Yuav ua li cas thiaj paub qhov tsis pom ntawm PCBA kom meej?
Cov Qauv Tshuaj Xyuas X-RAY
1. BGA cov pob qij txha tsis muaj qhov sib txawv:
Cov txheej txheem txiav txim siab: txais tau thaum qhov offset tsawg dua ib nrab ntawm qhov ncig ntawm lub solder pad; Thaum qhov offset loj dua lossis sib npaug rau ib nrab ntawm qhov ncig ntawm lub solder pad, nws yuav raug tsis lees txais.
2. Cov pob qij txha BGA tsis muaj luv luv:
Cov txheej txheem txiav txim siab: Yog tias tsis muaj kev sib txuas tin ntawm cov pob qij txha solder, nws yog qhov lees txais; Thaum muaj kev sib txuas solder ntawm cov pob qij txha solder, nws yuav tsum raug tsis lees txais.
3. BGA cov pob qij txha tsis muaj qhov khoob:
Cov txheej txheem txiav txim siab: Thaj chaw khoob tsawg dua 20% ntawm tag nrho thaj chaw ntawm lub pob qij txha solder yog qhov lees txais; Yog tias thaj chaw khoob loj dua lossis sib npaug rau 20% ntawm tag nrho thaj chaw ntawm lub pob qij txha solder, nws yuav raug tsis lees txais.
4. Tsis muaj qhov tsis txaus ntawm tin hauv BGA solder joints:
Cov txheej txheem txiav txim siab: Txais yuav thaum txhua lub pob tin qhia qhov loj me, sib xws thiab sib xws; Yog tias qhov loj ntawm lub pob tin me dua piv rau lwm cov pob tin nyob ib puag ncig nws, nws yuav tsum raug tsis lees txais.
5. Tus qauv tshuaj xyuas rau lub hauv av E-PAD ntawm QFP / QFN chav kawm chips rau qee cov khoom yog tias thaj chaw tin yuav tsum ntau dua 60% ntawm tag nrho thaj chaw (plaub daim phiaj sib xyaw ua ke qhia tias zoo soldering), thiab qhov piv txwv piv txwv yog 20%.
1. Lub hom phiaj sim: PCBA boards nrog BGA/LGA thiab cov khoom siv grounding pad;
2. Kev sim zaus:
① Tom qab kev hloov pauv, cov neeg ua haujlwm tshaj lij yuav xyuas kom meej tias thawj lub solder paste board thiab BGA nto mount puas muaj qhov tsis zoo, thiab tom qab ntawd txuas ntxiv mus dhau lub chamber tom qab paub tseeb tias tsis muaj teeb meem;
② Cov neeg ua haujlwm tshaj lij paub tseeb tias puas muaj teeb meem nrog BGA soldering ntawm thawj lub solder paste board tom qab dhau los ntawm lub chamber, thiab tom qab ntawd muab tso rau hauv kev tsim khoom yog tias tsis muaj teeb meem;
③ Thaum lub sijhawm tsim khoom ib txwm muaj, cov neeg ua haujlwm raug xaiv tsa yog lub luag haujlwm rau kev sim, thiab yog tias kev txiav txim ntawm ≤ 100pcs, 100% yuav tsum tau kuaj tag nrho; 101-1000pcs yuav tsum tau kuaj rau 30%, kev txiav txim ntau dua 1001pcs yuav tsum tau kuaj rau 20%;
④ Thaum lub sijhawm tsim khoom ib txwm muaj, IPQC ua cov kev kuaj kuaj ntawm 2 daim loj hauv ib teev;
⑤ Cov khoom yuav tsum tau kuaj xyuas tag nrho 100% thiab cov duab yuav tsum tau khaws cia 100%.
3. Yog tias muaj qhov tsis zoo, cov duab yuav tsum tau khaws cia, thiab tus qauv BOM, tus lej barcode thiab cov txiaj ntsig ntawm cov khoom kuaj yuav tsum tau sau tseg rau hauv Daim Ntawv Teev Npe X-Ray. Ntxiv cov duab soldering ntawm QFP thiab QFN grounding pads, thiab txuag tau 100% ntawm cov duab.
4. Yog tias muaj qhov tsis zoo thaum lub sijhawm kuaj, yuav tsum tau tshaj tawm tam sim ntawd rau tus thawj coj thiab tus kws ua haujlwm kom paub meej.
Kws Tshaj Lij X-ray Kev Tshuaj Xyuas Txawj Ntse Hauv Kev Lag Luam
Lub tshuab X-RAY feem ntau muaj xya ntu: qhov chaw xoo hluav taws xob me me, chav thaij duab, lub tshuab ua duab hauv computer, lub tshuab ua khoom siv, lub tshuab tswj hluav taws xob, lub tshuab tiv thaiv kev nyab xeeb thiab lub tshuab ceeb toom. Nws koom ua ke kev sim tsis puas tsuaj, thev naus laus zis software computer, kev nrhiav duab & thev naus laus zis ua duab thiab thev naus laus zis kis tau, npog plaub qhov chaw tseem ceeb ntawm kev ua duab kho qhov muag, tshuab, hluav taws xob thiab digital. Los ntawm qhov sib txawv ntawm kev nqus ntawm X-rays los ntawm cov ntaub ntawv sib txawv, cov qauv sab hauv ntawm cov khoom raug thaij duab thiab kev tshawb pom qhov tsis zoo sab hauv. Daim duab tshawb pom ntawm cov khoom tuaj yeem pom tau tiag tiag los txiav txim siab seb puas muaj qhov tsis zoo, hom tsis zoo thiab cov qib kev lag luam hauv cov khoom. Tib lub sijhawm, lub tshuab ua duab hauv computer siv los khaws thiab ua cov duab los txhim kho qhov tseeb ntawm cov duab thiab xyuas kom meej qhov tseeb ntawm kev ntsuam xyuas. Nws tuaj yeem ntsuas cov npuas ntawm cov khoom siv hluav taws xob ntim xws li BGA thiab QFN, thiab txhawb nqa kev ntsuas geometric xws li qhov deb, lub kaum sab xis, txoj kab uas hla, thiab polygon. Nws tuaj yeem ua tiav ntau qhov chaw nrhiav tau, tso cai rau cov khoom tawm hauv lub Hoobkas yam tsis muaj qhov tsis zoo.
