i dispensing faagasologa (galu soldering) ma solder faiga faapipii (reflow soldering).
O latou eseesega autu o:
①E ese le faiga a'o le'i fa'apipi'i.O le mea muamua e fa'aaoga le kelu fa'apipi'i ae fa'aaoga e le vaega mulimuli le pa'u solder.
②O le faagasologa pe a uma patching e ese.O le mea muamua e pasi atu i le ogaumu toe faʻafefe e faʻamalolo le kelu ma faapipii vaega i le laupapa PCB.E manaʻomia le faʻapipiʻiina o galu;o le mea mulimuli e ui atu i le ogaumu toe faʻafefe mo le faʻapipiʻiina.
4. E tusa ai ma le faagasologa o le SMT, e mafai ona vaevaeina i ituaiga nei: faʻapipiʻi tasi itu, faiga faʻapipiʻi faʻalua, faʻapipiʻi faʻafefiloi faʻapipiʻi lua.
①Fa'apotopoto fa'aaoga na'o vaega fa'apipi'i luga
A. Fa'apotopotoga tasi itu ma na'o le fa'apipi'iina o luga (fa'asologa o le fa'apipi'iina o itu e tasi) Fa'agasologa: fa'apipi'i fa'apipi'i fa'apipi'i fa'amau → fa'apipi'i vaega → fa'aulu so'o.
B. Fa'apotopotoga fa'alua fa'atasi ma na'o le fa'apipi'iina o luga (faiga fa'apipi'i fa'alua-itu) Fa'agasologa: fa'apipi'i fa'apipi'i fa'apipi'i → fa'apipi'i vaega → fa'apipi'i fa'afou → itu fa'afeagai → fa'apipi'i solder lolomi mata → fa'apipi'i vaega → fa'apipi'i fa'afefe.
②Fa'apipi'i fa'atasi ma vaega fa'amau i luga o le tasi itu ma fa'afefiloi vaega fa'apipi'i i luga ma vaega fa'ama'a i le isi itu (faiga fa'afefiloi fa'alua itu)
Fa'agasologa 1: Fa'apipi'i fa'apipi'i fa'apipi'i (itu pito i luga) → fa'apipi'i vaega → fa'amalo fa'aulu → itu fa'asaga i tua → tu'u (pito pito i lalo) → fa'apipi'i vaega → fa'amalo vevela maualuga → itu fa'afeagai → vaega fa'apipi'i lima → fa'apipi'i galu
Fa'agasologa 2: Fa'apipi'i fa'apipi'i fa'apipi'i (itu pito i luga) → fa'apipi'i vaega → toe fa'amalo so'o → masini fa'apipi'i (itu pito i luga) → itu fa'afeagai → tu'uina atu (itu pito i lalo) → fa'apipi'i → fa'amalologa maualuga → fa'amalo galu
③O le pito i luga o loʻo faʻaogaina vaega faʻapipiʻi ae o le pito i lalo e faʻaogaina ai vaega faʻapipiʻi luga (faiga faʻafefiloi faʻafefiloi lua itu)
Fa'agasologa 1: Tu'u atu → vaega fa'apipi'i → fa'amalologa maualuga o le vevela → itu i tua → vaega fa'apipi'i lima → fa'aulu galu
Fa'agasologa 2: Fa'apipi'i masini → itu i tua → tu'uina atu → fa'apipi'i → fa'amaloloina o le vevela maualuga → fa'aulu galu
Fa'asologa fa'apitoa
1. Fa'asolo le fa'agasologa o fa'apotopotoga i luga e tasi Fa'apipi'i solder i le fa'amauina o vaega ma toe fa'amalo so'o
2. Fa'agasologa fa'atupu fa'aulu fa'alua-itu A fa'aogaina le fa'apipi'i solder i vaega fa'apipi'i ma fa'amalo fa'au'u fa'afefe B itu fa'aoga fa'apipi'i fa'apipi'i i vaega fa'amau ma toe fa'auluina.
3. Fa'apotopotoga fa'afefiloi itu e tasi (SMD ma THC o lo'o i le itu e tasi) O le itu e fa'aogaina ai le pa'u fa'apipi'i i le fa'amauina o le SMD toe fa'afo'i fa'afefe A itu fa'afeso'ota'i THC B fa'afefe galu fa'atasi.
4. Fa'apotopotoga fa'afefiloi e tasi-itu (SMD ma THC o lo'o i itu uma e lua o le PCB) Fa'apipi'i SMD i le itu B e fa'amau ai le SMD fa'apipi'i fa'amalolo fa'amau A itu fa'aofi THC B solder galu.
5. Fa'apipi'i fa'afefiloi fa'alua itu (THC o lo'o i le itu A, o itu uma e lua A ma le B o lo'o i ai le SMD) Fa'apipi'i fa'apipi'i solder i le itu A e fa'amau ai le SMD ona fa'afefe lea o le solder flip board B itu fa'aoga SMD kelu i le fa'apipi'i SMD fa'apipi'i fa'amalo le laupapa A. itu e fa'aofi ai THC B Fa'asalaina galu i luga
6. Fa'apotopotoga fa'afefiloi fa'alua itu (SMD ma THC i itu uma e lua o le A ma le B) O se itu fa'apipi'i solder i le fa'amauina o le SMD toe fa'afo'i fa'afefe fa'amauina B itu fa'aoga SMD kelu fa'apipi'i SMD fa'apipi'i fa'amālōlō fa'alava A itu fa'aofi THC B fa'amalo galu B- uelo lima itu
Lima.SMT vaega malamalama
Ituaiga vaega SMT masani ona fa'aogaina:
1. Fa'asagaga mauga tete'e ma potentiometers: rectangular chip resistors, cylindrical fa'amautu tete'e, laiti feso'ota'iga tetee, potentiometers.
2. Mea fa'apipi'i i luga o le mauga: fa'apipi'i fa'apipi'i masini sima, tantalum capacitors electrolytic, alumini eletise eletise, mica capacitors
3. Inductors luga mauga: inductors va'a-manu'a uaea, inductors va'a tele
4. Lopa maneta: Chip Bead, Multilayer Chip Bead
5. O isi vaega va'a: va'aiga va'ava'ai va'ava'ai va'ava'a, vevela va'a, fa'amama galu i luga o le va'a, fa'amama LC fa'apipi'i va'aiga, laina fa'atuai fa'apipi'i tele.
6. Laupapa mauga semiconductor masini: diodes, tamai outline afifiina transistors, otooto laiti afifiina tuufaatasia circuits SOP, taitai palasitika afifi tuufaatasia li'o PLCC, quad mafolafola afifi QFP, ipu sima ave, faitotoa laina spherical afifi BGA, CSP (Chip Scale Package)
NeoDen saunia se SMT atoa fofo laina, e aofia ai SMT reflow ogaumu, galu soldering masini, piki ma tuu masini, solder faapipii lomitusi, PCB loader, PCB unloader, chip mounter, SMT AOI masini, SMT SPI masini, SMT X-Ray masini, SMT fa'apotopotoga laina meafaigaluega, PCB gaosiga Meafaigaluega SMT vaega fa'apitoa, ma isi ituaiga masini SMT atonu e te mana'omia, fa'amolemole fa'afeso'ota'i mai mo nisi fa'amatalaga:
Taimi meli: Iul-23-2020