1. PCB tsis muaj txheej txheem ntug, txheej txheem qhov, tsis tuaj yeem ua tau raws li SMT cov khoom siv clamping, uas txhais tau hais tias nws tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua ntawm ntau lawm.
2. PCB zoo li neeg txawv teb chaws los yog loj heev, me me dhau, tib yam tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua ntawm cov khoom siv clamping.
3. PCB, FQFP pads nyob ib ncig ntawm tsis muaj qhov muag pom qhov cim (Mark) lossis Mark taw tes tsis yog tus qauv, xws li Mark taw tes nyob ib puag ncig ntawm cov yeeb yaj kiab tiv thaiv zaj duab xis, lossis loj dhau, me dhau, ua rau Mark point duab sib piv me me dhau, lub tshuab nquag tswb tsis tuaj yeem ua haujlwm zoo.
4. Lub ncoo qauv loj tsis yog lawm, xws li lub ncoo qhov sib nrug ntawm cov khoom siv nti loj dhau, me me, lub ncoo tsis sib haum, ua rau muaj ntau yam tsis xws luag tom qab vuam ntawm cov chips, xws li skewed, sawv monument. .
5. Cov ntaub qhwv nrog lub qhov ntau dhau yuav ua rau lub qhov muag melted los ntawm lub qhov mus rau hauv qab, ua rau me ntsis solder solder.
6. Chip Cheebtsam ncoo qhov loj me tsis sib luag, tshwj xeeb tshaj yog nrog cov kab hauv av, hla txoj kab ntawm ib feem ntawm kev siv lub ncoo, yog li ntawdreflow qhov cubsoldering nti Cheebtsam ntawm ob qhov kawg ntawm lub ncoo tsis sib xws thaum tshav kub kub, solder muab tshuaj txhuam tau melted thiab tshwm sim los ntawm lub monument defects.
7. IC ncoo tsim tsis raug, FQFP nyob rau hauv lub ncoo yog dav dhau, ua rau tus choj tom qab vuam txawm, los yog lub ncoo tom qab ntug yog luv dhau los ntawm lub zog tsis txaus tom qab vuam.
8. IC pads nruab nrab ntawm kev sib txuas ntawm cov xov hlau uas muab tso rau hauv qhov chaw, tsis haum rau SMA tom qab soldering tshuaj xyuas.
9. Wave soldering tshuabIC tsis tsim cov ntaub qhwv ntsej muag, ua rau kev sib txuas tom qab soldering.
10. PCB thickness los yog PCB nyob rau hauv IC faib yog tsis tsim nyog, lub PCB deformation tom qab vuam.
11. Cov qauv ntsuas qhov ntsuas tsis yog tus qauv, yog li ICT tsis tuaj yeem ua haujlwm.
12. Qhov sib txawv ntawm SMDs tsis raug, thiab cov teeb meem tshwm sim hauv kev kho tom qab.
13. Lub solder tiv thaiv txheej thiab cov cim daim ntawv qhia tsis yog tus qauv, thiab cov solder tiv thaiv txheej thiab cov cim daim ntawv qhia poob rau ntawm cov ntaub qhwv uas ua rau tsis muaj tseeb soldering los yog hluav taws xob disconnection.
14. Kev tsim tsis tsim nyog ntawm lub rooj sib tw splicing, xws li kev ua haujlwm tsis zoo ntawm V-slots, ua rau PCB deformation tom qab reflow.
Qhov yuam kev saum toj no tuaj yeem tshwm sim hauv ib lossis ntau dua ntawm cov khoom tsim tsis zoo, ua rau muaj kev sib txawv ntawm qhov cuam tshuam rau qhov zoo ntawm cov khoom siv.Cov neeg tsim khoom tsis paub txaus txog cov txheej txheem SMT, tshwj xeeb tshaj yog cov khoom siv hauv reflow soldering muaj cov txheej txheem "dynamic" tsis nkag siab yog ib qho laj thawj rau kev tsim tsis zoo.Nyob rau hauv tas li ntawd, tus tsim thaum ntxov ignored cov txheej txheem cov neeg ua hauj lwm koom nyob rau hauv lub tsis muaj lub enterprise tus tsim specifications rau manufacturability, kuj yog ua rau phem tsim.
Post lub sij hawm: Jan-20-2022