Solder mast yog ib qho tseem ceeb heev ntawm PCB cov ntawv luam tawm Circuit Board, tsis muaj qhov tsis ntseeg tias Solder mask yuav pab tau los ua ke, txawm li cas los xij lwm yam uas siv lub npog ntsej muag ua rau?Peb yuav tsum paub ntau ntxiv txog cov npog ntsej muag nws tus kheej.
Lub npog ntsej muag yog dab tsi?
Solder mask lossis solder stop mask los yog solder resist yog ib txheej nyias lacquer zoo li cov polymer uas feem ntau yog siv rau cov kab tooj liab ntawm lub rooj tsav xwm luam tawm (PCB) rau kev tiv thaiv oxidation thiab tiv thaiv cov txuas txuas ntawm kev sib txuas ntawm qhov sib txuas sib txuas. .
Ib tug solder choj yog ib qho kev sib txuas hluav taws xob uas tsis xav tau ntawm ob tus neeg xyuas pib los ntawm kev siv lub tshuab me me ntawm solder.
PCBs siv lub qhov ncauj qhov ntswg los tiv thaiv qhov no tshwm sim.
Lub npog ntsej muag tsis yog ib txwm siv rau kev sib koom tes ntawm tes, tab sis yog qhov tseem ceeb rau cov laug cam uas tau tsim los ntawm kev siv cov txheej txheem reflow lossis solder da dej.
Thaum thov, qhib yuav tsum tau ua nyob rau hauv lub qhov ncauj qhov ntswg nyob qhov twg cov khoom yog soldered, uas yog ua tiav siv photolithography.
SLub npog ntsej muag laus yog ib txwm ntsuab tab sis tam sim no muaj ntau yam xim.
Cov txheej txheem ntawm solder daim npog qhov ncauj
Cov txheej txheem ntawm daim npog ntsej muag muaj ntau cov kauj ruam.
Tom qab ib kauj ruam ua ntej tu, nyob rau hauv uas cov luam ntawv Circuit Court boards yog degreased thiab tooj liab nto yog mechanically los yog chemically ntxhib kawg, solder daim npog qhov ncauj yog thov.
Muaj ntau daim ntawv thov xws li cov ntaub thaiv npog, tshuaj ntsuam luam ntawv lossis tshuaj tsuag txheej muaj.
Tom qab cov PCBs tau coated nrog solder daim npog qhov ncauj, cov kuab tshuaj yuav tsum tau flashed-off nyob rau hauv ib tug tack-drying kauj ruam.
Cov kauj ruam tom ntej hauv kev ua ntu zus yog raug.Txhawm rau txhim kho daim npog ntsej muag, kev kos duab yog siv.Cov laug cam tau nthuav tawm nrog lub teeb pom kev zoo 360 nm.
Cov chaw raug yuav polymerize thaum cov cheeb tsam npog yuav nyob twj ywm monomer.
Nyob rau hauv txoj kev loj hlob, cov cheeb tsam raug resistant, thiab cov chaw unexposed (monomer) yuav raug ntxuav tawm.
Qhov kawg curing yog ua nyob rau hauv ib tug batch los yog qhov cub.Tom qab kev kho zaum kawg, kev kho UV ntxiv yuav xav tau los ua kom cov khoom siv kho tshuab thiab tshuaj lom neeg ntawm lub npog ntsej muag.
Lub luag haujlwm tseem ceeb ntawm solder mask:
Yog li dab tsi yog lub luag haujlwm ntawm Solder Mask?
Xaiv ob ntawm cov npe:
1. Kev tiv thaiv oxidation.
2. Kev tiv thaiv los ntawm tshav kub.
3. Kev tiv thaiv los ntawm kev sib tsoo ntawm kev sib tsoo.
4. Kev tiv thaiv los ntawm electrostatic paug.
5. Kev tiv thaiv los ntawm cov pa tawm ntawm qhov tam sim no.
6. Kev tiv thaiv plua plav.
Tsuas yog cov haujlwm tseem ceeb saum toj no, kuj tseem muaj qee qhov kev thov.Yog tias tseem muaj lus nug ntxiv txog lub npog ntsej muag, Thov nrog cov kws tshaj lij hauv PHILIFAST.
Post lub sij hawm: Jun-22-2021