Iningi lehadiwe elenziwa ngobuningi elenziwa namuhla lenziwa kusetshenziswa ubuchwepheshe be-surface mount noma i-SMT, njengoba kuvame ukubizwa kanjalo. Hhayi ngaphandle kwesizathu! Ngaphezu kokunikeza ezinye izinzuzo eziningi, i-SMT PCB Ungahamba ibanga elide ekusheshiseni izikhathi zokukhiqiza ze-PCB.

Surface ukukhweza ubuchwepheshe

I-Basic Surface Mount Technology (SMT) Umqondo oyisisekelo wokukhiqiza izimbobo uyaqhubeka nokuhlinzeka ngokuthuthuka okukhulu. Ngokusebenzisa i-SMT, i-PCB ayidingi ukuthi iboshwe kuyo. Esikhundleni salokho, abakwenzayo basebenzisa ukunamathisela kwe-solder. Ngaphezu kokungeza ijubane elikhulu, lokhu kwenza inqubo ibe lula kakhulu. Ngenkathi izingxenye zokufaka ze-SMT zingahle zingabi namandla wokufaka ngembobo, zinikeza ezinye izinzuzo eziningi ukulungisa le nkinga.

Ubuchwepheshe be-Surface mount buhamba ngenqubo yezinyathelo ezi-5 ngokulandelayo: 1. Ukukhiqizwa kwe-PCB – Lesi isigaba 2 lapho i-PCB empeleni ikhiqiza amalunga we-solder. I-solder ifakwa ku-pad, ivumela into ukuthi ilungiswe ebhodini lesifunda 3. Ngosizo lomshini, izingxenye zibekwa kumajoyini we-solder aqondile. Bhaka i-PCB ukuze uqine i-solder 5. Hlola izingxenye ezigcwalisiwe

Umehluko phakathi kwe-SMT ne-through-hole ufaka:

The widespread spatial problem in through-hole installations is solved by using surface mount technology. I-SMT ibuye inikeze ukuguquguquka kokuklama ngoba kunika abaklami be-PCB inkululeko yokwenza amasekethe azinikele. The smaller component size means that more components can fit on a single board and fewer boards are required.

Izingxenye ekufakweni kwe-SMT aziholeli. Ukufushane kobude bokuhola kwento yokukhweza ebusweni, kwehlisa ukubambezeleka kokusabalalisa bese kwehlisa umsindo wokupakisha.

Ubuningi bezinto endaweni ngayinye iyunithi buphakeme ngoba buvumela izingxenye ukuthi zibekwe ezinhlangothini zombili.

Kufanelekile ukukhiqizwa ngobuningi, ngaleyo ndlela kuncishiswe izindleko.

Ukuncishiswa ngosayizi kwandisa isivinini sesifunda. Lokhu empeleni kungenye yezizathu eziyinhloko abakhiqizi abaningi abakhetha le ndlela.

Ukungezwani kobuso be-solder encibilikisiwe kudonsa into ihambisane nephedi. Lokhu kulungisa ngokuzenzakalela noma yimaphi amaphutha amancane okungenzeka ukuthi abekhona ekubekweni kwengxenye.

I-SMT ikhombise ukuzinza ngokwengeziwe ezimweni zokudlidliza noma ukudlidlizela okuphezulu.

SMT parts usually cost less than similar through-hole parts.

Okubalulekile, i-SMT inganciphisa kakhulu izikhathi zokukhiqiza ngoba akukho ukubhola okudingekayo. Ngaphezu kwalokho, izingxenye ze-SMT zingabekwa ngesilinganiso sezinkulungwane ngehora, uma kuqhathaniswa nezingaphansi kwenkulungwane ngokufakwa kwemigodi. Lokhu-ke kuholela ekutheni imikhiqizo ikhiqizwe ngejubane elifunwayo, okuqhubeka nokunciphisa isikhathi sokumaketha. Uma ucabanga ukusheshisa izikhathi zokukhiqiza ze-PCB, i-SMT yimpendulo esobala. Ngokusetshenziswa kwamathuluzi esoftware yokuqamba neyokwakha (i-DFM), isidingo sokuphinda sisebenze futhi sihlele kabusha amasekethe ayinkimbinkimbi sincishiswe kakhulu, siqhubeke nokukhuphula ijubane kanye nokuba khona kwemiklamo eyinkimbinkimbi.

Konke lokhu akusho ukuthi i-SMT ayinazithiyo ezingokwemvelo. I-SMT ingahle ingathembeki uma isetshenziswa njengokuwukuphela kwendlela yokunamathisela izingxenye ezibhekene nengcindezi enkulu yemishini. Izakhi ezikhiqiza ukushisa okukhulu noma ukumelana nemithwalo ephezulu kagesi azikwazi ukufakwa kusetshenziswa i-SMT. Lokhu kungenxa yokuthi i-solder ingancibilika emazingeni aphezulu okushisa. Ngakho-ke, ukufaka izimbobo kungagcina kusetshenzisiwe ezimweni lapho izinto ezikhethekile zemishini, zikagesi nezishisayo zenza ukuthi ama-SMT angasebenzi. Ngaphezu kwalokho, i-SMT ayikufanelekeli ukwenziwa prototyping ngoba izingxenye zingadinga ukungezwa noma ukushintshwa esikhundleni sesigaba sokuqalwa, futhi amabhodi wezinto eziphakeme angaba nzima ukuwasekela.

Sebenzisa i-SMT

Ngezinzuzo eziqinile ezinikezwa yi-SMT, kuyamangaza ukuthi sebephenduke indinganiso yanamuhla yokukhiqiza nokukhiqiza. Ngokuyisisekelo zingasetshenziswa kunoma yisiphi isimo lapho kudingeka khona ukuthembeka okuphezulu kanye nevolumu ephezulu ye-PCBS.