Hauv qhov chaw ntim khoom semiconductor, BGA thev naus laus zis tau dhau los ua qhov tseem ceeb vim nws qhov kev ua tau zoo tus pin. Txawm li cas los xij, cov pob qij txha tuaj yeem raug cuam tshuam los ntawm qhov kub thiab txias thiab kev co. Raws li "kev tiv thaiv kev tiv thaiv," kev ua haujlwm ntawm BGA underfill epoxy ncaj qha txiav txim siab pob kev ntseeg tau. Hauv qab no, peb txheeb xyuas cov yam ntxwv tseem ceeb thiab cov txheej txheem xaiv siv ob lub hnub qub MCOTI cov khoom.
Lub siab -BGA underfill epoxy yuav tsum ua tau raws li plaub yam tseem ceeb.
Ua ntej, tsawg viscosity thiab siab flowability. Hauv BGA ntim, qhov sib txawv ntawm PCB thiab cov khoom siv tsuas yog ob peb puas microns, thiab cov khoom yuav tsum seamlessly sau qhov sib txawv los ntawm capillary nkaus. MCOTI's EW6710, nrog viscosity ntawm tsuas yog 750mPa.s, yog haum rau siab - ntom ntom, nqaim qhov khoob; EW6364, nrog viscosity ntawm 3000mPa.s, muaj zog txaus ruaj khov thiab tsim nyog rau cov ntawv thov uas xav tau lub zog ntau dua.
Qhov thib ob, siab Tg thiab qis CTE yog qhov tseem ceeb rau kev tiv thaiv thermal stress. High Tg ua kom cov khoom tsis soften ntawm qhov kub thiab txias, thaum qis CTE txo thermal expansion thiab contraction, tswj kev sib xws nrog thermal deformation ntawm PCB thiab cov khoom. Ob ntawm peb cov khoom sawv tawm: EW6364 khav theeb Tg ntawm 150 degree, thiab EW6710 khav theeb Tg ntawm 143 degree. Ob leeg tau dhau 1000 lub voj voog ntawm thermal cycling los ntawm -40℃mus rau 85℃uas tsis muaj kev pheej hmoo ntawm kev ua tsis tiav.
Qhov thib ob, lawv muaj kev sib raug zoo zog. Mechanical quab yuam tuaj yeem yooj yim ua rau cov pob qij txha tawg, thiab cov underfills yuav tsum muaj zog shear kom ruaj ntseg. EW6364 boasts lub zog shear ntawm 30MPa, thaum EW6710 ncav cuag 21MPa, deb tshaj qhov kev lag luam qhov tsawg kawg nkaus yuav tsum tau ntau tshaj los yog sib npaug rau 15MPa. Lawv tuaj yeem tiv taus cov xwm txheej xws li tsheb pob thiab cov khoom siv vibration.
Thaum kawg, kev ua raws cai thiab kev tiv thaiv ib puag ncig yog qhov tseem ceeb. High-cov ntawv thov kawg niaj hnub no tso cov kev thov nruj rau cov ntaub ntawv. Ob yam khoom yog RoHS thiab halogen- ntawv pov thawj pub dawb, ua rau lawv tsim nyog rau kev xa tawm. Tsis tas li ntawd, lawv tau raug sim rau 1000 teev ntawm 85℃thiab 85% RH, ua kom pom kev ruaj khov hluav taws xob thiab kev sib txuas ntawm lub zog. Lawv tuaj yeem siv rau hauv cov ntawv thov xws li cov khoom siv sab nraum zoov thiab cov tsheb hauv tsheb. BGA underfill yog qhov tseem ceeb rau cov khoom lag luam lifespan. Nws qis -viscosity ntws, siab Tg, kub tsis kam, muaj zog adhesion, cuam tshuam tsis kam, thiab ib puag ncig tiv thaiv muab kev tiv thaiv zoo rau cov pob qij txha. Cov tuam txhab lag luam yuav tsum tsis txhob ua qhov muag tsis pom qhov "qhov siab tshaj plaws" thaum xaiv cov khoom lag luam, tab sis qhov tseem ceeb ntawm cov yam ntxwv tseem ceeb raws li lawv qhov kev thov tshwj xeeb.
Rau cov ntawv thov nyob rau hauv siab - qhov kub thiab txias, siab - ib puag ncig kev ntxhov siab xws li automotive engine control units thiab industrial cub controllers, EW6364 yog ib qho kev xaiv zoo tshaj plaws, nrog nws Tg siab ntawm 150℃thiab 30MPa shear zog, ua rau nws tiv taus huab cua. Rau cov ntawv thov nyob rau hauv siab - ntom ntom, nqaim- ntim ntim, xws li cov xov tooj ntawm tes processors thiab cov sensors me, EW6710's low viscosity thiab high flowability yog qhov tsim nyog, txhim kho kev tsim khoom.
Raws li semiconductor ntim txuas ntxiv zuj zus, ua denser, thiab ua tau raws li qhov yuav tsum tau muaj zog ntxiv, BGA underfill kev ua tau zoo yuav txuas ntxiv txhim kho. Txawm li cas los xij, lub hauv paus ntsiab lus ntawm "cov yam ntxwv sib piv rau daim ntawv thov" tseem tsis hloov pauv - xaiv cov khoom siv kom ntseeg tau tias txhua qhov sib koom ua ke tiv taus qhov kev sim ntawm lub sijhawm thiab ib puag ncig.
