Izikhokelo zeFR4: Xa ungayisebenzisa kwaye xa ungakwazi

Izikhokelo zeFR4: Xa ungayisebenzisa kwaye xa ungakwazi

Uninzi lweenjineli zombane kunye nabantu ababandakanyekayo kwiibhodi zesekethe eziprintiweyo baqhelene noFr4. Fr4 yeyona nto iphambili esetyenziselwa ukwenza iibhodi zesekethe ezingqongqo. Nangona kunjalo, abantu abaninzi abazi ukuba i-Fr4 iyodwa, makuyekeleni ukuba kutheni eyona nto ithandwa i-PCB.

Funda ukuze ufunde ngakumbi malunga neebhodi zesekethe eziprintiweyo eziprintiweyo, ezinjengee ziyintoni, kutheni zithandwa kangaka, kwaye indlela entetho ye-PCB ithelekiswa nolunye ukhetho kushishino.


Yintoni i-fr4 i-fr4?

UFr4 ubhaliwe njengoFr-4, igama kunye nenqanaba. Oku kusithiwa kusebenza kwiglasi ye-fiber firn yomeleza i-EPOXY DRINS esetyenziswayo ekwenzeni iibhodi zesekethe eziprintiweyo. Nangona kunjalo, iwayinini ikwasetyenziswa njengenqanaba le-EPOXY le-emoxy. Uyilo olusisiseko lubonisa umgangatho osisiseko we-lamote, okuthetha ukuba iibhodi ezahlukeneyo kunye noyilo luwe phantsi kwenqanaba le-Fr4. I "Fr" egameni imele ukulungiswa kwelangatye, ngelixa i "4" kuthetha ukuba izinto zahluke kwabanye kwiklasi enye.

Izixhobo ngokubanzi ezaziwa ngokuba yi-Fr4 sisiseko esiyinxalenye. Olona phawu lusisiseko lwezinto ezibonakalayo yi-fiberglass ehlelwa kwiphepha elinamatye anye. I-fiberglass ibonelela ngokuzinza okufunekayo kwi-Fr4. Olu nqabi lwangaphakathi lwe-fiberglass lujikelezwe kwaye lugqunywe nge-Eposurment yeFlether. Oku kuphelisa i-resin idlulisela ubungqola kwizinto, phakathi kwezinye izinto ezenzeka emzimbeni.


Iphepha le-FR4 lithandwa kakhulu phakathi kweenjineli zombane kunye nabaqulunqi njenge-PCB. Ixabiso eliphantsi lezinto eziphantsi kunye nokungahambi kakuhle, kunye nobutyebi bayo bezinto eziluncedo emzimbeni, zibonisa le nto idumileyo. Iphepha le-FR4 iphepha lezinto zombane ngamandla aphezulu kaDieecric. Bakwanokuba namandla aphezulu ekungabikho komlinganiso wobunzima, balula kwaye bachasa umswakama. Yongeza oku kubushushu beqondo lobushushu lobushushu, kwaye i-FR4s inokuqhuba kakuhle kwiimeko zokusingqongileyo.


Uqhagamshelo lwe-FR4-PCB

Ezi mpawu zenza i-fr4 ibala elifanelekileyo leenkqubo zokwenza umgangatho wePCB. Xa isetyenziswe kakuhle, ezi ndawo zinokwenza isiseko sePCB ekumgangatho ophezulu kunye neendleko eziphantsi.

Kwi-PCB, i-FR4 ibonisa i-backbone ephambili yokufaka i-backbone. Esi sisiseko senu iinkampani zemveliso zakha iisekethe. Nje ukuba ilungele, iibhodi ze-Fr4 zichithwe kunye ne-foil enye okanye ezingaphezulu ze-foil yobhedu besebenzisa ubushushu kunye nemibhedesi. Olu polisa lubonisa isekethe kwimveliso egqityiweyo kwaye unokugubungela omnye okanye omabini amacala, kuxhomekeke kuyilo lweBhodi.


I-PCBS entsonkothileyo inokusebenzisa ngaphezulu kwelinye icala, kwaye iBhodi inokude imekish ' Ukusuka apha, iphaluka iyatsalwa kwaye icinywe imaski yomrhwebi, ilungisa iBhodi ukuba ibe ngumthengisi wokugqibela we-silkscreen kunye nenkqubo yokuthengisa elandelayo.


Ungayikhetha njani i-FR4 ubukhulu

Xa u-odola iprojekthi yeprojekthi ye-PCB, umyili okanye injineli yombane kufuneka ichaze ubukhulu be-FR4 PCB. Oku kulinganiswa kwi-intshi, njengamawaka e-intshi, okanye wena okanye iimilimitha, kuxhomekeka kulawulo olusebenzayo. Iishiti ze-Fr4 ziza kuluhlu olubanzi lwamanqanaba, kuxhomekeka kwiimfuno zeprojekthi, kodwa zihlala zisusela kwi-10 ukuya kwi-3 i-intshi.