Pane zvakawanda zvekuchengetedza daro rekufunga mukati PCB dhizaini, zvinosanganisira kupatsanura pakati pezvitsvakwa, kupatsanura mavara, kupatsanurana kwepadhi, nezvimwe. Pano, tinoaisa mumapoka maviri: magetsi ane chekuita nekuchengetedza madaro uye asina-nemagetsi-ane hukama hwekuchengetedza madaro.
01 Magetsi-anoenderana Nekuchengetedza Nzvimbo
Trace-to-Trace Spacing
Pakugona kwekugadzirisa kwevagadziri vePCB, iyo shoma nhambwe pakati pematanho haifanire kunge iri pasi pe0.075mm. Mutsara mudiki (minimum trace spacing) zvinoreva kanhambwe kadiki pakati pechironda nechimwe kana kuti pakati pechironda nepedhi. Kubva pakuona kwekugadzira, yakakura trace spacing iri nani. Kunyanya kukosha ndeye 0.127mm.
Pad Hole Diameter uye Pad Width
Kune vagadziri vePCB vemazuva ese, kana padhi ikashandisa kuchera, iyo dhayamita yegomba haifanire kunge iri pasi pe0.2mm. Kana laser drilling ikashandiswa, iyo shoma gomba dhayamita haifanire kunge iri pasi pe0.1mm. Iyo gomba dhayamita kushivirira inogona kusiyana zvishoma zvichienderana nechinhu, asi inowanzodzorwa mukati me 0.05mm. Iyo shoma pad upamhi haifanirwe kuve isingasviki 0.2mm.
Pad-to-Pad Spacing
Kune vanogadzira PCB vanogadzira, iyo diki chinhambwe pakati pemapadhi haifanire kunge iri pasi pe0.2mm.
Copper-to-Edge Spacing
Iyo shoma nhambwe pakati pemhangura mhenyu uye mupendero wePCB haifanirwe kuve isingasviki 0.3mm. Izvi zvinogona kuiswa muKugadzira Mitemo> Bhodhi Outline peji.
Kune yakakura-nzvimbo yemhangura inodururwa, zvakajairika kudzikisa nzvimbo yemhangura mukati kubva kumucheto webhodhi, inowanzoiswa pa 0.2mm. MuPCB dhizaini neindasitiri yekugadzira, kudzivirira zvingangoitika senge kuratidzwa kwemhangura kumucheto kwebhodhi kukonzeresa warping kana zvipfupi zvemagetsi, mainjiniya anowanzo dzikisa nzvimbo yemhangura mukati ne8 mils pane kuiwedzera kusvika kumucheto.
Kune nzira dzakawanda dzekuita kuti mhangura iyi igadziriswe, sekudhirowa dhizaini yekuchengeta pamucheto webhodhi uye kuseta nhambwe pakati pekudira mhangura nenzvimbo yekuchengeta. Nzira yakareruka ndeyekuseta madaro ekuchengetedza akasiyana ezvinhu zvemhangura, senge kuseta iyo yese bhodhi chengetedzo chinhambwe kusvika 0.25mm uye kudira kwemhangura kureba kusvika 0.5mm, izvo zvinozoguma ne 0.5mm yekubvisa kubva kubhodhi kumucheto uku uchibvisa nzvimbo dzemhangura dzakafa muzvikamu.
02 Isiri Yemagetsi-Inoenderana Nekuchengetedza Nzvimbo
Hunhu Hwapamhama, Hurefu, uye Mupamhi
Panyaya yekugadzira silkscreen, hapana shanduko dzinofanirwa kuitwa kune font. Chero mavara ane hupamhi hwemutsara (D-CODE) isingasviki 0.22mm (8.66 mils) anofanira kuita mitsetse yawo kukobvu kusvika 0.22mm. Hupamhi hwehumiro hwese (W) hunofanirwa kuve 1.0mm, uye urefu hwechimiro (H) hunofanira kuita 1.2mm. Kupatsanuka pakati pemavara (D) kunofanirwa kunge kuri 0.2mm. Kana mavara ari madiki pane zvakatemwa izvi, anozoonekwa asina kujeka kana akadhindwa.
Via-to-Via Spacing
Kupatsanurwa pakati pe vias (kuburikidza-ku-via, pakati nepakati) kunofanirwa kunge kuri mamirimita masere.
Silkscreen kune Pad Spacing
Silkscreen haifanire kupindirana nemapedhi. Kana iyo silkscreen yakavhara padhi, inodzivirira kuti padhi irege kutengeswa zvakanaka panguva yegungano. A inokurudzirwa clearance ingangoita 8 miriyoni. Kana nzvimbo yePCB ishoma, 4 mil clearance inogona kugamuchirwa, asi izvi zvinofanirwa kudziviswa kana zvichibvira. Kana iyo silkscreen yakaputira padhi nekusaziva panguva yekugadzira, mugadziri anowanzo bvisa silkscreen munzvimbo yepedhi kuti ave nechokwadi chekutengesa kwakaringana.
Mune zvimwe zviitiko, vagadziri vanogona kuisa nemaune silkscreen padyo nemapadhi, kunyanya kana mapadhi maviri ari pedyo zvakanyanya. Mumamiriro ezvinhu akadaro, silkscreen inokwanisa kudzivirira mapfupi mapfupi pakati pemasodha pads, asi izvi zvinoda kutariswa pane imwe nyaya-ne-kesi hwaro.
Mechanical 3D Kureba uye Horizontal Spacing
Kana uchiisa zvinhu paPCB, zvakakosha kuti utarise kana zvichizopesana nemamwe magadzirirwo emakina maererano nehurefu uye nzvimbo yakachinjika. Munguva yekugadzira chikamu, zvakakosha kuve nechokwadi kuti pane yakaringana nzvimbo pakati pezvikamu, iyo PCB uye chigadzirwa chekunze goko, uye zvimwe zvimiro zvekudzivirira kusawirirana kwemuviri. Kubvumidzwa kwakakodzera kunofanirwa kupihwa kuti kuve nechokwadi kuti hapana kukanganisa kunoitika.
Hunhu huri pamusoro apa ndehwekureva uye hunogona kupa gwara kana uchitsanangura miganho yekuchengetedza mumagadzirirwo ako, asi haimiriri miitiro yeindasitiri yakasimba. Zvakananga zvinodikanwa zvinogona kusiyana zvichienderana nemugadziri wePCB kana magadzirirwo echigadzirwa.
