Zoyenera filimu za PCB zosinthika

Mu positi iyi yabulogu, tiwona zomwe muyenera kuziganizira posankha zida zamakanema zama PCB osinthika ndikupereka zidziwitso zofunikira kukuthandizani kupanga chisankho mwanzeru.

Mzaka zaposachedwa,ma PCB osinthika(mabokosi osinthika osindikizidwa osindikizidwa) atchuka chifukwa chotha kugwirizana ndi mawonekedwe ovuta, kukonza magetsi, ndi kuchepetsa kulemera ndi zofunikira za malo. Ma board osinthika awa amagwiritsidwa ntchito kwambiri m'mafakitale osiyanasiyana, kuphatikiza magalimoto, zamagetsi ogula, zida zamankhwala ndi zakuthambo. Chinthu chofunika kwambiri pakupanga ma PCB osinthika ndikusankha zinthu zoyenera zafilimu kuti zitsimikizire kuti ntchito ndi yodalirika.

1. Kusinthasintha ndi kupindika :

Ma PCB osinthika amadziwika ndi kusinthasintha kwawo komanso luso lopindika. Chifukwa chake, zida zamakanema zoonda zomwe zimagwiritsidwa ntchito pomanga mabwalo oterowo ziyenera kukhala zosinthika komanso zopindika. Chimodzi mwazinthu zomwe zimagwiritsidwa ntchito kwambiri ndi filimu ya polyimide (PI). Polyimide ili ndi zida zamakina zabwino kwambiri monga kulimba kwamphamvu kwambiri, kukhazikika kwamafuta abwino komanso kukana kwamphamvu kwamankhwala, kupangitsa kuti ikhale yabwino pamapulogalamu osinthika a PCB. Kuphatikiza apo, makanema amadzimadzi a crystal polima (LCP) amatchukanso chifukwa cha kusinthasintha kwawo komanso kukhazikika kwabwino kwambiri.

2. Dielectric constant and loss factor :

Kukhazikika kwa dielectric ndi dissipation factor of the film material imagwira ntchito yofunika kwambiri pozindikira momwe ma PCB osinthika amagwirira ntchito. Zinthuzi zimapereka chidziwitso pa kuthekera kwazinthu kutumiza ma siginecha amagetsi popanda kutayika kwakukulu. Ma dielectric otsika nthawi zonse komanso ma dissipation factor ndioyenera kugwiritsa ntchito pafupipafupi chifukwa amachepetsa kutayika kwa ma sign ndikuwonetsetsa kuti magwiridwe antchito odalirika. Zina zomwe zimagwiritsidwa ntchito kwambiri ndi mafilimu otsika a dielectric ndi polyimide ndi LCP.

3. Kukhazikika kwamafuta ndi kukana kutentha:

Ma PCB osinthika nthawi zambiri amakumana ndi kusintha kwa kutentha, makamaka pamagalimoto am'mlengalenga. Chifukwa chake, kusankha zida zamakanema zokhazikika bwino komanso kukana ndikofunikira kuti zitsimikizire kuti magwiridwe antchito ndi odalirika. Mafilimu a polyimide otentha kwambiri, monga Kapton®, amagwiritsidwa ntchito kwambiri popanga PCB yosinthika chifukwa chakuti amatha kupirira kutentha kwakukulu pamene akusunga umphumphu wamapangidwe. Mafilimu a LCP, kumbali ina, ali ndi kukhazikika kwa kutentha komweko ndipo akhoza kuonedwa ngati njira zina.

4. Kugwirizana kwa Chemical:

Zinthu zowonda zamakanema zomwe zimagwiritsidwa ntchito mu ma PCB osinthika ziyenera kukhala zogwirizana ndi malo enieni omwe amatumizidwa. Pamsonkhano wa PCB ndikugwira, kukhudzana ndi zinthu monga zosungunulira, zotsukira, ndi zotuluka ziyenera kuganiziridwa. Polyimide ili ndi kukana kwamphamvu kwamankhwala ndipo ndiye chisankho choyamba pamapulogalamu ambiri osinthika a PCB.

5. Kugwirizana kwa zomatira:

Zinthu zowonda zamakanema nthawi zambiri zimayikidwa ndi zomatira kuti zikhale zolimba mu ma PCB osinthika. Chifukwa chake, ndikofunikira kusankha filimu yomwe imagwirizana ndi zomatira zomwe zasankhidwa. Zinthuzo ziyenera kugwirizana bwino ndi zomatira kuti zitsimikizire mgwirizano wamphamvu ndi kusunga umphumphu wa PCB yosinthika. Musanatsirize zinthu za filimuyi, tikulimbikitsidwa kuti machitidwe omatira enieni ayesedwe kuti agwirizane kuti atsimikizire kugwirizana kodalirika.

6. Kupezeka ndi Mtengo:

Pomaliza, kupezeka kwa zinthu zamakanema ndi mtengo wake ziyenera kuganiziridwanso pakusankha. Ngakhale polyimide ikupezeka kwambiri komanso yotsika mtengo, zida zina monga LCP zitha kukhala zokwera mtengo kwambiri. Kuwunika zofunikira za polojekiti, zovuta za bajeti, ndi kupezeka kwa msika zidzakuthandizani kudziwa bwino kwambiri filimu yopangira mawonekedwe anu osinthika a PCB.

Mwachidule, kusankha filimu yoyenera pa PCB yanu yosinthika ndikofunikira kuti muwonetsetse kuti ikugwira bwino ntchito, kudalirika komanso kukhazikika kwanthawi yayitali.Zinthu monga kusinthasintha ndi kupindika, dielectric nthawi zonse ndi kutayika, kukhazikika kwa kutentha ndi kukana, kuyanjana kwa mankhwala, kugwirizanitsa zomatira, ndi kupezeka ndi mtengo ziyenera kuyesedwa mosamala panthawi yosankha. Poganizira mbali izi ndikuchita kafukufuku wozama, mutha kupanga chiganizo mwanzeru chomwe chingakutsogolereni ku PCB yopangidwa mwaluso, yosinthika kwambiri pakugwiritsa ntchito kwanu.