BGA Sib Dhos yog dab tsi?
Kev sib dhos BGA yog hais txog cov txheej txheem ntawm kev teeb tsa Ball Grid Array (BGA) rau ntawm PCB siv cov txheej txheem reflow soldering. BGA yog ib qho khoom siv uas tau teeb tsa saum npoo av uas siv cov pob solder rau kev sib txuas hluav taws xob. Thaum lub rooj tsavxwm circuit hla dhau lub qhov cub reflow solder, cov pob solder no yaj, tsim cov kev sib txuas hluav taws xob.
Kev txhais ntawm BGA
BGA: Pob Grid Array
Kev faib tawm ntawm BGA
PBGA: yasBGA yas encapsulated BGA
CBGA: BGA rau cov khoom siv ceramic BGA
CCGA: Ceramic kem BGA ceramic pillar
BGA ntim rau hauv cov duab
TBGA: daim kab xev BGA nrog lub pob grid kem
Cov kauj ruam ntawm BGA Sib Dhos
Cov txheej txheem sib dhos BGA feem ntau muaj cov kauj ruam hauv qab no:
Kev Npaj PCB: PCB yog npaj los ntawm kev siv cov tshuaj nplaum solder rau ntawm cov pads uas BGA yuav raug mounted. Cov tshuaj nplaum solder yog ib qho sib xyaw ntawm cov khoom sib xyaw solder thiab flux, uas pab nrog cov txheej txheem soldering.
Kev Tso BGAs: Cov BGAs, uas muaj cov chip integrated circuit nrog cov pob solder rau hauv qab, raug muab tso rau ntawm PCB uas tau npaj tseg. Qhov no feem ntau yog ua los ntawm kev siv cov tshuab pick-and-place lossis lwm yam khoom siv sib dhos.
Kev Siv Tshuab Solder Rov Qab: Cov PCB uas tau sib dhos ua ke nrog cov BGA uas tau muab tso rau hauv ces raug xa mus rau hauv lub qhov cub reflow. Lub qhov cub reflow ua kom cov PCB sov rau qhov kub tshwj xeeb uas yaj cov nplaum solder, ua rau cov pob solder ntawm BGA rov qab thiab tsim kev sib txuas hluav taws xob nrog cov PCB pads.
Txias thiab Tshuaj Xyuas: Tom qab cov txheej txheem rov ua dua cov hlau nplaum, PCB raug txias kom khov kho cov pob qij txha hlau. Tom qab ntawd nws raug tshuaj xyuas seb puas muaj qhov tsis zoo, xws li tsis sib haum, luv luv, lossis qhib kev sib txuas. Kev tshuaj xyuas qhov muag tsis siv neeg (AOI) lossis kev tshuaj xyuas X-ray yuav siv tau rau lub hom phiaj no.
Cov Txheej Txheem Thib Ob: Nyob ntawm qhov yuav tsum tau ua tshwj xeeb, cov txheej txheem ntxiv xws li kev ntxuav, kev sim, thiab kev txheej txheem conformal yuav raug ua tom qab BGA sib dhos kom ntseeg tau tias muaj kev ntseeg siab thiab zoo ntawm cov khoom tiav.
Cov txiaj ntsig ntawm BGA Sib Dhos
BGA Pob Grid Array
EBGA 680L
LBGA 160L
PBGA 217L Yas Pob Grid Array
SBGA 192L
TSBGA 680L
CLCC
CNR
CPGA Ceramic Pin Grid Array
DIP Dual Inline Pob
DIP-tab
FBGA
1. Me me hneev taw
Cov ntim BGA muaj cov chip, cov khoom sib txuas, cov substrate nyias nyias, thiab lub hau encapsulation. Muaj ob peb yam khoom uas raug nthuav tawm thiab lub pob muaj tsawg kawg nkaus ntawm cov pins. Qhov siab tag nrho ntawm cov chip ntawm PCB tuaj yeem qis li 1.2 millimeters.
2. Kev Ruaj Khob
BGA ntim khoom muaj zog heev. Tsis zoo li QFP nrog 20mil suab, BGA tsis muaj cov pins uas tuaj yeem khoov lossis tawg. Feem ntau, kev tshem tawm BGA yuav tsum tau siv BGA rework chaw nres tsheb ntawm qhov kub siab.
3. Txo cov kab mob parasitic inductance thiab capacitance
Nrog cov pins luv luv thiab qhov siab sib dhos qis, BGA ntim khoom qhia txog qhov tsis tshua muaj parasitic inductance thiab capacitance, ua rau muaj kev ua haujlwm hluav taws xob zoo heev.
4. Ntau qhov chaw cia khoom ntxiv
Piv rau lwm hom ntim khoom, BGA ntim khoom tsuas muaj ib feem peb ntawm qhov ntim thiab kwv yees li 1.2 npaug ntawm thaj chaw chip. Kev nco thiab cov khoom siv ua haujlwm siv BGA ntim khoom tuaj yeem ua tiav ntau dua 2.1 npaug ntawm qhov muaj peev xwm khaws cia thiab ceev ua haujlwm.
5. Kev ruaj khov siab
Vim yog qhov txuas ntxiv ntawm cov pins los ntawm qhov chaw nruab nrab ntawm lub chip hauv BGA ntim, txoj kev xa mus rau ntau yam teeb liab tau luv dua, txo qhov teeb liab attenuation thiab txhim kho qhov teb ceev thiab kev cuam tshuam. Qhov no ua rau kom muaj kev ruaj khov ntawm cov khoom.
6. Kev kub hnyiab zoo
BGA muaj kev ua haujlwm zoo heev ntawm kev tshem tawm cua sov, nrog rau qhov kub ntawm lub chip ze rau qhov kub ib puag ncig thaum lub sijhawm ua haujlwm.
7. Yooj yim rau kev ua haujlwm dua
Cov pins ntawm BGA ntim khoom tau teeb tsa zoo nkauj rau hauv qab, ua rau nws yooj yim nrhiav cov chaw puas tsuaj rau kev tshem tawm. Qhov no ua rau kev rov ua dua ntawm BGA chips yooj yim dua.
8. Kev zam ntawm kev cuam tshuam hluav taws xob
Kev ntim khoom BGA tso cai rau kev tso ntau lub zog fais fab thiab av pins hauv nruab nrab, nrog rau I/O pins tso rau ntawm ntug. Kev npaj ua ntej tuaj yeem ua tiav ntawm BGA substrate, zam kev sib txuas lus tsis sib haum xeeb ntawm I/O pins.
RichPCBA BGA Sib Dhos Muaj Peev Xwm
RICHPCBA yog lub chaw tsim khoom thoob ntiaj teb rau kev tsim PCB thiab kev sib dhos PCB. Kev pabcuam sib dhos BGA yog ib qho ntawm ntau hom kev pabcuam uas peb muab. PCBWay tuaj yeem muab kev sib dhos BGA zoo thiab pheej yig rau koj cov PCBs. Qhov tsawg kawg nkaus rau kev sib dhos BGA uas peb tuaj yeem ua tau yog 0.25mm 0.3mm.
Ua ib lub tuam txhab muab kev pabcuam PCB nrog 20 xyoo ntawm kev paub hauv kev tsim khoom PCB, kev tsim khoom thiab kev sib dhos, RICHPCBA muaj keeb kwm nplua nuj. Yog tias muaj kev thov rau BGA sib dhos, thov koj xav tiv tauj peb!