Iyo substrate yePBB pachayo inogadzirwa neyechinhu chakavharirwa uye chinopesana nekukombama. Iyo diki yedunhu zvinhu inogona kuoneka pamusoro pemhangura foil. Pakutanga, foil yemhangura yakafukidzwa paPCB board yese, asi chikamu chepakati chakavharirwa mukugadzira, uye chikamu chasara chinova network yemasekete madiki.

/ Maitiro ekugadzira PCB Bhodhi

Iyi mitsara inodaidzwa kuti ma conductor kana wiring uye anoshandiswa kupa kubatana kwemagetsi pakati pezvikamu zviri paPCB. Kazhinji ruvara rwePCB board rwakasvibira kana brown, inova ruvara rwependi yekupikisa solder. Chidziviriro chekudzivirira chinodzivirira waya yemhangura uye inodzivirira kuti zvikamu kubva pakusungirirwa panzvimbo isiri iyo.

Pcb yekugadzira inotanga ne “substrate” yakagadzirwa neGirazi Epoxy kana zvimwe zvakafanana zvinhu. Danho rekutanga ndere kufotopa iyo wiring pakati pezvikamu ne “kudhinda” mitsara yakaipa yeyakagadzirwa PCB board pane simbi conductor nenzira yeKubvisa kuendesa.

Icho hunyengeri ndechekuparadzira nhete nhete yemhangura foil pamusoro penzvimbo yese uye kubvisa chero yakawandisa. Kana iwe uri kugadzira kaviri-paneli PCB, foil yemhangura inovhara mativi ese e substrate. Uye kuda kuita multilayer board kuti ugone kuita mbiri mbiri kumeso ndiro ine tailormade adhesive “press close” inosimuka yakaenda.

Tevere, kudhirowa uye plating inodiwa kuti ubatanidze muzvikamu zvinogona kuitwa paPCB board. Mushure mekucherwa nemuchina sezvinodiwa, maburi anofanira kunge akaiswa mukati (Plated through-hole Technology, PTH). Mushure mekugadzira simbi yekurapa mukati megomba, mitsara yemukati yega yega yega inogona kubatanidzwa kune mumwe nemumwe.

Makomba anofanirwa kucheneswa marara asati atanga kugadzira. Izvi zvinodaro nekuti resin epoxy inoburitsa mamwe makemikari shanduko mushure mekupisa, uye inovhara yemukati PCB layer, saka inofanira kutanga yabviswa. Kuchenesa nekuputira kunoitwa mumakemikari. Tevere, iwe unofanirwa kuvhara iyo yekunze wiring ne solder pendi (solder inki) kuitira kuti wiring isabata chikamu cheplating.

Mavara akasiyana-siyana echikamu anobva adhindwa pabhodhi redunhu kuratidza nzvimbo yechikamu chimwe nechimwe. Izvo hazvifanirwe kuvharwa pane chero wiring kana munwe wegoridhe, zvikasadaro zvinogona kuderedza solderability kana kugadzikana kwekubatana kwazvino. Pamusoro pezvo, kana paine simbi yakabatana, chikamu che “munwe” chinowanzo kuputirwa negoridhe kuti ive nechokwadi chemhando yepamusoro yekubatanidza ikozvino kana yaiswa mune yekuwedzera slot.

Pakupedzisira, pane muedzo. Kuedza PCB yedunhu pfupi kana kuvhurika dunhu, optical kana yemagetsi bvunzo inogona kushandiswa. Mayedzo eOptical anoshandisa ma scan kuti awane kukanganisa muzvikamu, ukuwo bvunzo dzemagetsi dzinowanzo shandisa flyprobe kutarisa zvese zvinongedzo. Kuyedzwa kwemagetsi kwakaringana pakutsvaga mapfupi maseketi kana mabhureki, asi bvunzo dzemaziso dzinogona kuona zviri nyore matambudziko nemagapu asiri iwo pakati pemakondakita.