SMT aqoonta aasaasiga ah
1. Surface Mount Technology-SMT (Surface Mount Technology)
Waa maxay SMT:
Guud ahaan waxaa loola jeedaa isticmaalka qalabka isku-ururinta tooska ah si toos loogu dhejiyo oo loo iibiyo nooca chip-ka iyo qaybaha isku imaatinka eegada-gaaban ama rasaasta yar-yar (oo loo yaqaan SMC/SMD, oo inta badan loo yaqaan qaybaha chip) dusha sare ee guddiga wareegga daabacan. (PCB) Ama tignoolajiyada kale ee kulanka elegtarooniga ah ee ku yaal booska la cayimay ee dusha sare ee substrate-ka, oo sidoo kale loo yaqaano tignoolajiyada dusha sare ama tignoolajiyada dusha sare, oo loo yaqaan SMT (Surface Mount Technology).
SMT (Surface Mount Technology) waa tignoolajiyada warshadaha soo koraya ee warshadaha elektiroonigga ah.Kor u kacdeeda iyo horumarkeeda degdega ah ayaa ah kacaanka warshadaha isu-ururinta elektiroonigga ah.Waxaa loo yaqaan "Xiddiga soo kacaya" ee warshadaha elektiroonigga ah.Waxay ka dhigaysaa isku-dhafka elektaroonigga ah mid aad iyo aad u badan Sida ugu dhaqsaha badan oo fudud waa, dhaqso iyo dhaqso badan oo beddelka alaabooyinka kala duwan ee elektiroonigga ah, heerka sare ee isdhexgalka, iyo qiimaha jaban, ayaa gacan weyn ka geystay horumarinta degdegga ah ee IT-ga. Tignoolajiyada macluumaadka) warshadaha.
Tignoolajiyada korka dusha sare waxaa laga soo saaray farsamada wax soo saarka ee wareegyada qaybaha.Laga soo bilaabo 1957 ilaa hadda, horumarinta SMT waxay soo martay saddex marxaladood:
Marxaladda koowaad (1970-1975): Hadafka ugu weyn ee farsamada waa in lagu dabaqo qaybaha chip miniaturized ee wax soo saarka iyo soo saarista koronto isku-dhafka ah (oo loo yaqaanno wareegyada filimada dhumucda ee Shiinaha).Marka laga eego dhinacan, SMT waxay aad muhiim ugu tahay isdhexgalka Habka wax soo saarka iyo horumarinta tignoolajiyada ee wareegyada waxay sameeyeen wax ku biirin la taaban karo;Isla mar ahaantaana, SMT waxay bilowday in si weyn loogu isticmaalo alaabta rayidka ah sida saacadaha elektaroonigga ah ee quartz iyo xisaabiyeyaasha elektarooniga ah.
Marxaladda labaad (1976-1985): si kor loogu qaado miniaturization degdeg ah iyo multi-functionalization ee alaabta elektarooniga ah, oo bilaabay in si ballaaran loo isticmaalo in alaabta sida kamaradaha video, raadiyaha headset iyo kamaradaha elektarooniga ah;Isla mar ahaantaana, tiro badan oo qalab otomaatig ah oo loogu talagalay isu-ururinta dusha sare ayaa la sameeyay horumarinta ka dib, tignoolajiyada rakibaadda iyo qalabka taageerada ee qaybaha chip ayaa sidoo kale qaan-gaaray, oo dhidibada u aasaya horumarinta weyn ee SMT.
Marxaladda saddexaad (1986-hadda): Hadafka ugu weyni waa in la dhimo kharashaadka iyo in la sii wanaajiyo saamiga wax-qabadka iyo qiimaha alaabta elektaroonigga ah.Iyada oo qaan-gaarnimada tignoolajiyada SMT iyo hagaajinta isku halaynta nidaamka, alaabada elektiroonigga ah ee loo isticmaalo militariga iyo maalgashiga (qalabka isgaarsiinta kombuyuutarka baabuurta ee qalabka warshadaha) ayaa si degdeg ah u horumaray.Isla mar ahaantaana, tiro badan oo ah qalabka isku-dhafka otomaatiga ah iyo hababka geeddi-socodka ayaa soo baxay si ay u sameeyaan qaybaha jajabka Kobaca degdega ah ee isticmaalka PCB-yada ayaa dardargeliyay hoos u dhaca wadarta qiimaha alaabta elektaroonigga ah.
