Mukugadzira uye kugadzirisa kwemotokari PCBA, mamwe mabhodhi edunhu anoda kuputirwa nemhangura. Copper yemhangura inogona kunyatso kudzikisa kukanganisa kweSMT chigamba chekugadzirisa zvigadzirwa pakuvandudza kugona kwekudzivirira-kukanganisa uye kuderedza loop nzvimbo. Mhedzisiro yayo yakanaka inogona kushandiswa zvizere muSMT chigamba kugadzirisa. Zvisinei, pane zvinhu zvakawanda zvekuteerera panguva yekudurura mhangura. Rega ndikuzivise ruzivo rwePCBA yekugadzirisa kudira mhangura.
一. Mhangura yekudira nzira
1. Pretreatment chikamu: Pamberi pekudururwa kwemhangura yepamutemo, bhodhi rePCB rinoda kugadziridzwa, kusanganisira kuchenesa, kubvisa ngura, kuchenesa uye mamwe matanho ekuona kuchena uye kutsetseka kwebhodhi repamusoro uye kuisa nheyo yakanaka yekudururwa kwemhangura.
2. Electroless copper plating: Kupfekedza chidimbu che electroless copper plating liquid pamusoro pebhodhi redunhu kuti isanganise nekemikari nefoiri yemhangura kuti iite firimu remhangura ndiyo imwe yenzira dzinowanzozivikanwa dzemhangura. Zvakanakira ndezvokuti kuwanda uye kufanana kwefirimu yemhangura kunogona kudzorwa zvakanaka.
3. Mechanical copper plating: Pamusoro pebhodhi redunhu rakafukidzwa nejira remhangura yemhangura kuburikidza nekugadzirwa kwemagetsi. Iyo zvakare imwe yemhangura yekuputira nzira, asi mutengo wekugadzira wakakwira kupfuura kemikari yemhangura yekuputira, saka unogona kusarudza kuishandisa iwe pachako.
4. Copper coating and lamination: Ndiyo nhanho yekupedzisira yemhangura yese yekuputira. Mushure mekupedzwa kwemhangura, foil yemhangura inoda kudzvanywa pamusoro pebhodhi redunhu kuti ive nechokwadi chekubatanidzwa kwakazara, nekudaro kuve nechokwadi chekufambisa uye kuvimbika kwechigadzirwa.
二. Basa rekuputira mhangura
1. Deredza kuvharidzirwa kwetambo yepasi uye kuvandudza kukwanisa kwekudzivirira-kupindira;
2. Kuderedza kudonha kwemagetsi uye kuvandudza kushanda kwesimba;
3. Unganidza kune tambo yepasi kuderedza nzvimbo yechiuno;
三. Kuchengetedza kudira mhangura
1. Usadurura mhangura munzvimbo yakazaruka ye wiring mukati mechikamu chepakati chebhodhi re multilayer.
2. Nokuda kwekubatana kwe-single-point kune zvikonzero zvakasiyana, nzira ndeyekubatanidza kuburikidza ne0 ohm resistors kana magnetic beads kana inductors.
3. Paunotanga kugadzira wiring, tambo yepasi inofanira kufambiswa zvakanaka. Iwe haugone kuvimba nekuwedzera vias mushure mekudira mhangura kuti ubvise mapini epasi asina kubatanidzwa.
4. Dururira mhangura pedyo nekristaro oscillator. Iyo crystal oscillator mudunhu ndeye yakakwira-frequency emission sosi. Iyo nzira ndeyekudira mhangura yakatenderedza crystal oscillator, uye wobva wagadzika goko rekristaro oscillator zvakasiyana.
5. Iva nechokwadi chekukora uye kufanana kwemhangura yakapfeka layer. Kazhinji, ukobvu hwemhangura clad layer iri pakati pe1-2oz. Iro yemhangura yakakora kana kutetepa zvakanyanya ichakanganisa conductive performance uye chiratidzo chekufambisa mhando yePCB. Kana iyo mhangura yemhangura isina kuenzana, inokonzeresa kukanganisa uye kurasikirwa kwemasaini edunhu pabhodhi redunhu, zvichikanganisa kuita uye kuvimbika kwePCB.