Kune nzvimbo dzakawanda muPCB dhizainiapo nzvimbo yakachengeteka inoda kutariswa. Pano, inoiswa muzvikamu zviviri kwenguva pfupi: imwe ndeyemagetsi ane chekuita nekuchengetedza nzvimbo, imwe yacho isiri yemagetsi ine chekuita nekuchengetedza nzvimbo.
Magetsi ane chekuita nekuchengetedza nzvimbo
1.Spacing pakati pewaya
Kusvika pakugona kwekugadzirisa kwemainstreamPCB vagadzirizvine chekuita, nzvimbo shoma pakati pewaya haifanire kunge iri pasi pe4mil. Hurefu hwewaya nhambwe zvakare chinhambwe kubva pawaya kuenda kune waya uye waya kuenda padhi. Kubva pakuona kwekugadzira, iyo yakakura zviri nani kana zvichibvira, uye 10mil ndiyo yakajairika.
2.Pad aperture uye pad width
Panyaya yekugona kugadzirisa kwevagadziri vePCB vemazuva ese, kuvhura kwepadhi hakufanirwe kunge kuri pasi pe0.2mm kana yakadhiriwa nemachini, uye 4mil kana yakadhirwa laser. Iyo aperture kushivirira kwakasiyana zvishoma zvichienderana neplate, kazhinji inogona kudzorwa mukati me 0.05mm, iyo shoma hupamhi hwepadhi haifanirwe kuve isingasviki 0.2mm.
3.Spacing pakati pedhi
Nekuda kwekugona kugadzirisa kwevagadziri vePCB vemazuva ese, nzvimbo pakati pemapadhi haifanire kunge iri pasi pe0.2mm.
4.Kureba pakati pemhangura neplate edge
Kupatsanurwa pakati peganda remhangura rinochajiswa uye kumucheto kwePCB bhodhiinofanira kuva isingasviki 0.3mm. PaDesign-Rules-Board outline peji, isa mutemo we spacing wechinhu ichi.
Kana nzvimbo yakakura yemhangura yakaiswa, kazhinji pane shrinkage chinhambwe pakati pendiro nemupendero, iyo inowanzoiswa ku20mil. MuPCB dhizaini uye indasitiri yekugadzira, pasi pemamiriro akajairwa, nekuda kwekutariswa kwemakanika kwebhodhi redunhu rakapera, kana kudzivirira ganda remhangura rakafumurwa pamupendero webhodhi rinogona kukonzera kutenderera kana magetsi mapfupi, mainjiniya anowanzo kuparadzira nzvimbo yakakura yemhangura yemhangura maererano nemucheto webhodhi shrinkage 20mil, pane ganda remhangura rakapararira kumucheto webhodhi.
Iyi indentation yemhangura inogona kubatwa nenzira dzakasiyana-siyana, dzakadai sokudhirowa mutsara wekuchengetedza pamucheto weplate, uye wozoisa chinhambwe pakati pemhangura uye kuchengeta. Nzira iri nyore inounzwa pano, ndiko kuti, kureba kwakasiyana kwekuchengetedza kwakagadzirirwa zvinhu zvekuisa mhangura. Semuenzaniso, kureba kwekuchengetedza kwebhodhi rose kunoiswa ku10mil, uye kuiswa kwemhangura kunoiswa ku20mil, iyo inogona kuwana mhedzisiro yekuderera kwe20mil mukati memucheto webhodhi uye kubvisa iyo inogona kufa mhangura mumudziyo.
Zvisiri zvemagetsi zvine chekuita nekuchengetedza nzvimbo
1. Hunhu hwakafara, hurefu uye nzvimbo
Hapana shanduko inogona kuitwa mukugadziriswa kweiyo firimu firimu, asi hupamhi hwemitsara yemavara ari pazasi 0.22mm (8.66mil) muD-CODE inofanira kusungirirwa ku 0.22mm, ndiko kuti, hupamhi hwemitsara ye mavara L = 0.22mm (8.66mil).
Hupamhi hwechimiro chese ndiW = 1.0mm, kureba kwechimiro chese H = 1.2mm, uye kupatsanurwa pakati pemavara ndiD = 0.2mm. Kana mavara ari mashoma pane mwero wepamusoro, kudhinda kunenge kusinganzwisisike.
2.Spacing pakati Vias
Iyo yekuburikidza neburi (VIA) kusvika nemu-gomba spacing (kumucheto kusvika kumucheto) inofanira kunge yakakura kudarika 8mil.
3.Kureba kubva pakudhinda skrini kusvika padhi
Kudhinda skrini hakubvumidzwe kuvhara padhi. Nekuti kana iyo skrini inodhinda yakafukidzwa ne solder pad, iyo skrini inodhinda haizove patin kana tin iri pairi, izvo zvinokanganisa chikamu chinokwira. Iyo general board fekitori inoda kuti 8mil spacing ichengetwe zvakare. Kana iyo PCB board yakaganhurwa munzvimbo, 4mil spacing haigamuchirwi. Kana iyo skrini inodhinda ikavharwa netsaona padhi panguva yekugadzira, fekitori yeplate inozobvisa otomatiki kudhinda padhi panguva yekugadzira kuti ive nechokwadi chekuti tini padhi.
Zvechokwadi, inyaya-ne-kesi nzira panguva yekugadzira. Dzimwe nguva skrini inodhinda inochengetwa nemaune pedyo nepedhi, nokuti kana mapedhi maviri ari pedyo kune mumwe nemumwe, chidzitiro chinodhindwa nepakati chinogona kudzivirira zvinobudirira solder connection short circuit panguva yewelding, inova imwe nyaya.
4.Mechanical 3D kureba uye horizontal spacing
Pakuisa zvikamu paPCB, zvinodikanwa kuti utarise kana iyo yakachinjika kutungamira uye kureba kwenzvimbo kuchapesana nemamwe ma mechanical zvimiro. Naizvozvo, mukugadzira, isu tinofanirwa kufunga zvizere kuenderana pakati pezvikamu, pakati pePCB yakapera zvigadzirwa negoko rechigadzirwa, uye dhizaini yemamiriro ekunze, uye kuchengetedza nzvimbo yakachengeteka kune chimwe nechimwe chinotarirwa kuti ive nechokwadi chekuti hapana kupokana munzvimbo.
