Kev tsim thiab ua ntawm FR4 PCBs yuav tsum ua raws li cov qauv nruj thiab cov lus qhia tshwj xeeb. Cov qauv no suav nrog ntau yam, suav nrog lub rooj tsav xwm tuab, tooj liab ntawv tuab, kev ua haujlwm hluav taws xob, thiab kev ua haujlwm zoo, kom ntseeg tau tias cov PCBs ua tau raws li qhov xav tau thiab tuaj yeem ua tau raws li qhov xav tau ntawm ntau yam khoom siv hluav taws xob. Nyob rau tib lub sijhawm, nrog kev txhim kho txuas ntxiv ntawm cov thev naus laus zis thev naus laus zis, kev ua haujlwm ntawm FR4 PCBs tau nce tas li, tsav kev hloov kho txuas ntxiv thiab txhim kho cov qauv kev lag luam.
Basic Substrate Standards: IPC-4101 yog tus qauv tseem ceeb thoob ntiaj teb rau FR4 tooj liab clad laminates. Nws faib FR4 raws li kev ua tau zoo rau hauv hom 1 lub hom phiaj dav dav thiab hom 2 thiab siab dua hom, qhia meej meej cov cim nyuaj xws li lub rooj tsav xwm tuab, cov ntawv ci tooj liab, thiab thermal stability, hloov ua ntej, fragmented kev lag luam xav tau.
Kev Kawm Txuj Ci: Kev lag luam hauv tsev faib cov FR4 tooj liab clad laminates rau qib A1 txog A4 thiab qib B, los ntawm siab mus rau qis. Qib A1 yog npaj rau siab - cov ntawv thov kev ntseeg siab xws li cov tub rog thiab cov khoom siv hluav taws xob hauv tsheb, thaum qib B tsuas yog tsim nyog rau cov khoom siv me me hauv tsev xwb. Cov qib sib txawv sib haum rau cov kev qhia tshwj xeeb rau kev siv lub zog, qhov kub thiab txias, thiab kev ua haujlwm rwb thaiv tsev.
General Performance Specifications
Ua raws li UL94 V-0 nplaim retardant yuav tsum; tus qauv FR4 muaj lub iav hloov pauv kub (Tg) Ntau dua lossis sib npaug li 130 degree, qhov dielectric qhov tsis tu ncua ntawm 4.2 ~ 4.8 ntawm 1GHz, thiab qhov nqus dej tsawg dua lossis sib npaug li 0.10%. Nws tseem yuav tsum tau ua raws li EU RoHS 2.0 halogen-dawb ib puag ncig cov cai.
Ua Cov Qauv Txais
IPC-A-600 yog tus qauv lees paub dav dav rau FR4 PCB cov khoom tiav. Nws muab cov qauv lees paub meej rau qhov ntev xws li dielectric txheej thickness, tooj liab ntawv ci thickness, metallized qhov zoo, thiab cov tsos tsis xws luag, ua ib qho kev lees txais rau ob qho tib si PCB manufacturers thiab cov neeg siv khoom.