Tichasangana nenyaya dzakasiyana-siyana dzekuchengetedza nzvimbo mune zvakajairwa PCB dhizaini, senge kupatsanura pakati pe vias nemapads, uye kupatsanura pakati pematanho nematehwe, zvinova zvinhu zvese zvatinofanira kufunga.
Isu tinopatsanura idzi nzvimbo mumapoka maviri:
Electrical safety clearance
Non-electrical safety clearance
1. Kuchengetedzwa kwemagetsi kureba
1. Kupatsanurana pakati pewaya
Iyi spacing inoda kufunga nezve kugadzirwa kwemugadziri wePCB.Zvinokurudzirwa kuti kupatsanurwa pakati pezvironda kusiri pasi pe4mil.Mutsetse wepakati wemutsara ndiwo zvakare mutsara-ku-mutsetse uye mutsara-kune-pedhi.Saka, kubva pakuona kwekugadzirwa kwedu, hongu, iyo yakakura zviri nani kana zvichibvira.Kazhinji, iyo yakajairwa 10mil ndiyo yakawanda.
2. Pad aperture uye pad width
Zvinoenderana nemugadziri wePCB, kana iyo pad aperture yakadhirowa nemichina, iyo shoma haifanirwe kunge iri pasi pe0.2mm.Kana laser drilling ikashandiswa, zvinokurudzirwa kuti zvishoma hazvisi pasi pe4mil.Iyo aperture kushivirira kwakasiyana zvishoma zvichienderana nendiro, kazhinji inogona kudzorwa mukati me 0.05mm, uye hudiki padhi hupamhi haifanire kunge yakaderera pane 0.2mm.
3. Kupatsanurana pakati pepedhi nepedhi
Zvinoenderana nekugona kwekugadzirisa kwemugadziri wePCB, zvinokurudzirwa kuti chinhambwe chiri pakati pedhi uye padhi chisiri pasi pe0.2mm.
4. Nharaunda pakati peganda remhangura uye kumucheto kwebhodhi
Chinhambwe pakati peganda remhangura yakachajirwa uye PCB board mupendero zviri nani kwete isingasviki 0.3mm.Kana iri nzvimbo yakakura yemhangura, inowanzoda kudzoserwa kubva kumucheto webhodhi, kazhinji inoiswa ku20mil.
Mumamiriro ezvinhu akajairwa, nekuda kwekufunga kwemakina kwebhodhi redunhu rakapedzwa, kana kudzivirira kupeta kana zvikabudura zvemagetsi zvinokonzerwa nemhangura yakafumurwa pamucheto webhodhi, mainjiniya anowanzo dzikisa mabhuroko makuru emhangura ne20 mils zvichienderana nekumucheto kwebhodhi. .Ganda remhangura harisi nguva dzose rinopararira kumucheto webhodhi.Kune nzira dzakawanda dzekutarisana nemhando iyi yemhangura shrinkage.Semuenzaniso, dhirowa dhizaini yekuchengeta pamucheto webhodhi, wobva waisa chinhambwe pakati pemhangura paving uye yekuchengeta.
2. Isiri yemagetsi yakachengeteka kureba
1. Hunhu hwakafara nekureba nepakati
Nezve silika skrini mavara, isu tinowanzo shandisa tsika dzakajairwa senge 5/30 6/36 mil zvichingodaro.Nokuti kana mashoko acho ari maduku zvikuru, kudhindwa kwacho kunenge kusina kujeka.
2. Chinhambwe kubva pachidzitiro chesilika kusvika padhi
Sirika chidzitiro hachibvumirwi kuisa padhi, nokuti kana sirika chidzitiro akafukidzwa padhi, sirika chidzitiro haangavi tinned panguva tinning, izvo zvichaita kukanganisa chikamu mounting.
Kazhinji, fekitori yebhodhi inoda nzvimbo ye8mil kuti ichengetwe.Kana zviri izvo nekuti mamwe mabhodhi ePCB akasimba chaizvo, isu hatigone kugamuchira iyo 4mil pitch.Zvino, kana sirika sikirini yakavhara padhi netsaona panguva yekugadzira, fekitori yebhodhi inozongobvisa chikamu chesiririka sikirini chasara padhi panguva yekugadzira kuti ive nechokwadi chekuti padhi yakanamirwa.Saka tinofanira kuteerera.
3. 3D kureba uye yakatwasuka spacing pane mechanical chimiro
Paunenge uchiisa zvikamu paPCB, funga kana pachava nekukakavadzana nemamwe magadzirirwo emakinari munzira yakachinjika uye kureba kwenzvimbo.Naizvozvo, mukugadzira, zvinodikanwa kuti utarise zvizere kuchinjika kwechimiro chemuchadenga pakati pezvikamu, uye pakati pePCB yakapedzwa negoko rechigadzirwa, uye kuchengetedza chinhambwe chakachengeteka kune chimwe nechimwe chinotarirwa chinhu.