Inzira y'ibanze yaIkibaho cyumuzunguruko wa PCBgushushanya muri SMT gutunganya chip bisaba kwitabwaho bidasanzwe. Imwe mumigambi nyamukuru yo gushushanya ibizunguruka ni ugutanga imbonerahamwe y'urusobekerane rw'ibibaho bya PCB no gutegura ishingiro ryibishushanyo mbonera bya PCB. Igishushanyo mbonera cyibice byinshi byumuzunguruko wa PCB birasa cyane nkintambwe yo gushushanya yubuyobozi busanzwe bwa PCB. Itandukaniro ni uko insinga zo hagati yerekana ibimenyetso hagati no kugabana ibice by'amashanyarazi imbere bigomba gukorwa. Ufatiye hamwe, igishushanyo cyibice byinshi byumuzunguruko wa PCB ni bimwe. Igabanyijemo intambwe zikurikira:
1. Igenamigambi ryumuzunguruko ririmo ahanini gutegura igenamigambi rinini ryubuyobozi bwa PCB, uburyo bwo gupakira ibice, uburyo bwo kwishyiriraho ibice, hamwe nuburyo bwububiko, ni ukuvuga imbaho imwe, imbaho ebyiri, hamwe nuburyo bwinshi imbaho.
2. Igenamiterere ryimikorere, cyane cyane ryerekeranye nibidukikije bikora hamwe no gushiraho ibice byakazi. Igenamigambi rikwiye kandi ryumvikana ryibidukikije bya PCB birashobora kuzana ubworoherane kubishushanyo mbonera byumuzunguruko no kunoza imikorere.
3. Imiterere y'ibigize no guhinduka. Nyuma yimirimo ibanza irangiye, imbonerahamwe y'urusobekerane irashobora gutumizwa muri pcb, cyangwa imbonerahamwe y'urusobekerane irashobora gutumizwa muburyo butaziguye mubishushanyo mbonera muguhindura pcb. Imiterere yibigize hamwe noguhindura ni umurimo wingenzi mubikorwa bya PCB, bigira ingaruka zitaziguye mubikorwa byakurikiyeho nko gukoresha insinga no gutandukanya amashanyarazi imbere.
4. Igenamigambi rya wiring rishyiraho cyane cyane ibisobanuro bitandukanye kubijyanye no kuzunguruka, nkubugari bwinsinga, intera iringaniye, intera yumutekano hagati yinsinga na padi, kandi binyuze mubunini. Ntakibazo cyakoreshwa gute, amategeko yo gukoresha arakenewe. Intambwe yingirakamaro, amategeko meza yo gukoresha insinga arashobora kurinda umutekano wumurongo wumurongo wumuzunguruko, kubahiriza ibisabwa mubikorwa, no kuzigama ibiciro.
5. Ibindi bikorwa byingirakamaro, nko gutwika umuringa no kuzuza amarira, hamwe no gutunganya inyandiko nkibisohoka muri raporo no kubika icapiro. Izi dosiye zirashobora gukoreshwa mugusuzuma no guhindura imbaho zumuzunguruko za PCB, kandi zirashobora no gukoreshwa nkurutonde rwibintu byaguzwe.
Amategeko agenga ibice
1. Nta nsinga zemewe mu gace ≤1mm kuva ku nkombe z'ubuyobozi bwa PCB no muri 1mm ikikije umwobo uzamuka;
2. Umurongo w'amashanyarazi ugomba kuba mugari bishoboka kandi ntugomba kuba munsi ya 18mil; ubugari bwumurongo wibimenyetso ntibugomba kuba munsi ya 12mil; CPU yinjiza nibisohoka imirongo ntigomba kuba munsi ya 10mil (cyangwa 8mil); intera y'umurongo ntigomba kuba munsi ya 10mil;
3. Ubusanzwe unyuze mu mwobo ntabwo uri munsi ya 30mil;
4. Amacomeka abiri kumurongo: pad 60mil, aperture 40mil; 1 / 4W résistoriste: 51 * 55mil (0805 hejuru yubuso); iyo ucometse, padi 62mil, aperture 42mil; ubushobozi bwa electrodeless: 51 * 55mil (0805 hejuru yubuso); Iyo winjijwe neza, padi ni 50mil naho umwobo wa diameter ni 28mil;
5. Witondere ko imirongo y'amashanyarazi hamwe ninsinga zubutaka bigomba kuba ari radiyo ishoboka, kandi imirongo yikimenyetso ntigomba kunyuzwa mumuzinga.