2. Astaamaha SMT:
① Cufnaanta fadhiga sare, cabbir yar iyo miisaanka fudud ee alaabta elektiroonigga ah.Mugga iyo miisaanka qaybaha SMD waxay ku saabsan yihiin 1/10 oo keliya qaybaha fur-in-dhaqameedka.Guud ahaan, ka dib markii SMT la qaato, mugga alaabta elektiroonigga ah ayaa la dhimay 40% ~ 60% miisaankana waa la dhimay 60%.~80%.
② Kalsooni sare, awood xoog leh oo ka-hortagga gariirka, iyo heerka cilladda wadajirka ah ee alxanka oo hooseeya.
③ Tilmaamaha soo noqnoqda ee wanaagsan, yaraynta korantada iyo faragelinta soo noqnoqda raadiyaha.
④ Way fududahay in la xaqiijiyo iswada oo la wanaajiyo waxtarka wax soo saarka.
⑤ Keydso agabka, tamarta, qalabka, cududda, waqtiga, iwm.
3. Kala soocida hababka buurta dusha sare: Sida laga soo xigtay hababka kala duwan ee SMT, SMT waxa loo qaybiyaa habka qaybinta (mawjada alxanka) iyo habka koollada alxanka (dib-u-qulqulka alxanka).
Kala duwanaanshahooda ugu weyn waa:
①Nidaamka balastar ka hor waa ka duwan yahay.Tii hore waxay isticmaashaa xabagta balastarka ah tan dambena waxay isticmaashaa koollada alxanka.
②Nidaamka balastar ka dib waa ka duwan yahay.Kan hore waxa uu maraa foornada dib u soo qulqulaya si uu u daweeyo xabagta oo uu ku dhejiyo qaybaha looxa PCB.Mawjada alxanka ayaa loo baahan yahay;kan dambe waxa uu maraa foornada dib-u-qulqulaya ee alxanka.
4. Marka loo eego habka SMT, waxaa loo qaybin karaa noocyada soo socda: habka kor u qaadista hal dhinac ah, habka labajibbaaran ee labajibbaaran, habka baakadaha isku dhafan ee laba-geesoodka ah.
①Ku soo ururi adigoo isticmaalaya kaliya qaybaha korka korka
A. Kulan hal dhinac ah oo leh kor-u-qaadid keliya (habraaca kor-u-qaadista hal-dhinac) Habka: daabacaadda muraayadda alxanka → qaybaha dhejinta → alxanka dib u soo celinta
B. Isku-dubarid laba-geesood ah oo leh kor-u-qaadid keliya (habraaca dhejinta laba-geesoodka ah) Habka: daabacaadda muraayadda alxanka → qaybaha dhejinta → alxanka dib u qulqulaya → dhinaca dambe
②Ku soo ururi qaybaha dusha sare ee hal dhinac iyo isku dhafka qaybaha buurta dusha sare iyo qaybo dalool ah oo dhinaca kale ah (habsocodka iskudhafka isku dhafan ee laba-geesoodka ah)
Habka 1: Shaashada daabacaadda alxanka alxanka (dhinaca sare) → qaybaha dhejinta → alxanka dib u qulqulaya → dhinaca dambe → qaybinta (dhinaca hoose) → qaybaha kor u qaadista
Habka 2: Shaashadda daabacaadda alxanka alxanka (dhinaca sare) → qaybaha dhejinta → alxanka dib-u-soo-celinta → qalabka mashiinka (dhinaca sare) → dhinaca kale → qaybinta (dhinaca hoose)
③ Dusha sare waxay isticmaashaa qaybo daloolsan, oogada hoosena waxay isticmaashaa qaybaha korka korka (habka isku dhafka laba-geesoodka ah)
Habka 1: Qaybinta → Qaybaha rakibaadda → daweynta heerkulka sare → dhinaca kale → Qaybaha gacanta gelinta → alxanka hirarka
Habka 2: Ku-xidhka mishiinka → dhinaca dambe → qaybinta → balastar → daawaynta heerkul sare → alxanka hirarka
