Ukubaluleka kwama-Stiffeners ku-2-Layer Flexible PCB Stackup

Yethula:

Amabhodi esekethe aphrintiwe aguqukayo (ama-PCB) aguqule imboni yezogesi ngokunika amandla imiklamo ehlangene futhi eguquguqukayo. Banikeza izinzuzo eziningi ngaphezu kozakwabo abaqinile, njengokuphatha okushisayo okuphakeme, isisindo esincishisiwe nosayizi, nokuthembeka okuthuthukisiwe. Kodwa-ke, uma kukhulunywa ngezitaki ze-PCB ezinezingqimba ezi-2 eziguquguqukayo, ukufakwa kwama-stiffener kuba bucayi.Kule bhulogi, sizobhekisisa ukuthi kungani izitaki ze-PCB ezinezingqimba ezi-2 zidinga ama-stiffeners futhi sixoxe ngokubaluleka kwazo ekuqinisekiseni ukusebenza kahle nokuphila isikhathi eside.

Funda mayelana nesitaki se-PCB esivumelana nezimo:

Ngaphambi kokuthi singene ekujuleni kokubaluleka kwama-stiffener, okokuqala sidinga ukuqonda okucacile ukuthi kuyini ukuhleleka kwe-PCB okuguquguqukayo. Ukuhleleka kwe-PCB eguquguqukayo kubhekisela ekuhleleni okuthile kwezendlalelo eziningi ebhodini lesekethe eliguquguqukayo. Ku-stackup yezendlalelo ezi-2, i-PCB eguquguqukayo iqukethe izendlalelo ezimbili zethusi ezihlukaniswe into egqumayo yokuvikela (imvamisa i-polyimide).

Kungani i-PCB enezingqimba ezi-2 eguquguqukayo idinga ama-stiffener?

1. Usekelo lwemishini:

Esinye sezizathu eziyinhloko zokuthi kungani ama-stiffener adingeka kusitaki se-PCB enezingqimba ezi-2 ukuhlinzeka ngosekelo lwemishini. Ngokungafani nama-PCB aqinile, ama-PCB aguquguqukayo awanakho ukuqina okungokwemvelo. Ukwengeza ama-stiffener kusiza ukuqinisa isakhiwo futhi kuvimbele i-PCB ekugobeni noma ekujikeni ngesikhathi sokuphatha noma ukuhlanganisa. Lokhu kubaluleka ikakhulukazi uma ama-PCB aguquguqukayo evame ukugoba noma agoqwe.

2. Thuthukisa ukuzinza:

Izimbambo zidlala indima ebalulekile ekuthuthukiseni ukuzinza kwe-PCB enezingqimba ezi-2 eziguquguqukayo. Ngokunikeza ukuqina ku-PCB, basiza ukunciphisa amathuba okuba khona kwezinkinga ezibangelwa ukudlidliza, njenge-resonance, ezingaba nomthelela omubi ekusebenzeni okuphelele nokuthembeka kwesekethe. Ngaphezu kwalokho, izigxivizo eziqinile zivumela ukuqondanisa okungcono nokubhaliswa ngesikhathi sokuhlanganiswa, okuqinisekisa ukuma okunembile kwezingxenye kanye nokulandelana kokuxhumana.

3. Ukwesekwa kwengxenye:

Esinye isizathu esibalulekile sokuthi kungani izitaki ezi-2-layer flex PCB zidinga ama-stiffeners ukuhlinzeka ngosekelo lwezingxenye. Imishini eminingi kagesi idinga izingxenye ze-surface mount technology (SMT) ukuthi zifakwe kuma-PCB aguquguqukayo. Ukuba khona kwama-stiffener kusiza ukuhlakaza ukucindezeleka kwemishini okwenziwa ngesikhathi sokudayiswa, ukuvimbela ukulimala ezingxenyeni ezinembayo kanye nokuqinisekisa ukuqondana kwazo okulungile ku-substrate eguquguqukayo.

4. Ukuvikelwa ezintweni zemvelo:

Ama-PCB avumelana nezimo avame ukusetshenziswa ezinhlelweni ezichayeka ezimeni zemvelo ezinzima, njengamazinga okushisa adlulele, umswakama, noma ukuchayeka kumakhemikhali. Izimbambo zisebenza njengesithiyo esivikelayo, esivikela amasekhethi athambile emonakalweni ongase ubangelwe yilezi zici zemvelo. Ukwengeza, basiza ukuthuthukisa ukumelana okuphelele kwe-PCB okuguquguqukayo ekucindezelekeni komshini futhi kuvimbele ukungena komswakama, ngaleyo ndlela kukhulise impilo yayo ende nokuthembeka.

5. Ubuqotho Bomzila kanye Nesiginali:

Ku-2-layer flex flex PCB, isignali nokulandelelwa kwamandla kuvamise ukusebenza kungqimba yangaphakathi yebhodi eguqukayo. Izimbambo zikhona ukuze kugcinwe isikhala esifanele futhi kuvimbele ukuphazamiseka kukagesi phakathi kwezingqimba zethusi zangaphakathi. Ngaphezu kwalokho, ama-stiffener avikela ukulandelelwa kwesignali ebucayi yesivinini esiphezulu kusukela ku-crosstalk kanye nokuncishiswa kwesignali, iqinisekisa ukuthinta okulawulwayo futhi ekugcineni igcina ubuqotho besignali yesekethe.

Ekuphetheni:

Kafushane, ama-stiffener ayingxenye ebalulekile ku-PCB enezingqimba ezi-2 eziguquguqukayo njengoba edlala indima ekuhlinzekeni ukusekela komshini, ukuqinisa ukuzinza, ukuhlinzeka ngosekelo lwengxenye, nokuvikela ngokumelene nezici zemvelo.Zivikela amasekhethi anembayo, zigcina ubuqotho besignali obufanele, futhi zivumela ukuhlangana okuphumelelayo nokusebenza okuthembekile ezinhlelweni ezihlukahlukene. Ngokuhlanganisa ama-stiffener kumadizayini e-PCB aguquguqukayo, onjiniyela bangaqinisekisa ukuqina nokuhlala isikhathi eside kwamadivayisi wabo we-elekthronikhi kuyilapho bejabulela izinzuzo zamasekhethi aguquguqukayo.