SMT assembly chip processing iri pamwe nekuvandudzwa kwezvigadzirwa zvemagetsi kusvika mukusimudzirwa kwepamusoro-soro, gwara rakanaka, uye SMT chip kugadzirisa zvikamu zveiyo diki dhizaini dhizaini inoda kukwanisa kuona kuti PCBA pads haisi nyore kupfupika uye zvakare funga nezve kuchengetedzwa kwezvikamu.
Migumisiro yekusakwana kwechikamu-ku-chikamu kupatsanurwa;
Imwe yemapini ePazasi padivi rekubatanidza paPCB iri padyo zvakanyanya kune inotevera kuburikidza negomba, zvichikonzera kupfupika kwedunhu pakati pepini neiyo via buri, uye PCB inopiswa. Nhambwe iri pakati pegomba rekusungirira uye padhi idiki zvakanyanya. Iyo kuburikidza-gomba pachayo yakabatana zvakananga kune padhi, uye hapana solder inopikisa pakati pegomba uye padhi uye spacing haina kukodzera kune wave soldering process, kana iyo welding parameters, senge kumhanya uye welding nguva, haina kugadziridzwa zvakanaka, zvichikonzera kuenderera mberi welding.
Kuburikidza neburi uye kukwirisa pedhi spacing idiki zvakanyanya. Kuburikidza negomba uye kukwirisa pad spacing idiki zvakanyanya, zvichiita kuti masolder majoini asaite tini, inotonhora welding, isina simbi, monumental uye humwe hurema.
Mapedhi evavakidzani akabatana zvakanyanya padyo nepamusoro-gomba, uye kune njodzi yekuvharisa mumatanho akadai semanyorerwo emvura. Kana gomba rakagadzirirwa padhi, kana kuti padhi iri pedyo negomba, solder ichayerera ichibva mugomba panguva yekudzokorora, zvichiita kuti ive isina kukwana solder. Chikanganiso chekuisa gomba zvakananga pane padhi ndechekuti solder paste inonyunguduka uye inoyerera ichipinda mugomba panguva yekuyerera, zvichikonzera kushaikwa kwetin pane chikamu mapedhi, nekudaro kugadzira chinodhaka solder uye zvichida kukonzera pfupi dunhu.
Kana pasina solder mask pakati pewaya dzinobatanidza kuburikidza neburi remapadhi anokwirisa, kusakwana kwekutengesa senge solder majoini ane diki solder, inotonhora soldering, mapfupi maseketi, unsoldered, uye monumental soldering inogona kuguma. Chinhambwe chiri pakati pe-buri-hole solder ring uye BGA pad iri padyo, uye kunyangwe paine solder mask, iyo solder ring haina kuvharwa nemasolder mask zvichikonzera solder joint yakabatana neburi-buri. Capacitor pads pane simbi kuburikidza-gomba pasina solder mask, zvichikonzera chikamu mapini kushomeka kwetin, kukanganisa kuvimbika kwezvikamu. Solder pad dhizaini mushure megomba, rakanamwa ne solder kuramba inki, solder majoini chaiwo solder uye haigone kutsiviwa.
Naizvozvo, zvakakosha kuve nechokwadi chekugadzirisa dhizaini panguva yekuisa SMT maitiro. Kusakwana dhizaini kunogona kutungamira kune solder kuremara senge yakaderera solder majoini, inotonhora solder, mapfupi maseketi, nezvimwewo, zvichikanganisa kuvimbika kwezvikamu uye kujaira kushanda kwePCB. Yakakodzera pitch dhizaini haingodzikisi zvirema izvi asi zvakare inovandudza solder mhando uye inova nechokwadi chechikamu chekuchengetedza. Uye zvakare, nzvimbo yakakodzera pakati pe-over-gomba uye padhi inobatsira kukwenenzvera maparamendi eiyo wave soldering uye reflow soldering kudzivirira matambudziko akadai sekurasikirwa nemasoja kana manyepo solder uye nekudaro kuvandudza chigadzirwa uye mhando yechigadzirwa. Muchidimbu, vagadziri vemagetsi vanofanirwa kunyatso kudzora nzvimbo pakati pemapadhi uye kuburikidza nemakomba uye kugadzirisa maitiro pakugadzira maPCBA kuitira kuvimbisa kugadzikana uye kuchengetedzeka kwezvigadzirwa zvavo.
