Ziziphi iiMfuno zeBhodi yePCB yoYilo lweSakhiwo esiFanelekileyo?

I-Multilayer PCB iqulunqwe kakhulu ngefoyile yobhedu, i-semi-curred sheet, ibhodi engundoqo.Kukho iindidi ezimbini zesakhiwo sokucofa-fit, ezizezi, ifoyile yobhedu kunye nebhodi engundoqo ehambelana nesakhiwo kunye nebhodi engundoqo kunye nebhodi engundoqo ehambelana nesakhiwo sokushicilela.I-foil yobhedu ekhethwayo kunye nesakhiwo se-core lamination, iipleyiti ezikhethekileyo (ezifana ne-Rogess44350, njl.)Qaphela ukuba ulwakhiwo olucinezelweyo (Ulwakhiwo lwePCB) kunye nedayagram yokomba yolandelelwano lwebhodi epakishiweyo (Iinqwanqwa zokupakishwa) ziingqikelelo ezimbini ezahlukeneyo.Eyangaphambili ibhekisa kwi-PCB icinezelwe kunye xa isakhiwo esipakishweyo, ekwabizwa ngokuba yisakhiwo esipakishweyo, le yokugqibela ibhekisa kuyilo lwePCB yokupakisha, eyaziwa ngokuba yinkqubo yokupakisha.

1. Iimfuno zoyilo lwesakhiwo zicinezelwe kunye

Ukuze kuncitshiswe isenzeko se-PCB warpage, i-PCB icinezelwe kunye kwisakhiwo kufuneka ihlangabezane neemfuno ze-symmetry, oko kukuthi, ubukhulu befoyile yobhedu, udidi lomaleko wemidiya kunye nobukhulu, uhlobo losasazo lwegraphic (umaleko womgca, umaleko wendiza), icinezelwe kunye isalamane esilingeneyo. kumbindi othe nkqo wePCB.

2. Ukutyeba kobhedu komqhubi

(1) ukutyeba kobhedu komqhubi okuphawulwe kwimizobo yobunzima bobhedu obugqityiweyo, oko kukuthi, ukutyeba kobhedu olungaphandle kobunzima befoyile yobhedu esezantsi kunye nobukhulu bomaleko wokutyabeka, ubungqingqwa bangaphakathi bobhedu kubunzima bangaphakathi. ifoyile yobhedu esezantsi.Ubunzima bangaphandle bobhedu kumzobo buphawulwe "njengobunzima befoyili yobhedu + i-plating, kwaye ubukhulu bobhedu bangaphakathi buphawulwe "njengobunzima be-foil yethusi".

(2) I-2OZ kunye neengqwalasela zesicelo sobhedu esisezantsi esityebileyo.

Kufuneka isetyenziswe i-symmetrically kwisakhiwo esine-laminated.

Kangangoko kunokwenzeka ukuphepha ukubeka kwi-L2 kunye ne-Ln-2 umaleko, oko kukuthi, Phezulu, umphezulu ophantsi womgangatho wesibini wangaphandle, ukuze uphephe ukungalingani komphezulu we-PCB, ukushwabana.

3. Iimfuno zesakhiwo esicinezelweyo

Ukucofa inkqubo yinkqubo engundoqo yemveliso ye-PCB, amaxesha amaninzi imingxuma ecinezelweyo kunye nokuchaneka kolungelelwaniso kuya kuba kubi kakhulu, ukuguqulwa kwe-PCB enzulu, ngakumbi xa i-asymmetric icinezelwe kunye.Iimfuno zokunyibilikisa zokuthambisa, ezifana nobungqingqwa bobhedu kunye nobunzima bemidiya kufuneka buhambelane.