BGA yog dab tsi thiab nws qhov zoo?
BGA (Ball Grid Array) yog ib txoj hauv kev ntim khoom uas cov khoom siv tau muab tso rau hauv ib qho matrix nyob rau hauv qab ntawm lub nti. Ua ke nrog cov txheej txheem SMT, nws muaj:
- Kev sib txuas ntau dua: Txhawb siab -pin- suav ICs yam tsis muaj pob loj.
- Cov teeb liab qis dua latency thiab parasitic inductance: Cov kab hluav taws xob luv luv ua rau nws zoo tagnrho rau siab -ceev circuits.
- Tus kheej -kev muaj peev xwm ua kom zoo: Ntog nro thaum lub sij hawm reflow txiav cov cuab yeej, txhim kho kev sib dhos raug.
- Txhim kho cua sov dissipation: Ua kom ncaj qha thermal hloov ntawm cov khoom siv thiab PCB tooj liab dav hlau.
- Qhov siab pob qis: Ua tau raws li qhov yuav tsum tau ua ntawm lub teeb yuag, slim tsim.
Common BGA Hom thiab Muaj Peev Xwm Ntau Yam
STHL tuaj yeem ua txhua yam los ntawm micro BGAs (2 × 3 mm) mus rau BGAs loj (45–55 mm), nrog rau qhov tsawg kawg nkaus txhawb siab ntawm 0.25 mm, suav nrog:
- μBGA, FBGA, CSP, WLCSP
- CABGA, CTBGA, CVBGA
- LGA, FCBGA, LBGA
- Tshwj xeeb siab- pob khoom ceev (piv txwv li, ntxeev-chip BGAs)
SMT BGA Assembly - Cov txheej txheem tseem ceeb
1. PCB Pad thiab Via Tsim
- NSMD cov ntaub qhwv tau raug pom zoo, tso cai rau cov ntaub qhwv ib ncig ntawm cov ntaub qhwv sab hauv kom txhim kho kev sib koom ua ke.
- Nyob rau hauv -pad vias yuav tsum tau ntsaws los yog plated kaw kom tsis txhob solder wicking.
- Ntawm -hauv- cov qauv tsim yuav tsum tau npaj kom tsis txhob cuam tshuam rau kev sib txuas ntawm lub pob.
2. Solder Paste Stencil Tsim
- Circular apertures raug pom zoo rau BGA pads.
- Thickness: 100-150 μm, nyob ntawm thaj tsam ntawm qhov sib piv thiab cov khoom siv stencil.
- Laser-txiav stainless hlau stencils kom paub meej tias kev hloov pauv hloov pauv hloov pauv.
3. Siab -Qhov Chaw Ua Haujlwm
- ± 40-50 μm kev tso kawm raug nrog CCD pom kev sib haum xeeb.
- Kev lees paub pob los them nyiaj rau pob ntawv piav qhia qhov kam rau ua.
- Kev tswj qhov chaw siab kom tiv thaiv tau cov nplaum nplaum nyem- tawm thiab luv.
4. Reflow Soldering
- Customized 12-zone nitrogen reflow profile kom txo cov voids thiab txhim khu kev sib koom ua ke.
- Rau ob - sab sib dhos, tiv thaiv hauv qab - cov khoom siv sab nraud los ntawm kev hloov pauv thaum lub sij hawm thib ob reflow.
- Tswj BGA warpage kom paub meej txawm tias cua sov ntawm tag nrho cov pob qij txha.
Kev tshuaj xyuas thiab kev ruaj ntseg zoo
- AOI Optical Inspection: Tshawb xyuas cov khoom siv hluav taws xob sab hauv thiab cov khoom siv tshuaj pleev xim luam ntawv zoo.
- X-Ray Inspection: 100% kev tshuaj xyuas ntawm cov pob qij txha zais kom pom cov pob qij txha, kev sib txuas, qhov khoob, lossis cov pob uas ploj lawm.
- IPC-A-610 Chav Kawm 3 Kev Ua Raws Cai: Tsim nyog rau cov khoom lag luam muaj kev ntseeg siab xws li tsheb thiab khoom siv hluav taws xob kho mob.
Rework thiab Reballing
- Kev tshaj lij rework chaw nres tsheb rau tag nrho cov cuab yeej hloov lossis reballing.
- Kev tswj nruj me ntsis ntawm cov qib noo noo (J-STD-033) thiab cov cua kub cua sov (J-STD-020).
- Txo qhov kev pheej hmoo ntawm theem nrab reflow cuam tshuam rau cov khoom nyob ib sab.
Cov cheeb tsam thov
Cov ntsiab lus
Yog tias koj qhov project ntsib cov teeb meem xws li siab -kev ceev cov teeb liab kev ncaj ncees, thermal tswj, los yog ntev - lub sij hawm cia siab rau - los yog yog BGA ntim ua rau manufacturability kev txhawj xeeb - xa koj cov ntaub ntawv Gerber rau peb. Peb yuav siv engineering insight los txheeb xyuas cov kev pheej hmoo thiab siv peb cov kev paub ntau lawm los tsim kev ua tau zoo, ntau lawm- npaj cov txheej txheem, kom ntseeg tau tias koj SMT BGA sib dhos ua haujlwm zoo los ntawm kev tsim mus rau kev xa khoom.
Txawm tias me me -batch pilots los yog loj- teev ntau lawm, peb muab tag nrho traceable, kawg -rau-kawg kev them nyiaj yug rau koj pcba bga los ua ke smt pcb tej yaam num, xyuas kom meej txhua BGA solder sib koom ua ke stands lub sij hawm thiab hnyav ib puag ncig.
Tiv tauj peb tam sim no:info@pcba-china.com- Cia peb xa cov khoom siab tshaj -tus qauv SMT BGA sib dhos uas ntxiv cov txheej txheem ruaj khov rau koj cov khoom ua tau zoo thiab kev ntseeg tau.
Cim npe nrov: smt bga sib dhos, Tuam Tshoj smt bga los ua ke manufacturers, lwm tus neeg, Hoobkas
