Yiziphi izindlela nezindlela zokuphepha zokuvimbela ukuguqulwa kwebhodi le-PCB?

Ukwakhiwa kwe-deformation PCB ibhodi, eyaziwa nangokuthi izinga le-warpage, inethonya elikhulu ekushiseleni nasekusetshenzisweni. Ikakhulukazi emikhiqizweni yokuxhumana, ibhodi elilodwa lifakwe ebhokisini le-plug-in. Kunesikhala esijwayelekile phakathi kwamabhodi. Ngokuncishiswa kwephaneli, igebe phakathi kwezingxenye kumabhodi e-plug-in aseduze liba lincane futhi libe lincane. Uma i-PCB igobile, izothinta ukuxhuma nokukhipha i-plug, izothinta izingxenye. Ngakolunye uhlangothi, ukuguqulwa kwe-PCB kunethonya elikhulu ekuthembekeni kwezingxenye ze-BGA. Ngakho-ke, kubaluleke kakhulu ukulawula ukuguqulwa kwe-PCB ngesikhathi nangemva kwenqubo yokuhlanganisa.

ipcb

(1) Izinga lokuguquguquka kwe-PCB lihlobene ngokuqondile nobukhulu nobukhulu bayo. Ngokuvamile, i-aspect ratio ingaphansi noma ilingana no-2, futhi ububanzi nobukhulu besilinganiso bungaphansi noma bulingana no-150.

(2) I-PCB eqinile ye-Multilayer yakhiwe nge-copper foil, prepreg kanye nebhodi eliwumgogodla. Ukuze kuncishiswe ukuguqulwa ngemva kokucindezela, isakhiwo esine-lamine se-PCB kufanele sihlangabezane nezidingo zokuklama ezilinganayo, okungukuthi, ubukhulu be-foil yethusi, uhlobo nobukhulu be-medium, ukusatshalaliswa kwezinto zehluzo (ungqimba lwesifunda, indiza. ungqimba), kanye nengcindezi ehlobene nobukhulu be-PCB. Umugqa omaphakathi wesiqondisindlela uyalingana.

(3) Kuma-PCB anosayizi omkhulu, iziqinisi ezimelene nokuguqulwa noma amabhodi olayini (abizwa nangokuthi amabhodi angangeni umlilo) kufanele aklanywe. Lena indlela yokuqinisa imishini.

(4) Ezingxenyeni zesakhiwo ezifakwe kancane ezingase zidale ukuguqulwa kwebhodi le-PCB, njengezisekelo zekhadi le-CPU, ibhodi elisekelayo elivimbela ukuguqulwa kwe-PCB kufanele liklanywe.