Kapangidwe ndi Kusonkhana kwa PCB Yokwera Kwambiri: Zipangizo Zofunikira

Mabodi ozungulira osindikizidwa pafupipafupi(PCBs) ndi zinthu zofunika kwambiri pa ntchito zosiyanasiyana, kuphatikizapo kulumikizana kwa mafoni, makina a radar, kulumikizana opanda zingwe, komanso kukonza deta mwachangu. Kagwiridwe ka ntchito ka ma PCB amenewa kamakhudzidwa kwambiri ndi zipangizo zomwe zasankhidwa kuti zipangidwe ndi kukonzedwa kwawo. Nkhaniyi ikufotokoza za zipangizo zoyambira zomwe zimagwiritsidwa ntchito mu kapangidwe ndi msonkhano wa PCB wapamwamba kwambiri, kutsindika makhalidwe awo ndi ubwino wawo.

• Zipangizo Zoyambira: Zipangizo zoyambira zimapanga maziko a PCB yothamanga kwambiri ndipo imagwira ntchito yofunika kwambiri pozindikira mphamvu zake zamagetsi. Zina mwa zipangizo zoyambira zomwe zimagwiritsidwa ntchito mu PCB yothamanga kwambiri ndi izi:
• FR-4FR-4, yomwe ndi yotsika mtengo komanso yogwiritsidwa ntchito kwambiri, imapereka makina abwino komanso osavuta kugwiritsa ntchito.kukhazikika kwa kutenthaKomabe, zakechosasintha cha dielectric(Dk) ndichinthu chotaya madzi(Df) mwina siingakhale yabwino kwambiri pakugwiritsa ntchito pafupipafupi.
• Zipangizo za RogersRogers amadziwika ndi zipangizo zake za dielectric zomwe zimagwira ntchito bwino kwambiri, monga RT/Duroid. Zipangizozi zimakhala ndi ma dielectric constant (Dk) ndi dissipation factor (Df) values ​​abwino kwambiri, zomwe zimapangitsa kuti zikhale zoyenera kugwiritsa ntchito ma PCB apamwamba kwambiri.
• Zipangizo za TaconicTaconic imapereka zinthu zosiyanasiyana zoyeretsera magetsi zomwe zimagwira ntchito bwino kwambiri, monga PEEK (Polyether Ether Ketone) ndi polyimide, zomwe zimapangitsa kuti zikhale zotetezeka kwambiri pa kutentha komanso kuti zikhale zotsika mtengo, zomwe zimapangitsa kuti zikhale zoyenera kwambiri pa ma circuits apamwamba.

• Zipangizo ZoyendetseraKusankha zipangizo zoyendetsera magetsi ndikofunikira kwambiri pakupanga ma PCB okhala ndi ma frequency apamwamba chifukwa zimatsimikiza kusinthasintha kwa magetsi, kukana, komanso kukhulupirika kwa chizindikiro cha magetsi. Zina mwa zipangizo zoyendetsera magetsi zomwe zimagwiritsidwa ntchito kwambiri mu ma PCB okhala ndi ma frequency apamwamba ndi izi:
• Mkuwa: Mkuwa ndi chinthu choyendetsera mpweya chomwe chimagwiritsidwa ntchito kwambiri chifukwa cha mphamvu yake yoyendetsa mpweya komansokugwiritsa ntchito bwino ndalamaKomabe, kukana kwake kumawonjezeka ndi kuchuluka kwa zinthu, kotero zigawo zopyapyala zamkuwa zingagwiritsidwe ntchito pakugwiritsa ntchito pafupipafupi kwambiri.
• Golide: Golide amadziwika chifukwa cha mphamvu yake yoyendetsa bwino komanso kukana kwake kochepa, zomwe zimapangitsa kuti ikhale yoyenera ma PCB amphamvu kwambiri. Imaperekanso zabwinokukana dzimbirikomanso kulimba. Komabe, golide ndi wokwera mtengo kuposa mkuwa, zomwe zimapangitsa kuti asamagwiritsidwe ntchito kwambiri mapulogalamu odula mtengo.
• Aluminiyamu: Aluminiyamu si chinthu chofala kwambiri pa ma PCB amphamvu koma ingagwiritsidwe ntchito pazinthu zinazake pomwe kulemera ndi mtengo wake ndizofunikira kwambiri. Mphamvu yake yoyendetsera zinthu ndi yotsika poyerekeza ndi mkuwa ndi golide, zomwe zingafunike kuganizira zina pakupanga.
• Zipangizo ZamagetsiZipangizo zamagetsi ndizofunikira kwambiri poteteza ma traces oyendetsera magetsi pa PCB ndipo ndizofunikira kwambiri podziwa mphamvu zamagetsi za PCB. Zina mwa zipangizo zamagetsi zapamwamba zomwe zimagwiritsidwa ntchito mu ma PCB okhala ndi ma frequency apamwamba ndi izi:
• Mpweya: Mpweya ndiye chinthu chofala kwambiri cha dielectric ndipo umapereka mphamvu zamagetsi zabwino kwambiri pama frequency apamwamba. Komabe, kukhazikika kwake pa kutentha kuli kochepa, ndipo mwina sikungakhale koyenera kugwiritsidwa ntchito pa kutentha kwambiri.
• Polyimide: Polyimide ndi chinthu chodziwika bwinozida zamagetsi zogwira ntchito kwambiri Yodziwika bwino chifukwa cha kukhazikika kwake kwa kutentha komanso kuchuluka kwa Df kochepa. Imagwiritsidwa ntchito nthawi zambiri m'ma PCB okhala ndi ma frequency apamwamba omwe amafunika kupirira kutentha kwambiri.
• Epoxy: Zipangizo zamagetsi zochokera ku epoxy zimapereka kukhazikika kwabwino kwa makina ndi kutentha. Kawirikawiri zimagwiritsidwa ntchito mu zinthu za FR-4 ndipo zimapereka mphamvu zamagetsi zabwino mpaka pafupipafupi inayake.

Kusankha zipangizo zopangira ndi kusonkhanitsa ma PCB okhala ndi ma frequency apamwamba ndikofunikira kwambiri kuti zinthu ziyende bwino. Zipangizo zoyambira, zipangizo zoyendetsera magetsi, ndi zipangizo zamagetsi zonse zimagwira ntchito yofunika kwambiri pozindikira mphamvu zamagetsi za PCB, kudalirika kwa chizindikiro, ndi kudalirika. Opanga ayenera kusankha mosamala zipangizozi kutengera zofunikira zinazake kuti atsimikizire kuti zikuyenda bwino komanso zikugwira ntchito bwino. Pamene ukadaulo ukupitirira, zipangizo zatsopano ndi zowonjezera zomwe zilipo zipitiliza kuonekera, zomwe zikuwonjezera mphamvu za ma PCB okhala ndi ma frequency apamwamba.