Chii chatinofanira kuita pamberi peSMT maPCB panguva yegungano rePCB?

Chii chatinofanira kuita pamberi peSMT maPCB panguva yegungano rePCB?

PCBFuture ine smt yekuunganidza fekitori, iyo inogona kupa iyo SMT gungano masevhisi kune diki pasuru 0201 zvikamu.Inotsigira nzira dzakasiyana dzekugadzirisa dzakadai seturnkey PCB musanganouye pcba OEM masevhisi.Zvino, ini ndichakuzivisa kwauri Ndeipi yekuongorora inofanirwa kuita isati yaitwa SMT PCB kugadzirisa?

 1.Kuongororwa kweSMT zvikamu

Zvinhu zvekuongorora zvinosanganisira: solderability, pini coplanarity uye usability, iyo inofanirwa kutorwa nedhipatimendi rekuongorora.Kuti tiedze kutengeswa kwezvikamu, tinogona kushandisa simbi isina tsvina kusungirira chikamu uye kunyudza muhari yerata pa235±5℃ kana 230±5℃, toiburitsa pa2±0.2s kana 3±0.5s.Isu tinofanirwa kutarisa mamiriro ekupedzisira welding pasi pe20x microscope.Zvinotarisirwa kuti inopfuura 90% yekuguma kwewelding yezvikamu zvakanyoroveswa netini.

Yedu SMT process workshop ichaita pazasi ongororo yekutarisa:

1.1 Tinogona kutarisa migumo yewelding kana pini nzvimbo dzezvikamu zveoxidation kana kusvibiswa zvinoonekwa kana negirazi rinokudza.

1.2 Kukosha kwezita, kutsanangurwa, modhi, kurongeka, uye zviyero zvekunze zvezvikamu zvinofanira kuenderana nezvinodiwa nePCB.

1.3 Mapini eSOT neSOIC haagone kukanganiswa.Kune akawanda-anotungamira maQFP madhizaini ane inotungamira pitch isingasviki 0.65mm, iyo coplanarity yepini inofanira kunge iri pasi pe0.1mm uye isu tinokwanisa kuongorora neinokwira optical inspection.

1.4 YePCBA inoda kucheneswa kweSMT patch process, mucherechedzo wezvikamu haufanirwe kudonha mushure mekuchenesa, uye haugone kukanganisa mashandiro uye kuvimbika kwezvikamu.Kuti isu tinogona kuona kuongorora mushure mekuchenesa.

2Kuongororwa kwePCB

2.1 Iyo PCB land pateni uye saizi, solder mask, sirika sikirini, uye kuburikidza negomba marongero anofanirwa kusangana nezvinodiwa zvemagadzirirwo eSMT akadhindwa edunhu mabhodhi.Tinogona kutarisa kuti pad spacing ine musoro, skrini yakadhindwa padhi, uye iyo via inogadzirwa padhi, nezvimwe.

2.2 Zviyero zvePCB zvinofanirwa kuenderana, uye zviyero, maburi ekumisikidza, uye mareferenzi mamaki ePCB anofanirwa kusangana nezvinodiwa zvemichina yekugadzira.

2.3 PCB inotenderwa kupeta saizi:

2.3.1 Kukwira/Kumusoro: Kureba 0.2mm/50mm uye kunonyanyisa 0.5mm/kureba kwePCB yese.

2.3.2 Kudzika/concave: kureba kwe0.2mm/50mm uye kunonyanyisa 1.5mm/kureba kwePCB yese.

2.3.3 Tinofanira kutarisa kuti PCB yakasvibiswa here kana kuti yakanyorova.

3Iwo ekuchengetedza eSMT PCB maitiro:

3.1 Nyanzvi inopfeka mhete yakaongororwa yemagetsi.Tisati plug-in, isu tinofanirwa kutarisa zvikamu zvemagetsi zveodha yega yega hazvina zvikanganiso / kusanganisa, kukuvara, deformation, zvikwambo, nezvimwe.

3.2 Iyo plug-in board yePCB inoda kugadzirira zvigadzirwa zvemagetsi pachine nguva, uye cherechedza gwara reiyo capacitor polarity rinofanira kunge rakarurama.