Habka gaarka ah
1. Socodka habka isu-ururinta dusha sare ee hal-dhinac ah Codso koollada alxanka si aad ugu dhejiso qaybaha iyo alxanka dib u qulqulaya
2. Socodka isku xidhka dusha laba-dhinac leh Dhinac ayaa dabaqaya koollada alxanka si ay ugu dhejiso qaybaha iyo dib u qulqulaya xabagta alxanka B dhinaca waxay dabaqaysaa koollada alxanka si ay ugu dhejiso qaybaha iyo dib u soo celinta alxanka
3. Isku dar hal dhinac ah oo isku dhafan (SMD iyo THC waa isku dhinac) Dhinac ayaa ku dabaqaya koollada alxanka ee ku dhejinta alxanka dib-u-qulqulaya SMD Dhinac dhexgalaya THC B dhinaca alxanka
4. Isku darka isku dhafan ee hal dhinac ah (SMD iyo THC waxay ku yaalaan labada dhinac ee PCB) Ku mari xabagta SMD ee dhinaca B si aad ugu dhejiso xabagta SMD
5. Ku dheji dhejisyada isku dhafan ee laba-dhinac ah (THC waxay ku taal dhinaca A, labada dhinac A iyo B waxay leeyihiin SMD) Ku dheji koolada alxanka ee dhinaca A si aad ugu dhejiso SMD ka dibna qulqulka alxanka flip board B dhinaca mari SMD koollada SMD si aad ugu dhejisid xabagta SMD dhinac si aad u geliso THC B Dusha mowjada alxanka
6. Isku-dhafka laba-geesoodka ah ee isku dhafan (SMD iyo THC ee labada dhinac ee A iyo B) Dhinac mari koollada alxanka si ay ugu dhejiso SMD dib-u-qulqulaya xabagta B-dhinaca alxanka gacanta
Shan.Aqoonta qaybta SMT
Noocyada qaybaha SMT ee sida caadiga ah loo isticmaalo:
1. Dusha sare iska caabiyeyaasha iyo potentiometers: caabiyeyaasha chip leydi, cylindrical go'an iska caabin ah, shabakadaha iska caabiyaha yar yar, chip potentiometers.
2. Xajiyeyaasha dusha sare ee korka: capacitors chip ceramic capacitors multilayer, capacitors tantalum electrolytic capacitors, aluminium electrolytic capacitors, mica capacitors
3. Inductor-ka korka dusha sare leh: Inductors chip-boowr, inductor chip multilayer
4. Kuul birlab ah: Chip Bead, Kuul badan oo Chip ah
5. Qaybaha kale ee chip: chip multilayer varistor, chip thermistor, chip dusha wave filter, chip multilayer LC filter, chip multilayer line dib u dhac
6. Dusha sare ee qalabka semiconductor: diodes, dulmar yar transistors baakadaysan, dulmar yar oo baakadaysan wareegyada isku dhafan SOP, baakad caag ah leaded wareegyada isku dhafan PLCC, xirmo Quad flat QFP, sidaha chip dhoobada, irridda array xirmo BGA, CSP ( Xidhmada Miisaanka Chip)
NeoDen waxay bixisaa xalal buuxa oo SMT-ga ah, oo ay ku jiraan foornada dib-u-soo-celinta SMT, mishiinka alxanka, mashiinka qaada iyo meelaynta, daabacaha koolada, PCB loader, PCB unloader, chip mounter, SMT AOI mishiinka, mishiinka SMT SPI, mashiinka SMT X-Ray, Qalabka khadka isku dhafka ah ee SMT, PCB wax soo saarka Qalabka SMT, iwm nooc kasta oo mashiinnada SMT ah ee aad u baahan karto, fadlan nala soo xiriir wixii macluumaad dheeraad ah:
Waqtiga boostada: Jul-23-2020