Kupisa kupisa kwePCB redunhu bhodhi chinhu chakakosha chinongedzo, saka chii chinopisa hunyanzvi hwePCB redunhu bhodhi, ngatikurukurei pamwe chete.
Bhodhi rePCB rinoshandiswa zvakanyanya kupisa kupisa kuburikidza nePCB board pachayo imhangura-yakavharwa/epoxy girazi jira substrate kana phenolic resin girazi jira substrate, uye kune chidimbu chidiki chepepa-yakavharwa nemhangura-yakavharwa pepa rinoshandiswa. Kunyangwe ma substrates aya aine hunhu hwakanakisa hwemagetsi uye zvigadziriso zvekugadzirisa, ane husina kunaka hwekupisa kupisa, uye senzira yekupisa kupisa kwepamusoro-kupisa zvikamu, hazvingatarisirwe kuitisa kupisa nePCB pachayo, asi kubvisa kupisa kubva pamusoro. chikamu kumhepo yakapoteredza. Zvisinei, sezvo zvigadzirwa zvemagetsi zvakapinda munguva yechikamu cheminiaturization, high-density installation, uye gungano rinopisa zvikuru, hazvina kukwana kuvimba chete pamusoro penzvimbo duku zvikuru kuti iparadze kupisa. Panguva imwecheteyo, nekuda kwekushandiswa kukuru kwezvinhu zvakasungirirwa pamusoro seQFP neBGA, kupisa kunokonzerwa nezvikamu zvinotumirwa kuPCB board muhuwandu hwakawanda, saka, nzira yakanakisisa yekugadzirisa kupisa kwekupisa ndeyekuvandudza kupisa kwekupisa simba kwePCB pachayo yakanangana nechinhu chekudziya, icho chinoparidzirwa kana kugoverwa kuburikidza nePCB board.
PCB chimiro
a, mudziyo unonzwa kupisa unoiswa munzvimbo inotonhora yemhepo.
b, mudziyo wekuona tembiricha unoiswa munzvimbo inopisa zvakanyanya.
c, midziyo iri pabhodhi rimwe chete rakadhindwa inofanira kurongeka sezvinobvira maererano nehukuru hwekupisa kwayo uye dhigirii yekupisa kupisa, kupisa kuduku kana kutadza kupisa midziyo yekudzivirira (yakadai sediki chiratidzo che transistors, madiki-scale integrated circuits, electrolytic capacitors. , etc.) yakaiswa munzvimbo yakanyanya kukwira yekuyerera kwemhepo inotonhorera (yekupinda), Midziyo ine chizvarwa chakakura chekupisa kana kupikisa kwakanaka kwekupisa (senge simba transistors, yakakura-yakakura yakabatanidzwa maseketi, nezvimwewo) inoiswa pazasi pemvura yekutonhora. rukova.
d, munzira yakatwasuka, michina yemagetsi-yakakwirira inorongwa sepedyo sezvinobvira kumucheto kwebhodhi rakadhindwa kuitira kupfupisa nzira yekupisa kupisa; Munzvimbo yakatwasuka, zvigadziriso zvine simba repamusoro-soro zvakarongerwa padyo sezvinobvira kune bhodhi rakadhindwa, kuitira kuti kuderedze kukanganiswa kwemidziyo iyi pakupisa kwemamwe maturusi paanoshanda.
e, kupisa kwekupisa kwebhodhi rakadhindwa mumidziyo inonyanya kuenderana nekuyerera kwemhepo, saka nzira yekuyerera kwemhepo inofanira kudzidzwa mukugadzirwa, uye chigadziro kana bhodhi redunhu rakadhindwa rinofanira kugadzirirwa zvinonzwisisika. Kana mhepo ichiyerera, inogara ichiyerera apo kushorwa kwakaderera, saka kana uchigadzira chigadziro pabhodhi redunhu rakadhindwa, zvakakosha kuti urege kusiya nzvimbo huru yemhepo mune imwe nzvimbo. Iko kugadziridzwa kweakawanda akadhindwa edunhu mabhodhi mumushini wese anofanirawo kutarisisa kune imwechete dambudziko.
f, zvimwe tembiricha-sensitive zvishandiso zviri nani akaiswa munzvimbo yakaderera tembiricha (senge pazasi mudziyo), usaise pamusoro kudziyisa mudziyo, akawanda mano anonyatso kudzedzereka marongerwo pamusoro chinjikira ndege.
g, ronga mudziyo une simba repamusoro-soro rekushandisa uye yakakura kupisa kupisa pedyo nenzvimbo yakanakisa yekubvisa kupisa. Usaisa midziyo ine kupisa kwakanyanya mumakona uye kumucheto kwebhodhi rakadhindwa, kunze kwekunge mudziyo wekutonhodza wakarongwa pedyo nawo. Paunenge uchigadzira simba rekudzivirira, sarudza chigadziro chikuru sezvinobvira, uye gadzirisa marongerwo ebhodhi rakadhindwa kuitira kuti ive nenzvimbo yakakwana yekupisa kupisa.
Nguva yekutumira: Mar-22-2024