3.3 Mushure mekunge basa rekudhinda reSMT rapera, tarisa kune zvigadzirwa zvakakanganisika senge pasina kushaikwa kuisa, kuisa reverse, uye kusarongeka, nezvimwewo, uye isa tin yapera PCB mune inotevera maitiro.

3.4 Ndokumbira upfeke mhete yemagetsi pamberi peSMT PCB panguva yegungano rePCB.Iyo simbi yesimbi inofanira kunge iri pedyo neganda re wrist uye yakanyatsogadziriswa.Shanda uchichinjana nemaoko maviri.

3.5 Zvinhu zvesimbi zvakaita se USB, IF socket, chivharo chekudzivirira, tuner uye network port terminal inofanira kupfeka machira emunwe paunenge uchipuragi.

3.6 Nzvimbo uye kutungamira kwezvikamu zvinofanira kunge zvakarurama.Izvo zvikamu zvinofanirwa kunge zvakati sandara pakatarisana nebhodhi repamusoro, uye zvikamu zvakasimudzwa zvinofanirwa kuiswa paK tsoka.

3.7 Kana izvo zvinyorwa zvisingaenderane nezvakatsanangurwa paSOP neBOM, zvinofanirwa kuziviswa kune mutariri kana mutungamiri weboka nenguva.

3.8 Nyaya yacho inofanirwa kubatwa zvine hungwaru.Usarambe uchishandisa PCB ine zvikamu zvakakanganisika, uye crystal oscillator haigone kushandiswa mushure mekunge yadonha.

3.9 Ndapota rongedza uye chengeta nzvimbo yebasa yakachena usati washanda uye wobva kubasa.

3.10 Kunyatsoteerera mitemo yekushanda yenzvimbo yebasa.PCB munzvimbo yekutanga yekuongorora, nzvimbo yekuongorora, nzvimbo yakakanganisika, nzvimbo yekuchengetedza, uye nzvimbo yakaderera isingabvumirwi kune imwe nzvimbo.

4Sei uchisarudza PCBFuture yako pcb gungano mabasa?

4.1The simba vimbiso

4.1.1 Wekishopu: Ine midziyo kubva kunze kwenyika, iyo inogona kuburitsa 4 miriyoni mapoinzi pazuva.Maitiro ega ega ane QC anogona kuchengeta iyo PCB mhando.

4.1.2 DIP yekugadzira mutsara: Kune maviri wave soldering michina, uye isu tine vanopfuura gumi nevaviri vashandi vane ruzivo vane makore anopfuura matatu echiitiko.Vashandi vane hunyanzvi hwepamusoro uye vanogona weld akasiyana plug-in zvinhu.

4.2Iko kuvimbiswa kwehutano, kudhura kwakanyanya

4.2.1 High-kuguma midziyo inogona kunamira zvakarurama maumbirwo zvikamu, BGA, QFN, 0201 zvinhu.Inogonawo kushandiswa kune sampuli chigamba uye nekuisa zvinhu zvakawanda nemaoko.

4.2.2 Oseprototype pcb gungano sevhisi, vhoriyamu pcb musanganomasevhisi anogona kupihwa.

4.3Ruzivo rwakapfuma muSMT PCB uye kutengesa kwePCB, uye inguva yekutumira yakagadzikana.

4.3.1 Masevhisi akaunganidzirwa kuzviuru zvemakambani emagetsi, anosanganisira sevhisi yegungano reSMT yemhando dzakasiyana dzemidziyo yemotokari uye mabhodhi ekudzora maindasitiri.Iyo PCB nePCB gungano inotumirwa kuEurope nekuUnited States, uye mhando yacho inosimbiswa nevatengi.

4.3.2 Kutumirwa nenguva.Iwo akajairwa 3-5 mazuva kana zvinhu zvakakwana uye kugadzirisa EQ, uye mabheti madiki anogona zvakare kutumirwa muzuva.

4.4Yakasimba kugadzirisa kugona uye yakanaka mushure mekutengesa-sevhisi

4.4.1 Injiniya yekugadzirisa ine ruzivo rwakapfuma uye vanogona kugadzirisa maPCB akaremara anokonzerwa neakasiyana chigamba welding.Tinogona kuve nechokwadi chekubatanidza chiyero chePCB yega yega.

4.4.2 Basa revatengi richapindura paawa makumi maviri nemana uye kugadzirisa matambudziko ako ekuraira nekukurumidza sezvinobvira.