Cov txheej txheem luam tawm Circuit Board (PCB) kev tsim khoom yog ib txoj haujlwm nyuaj thiab meej nrog ntau cov kauj ruam thiab cov txheej txheem. Rau cov ntaub ntawv tseem ceeb txog cov khoom no, thov tso koj cov ntaub ntawv tiv tauj, thiab peb yuav rov qab rau koj sai li sai tau.
Cov txheej txheem tsim khoom ntxaws tau piav qhia hauv qab no:
Circuit Diagram Design: Thawj kauj ruam yog tsim lub Circuit Court schematic thiab siv cov software tshaj lij (xws li Altium Designer, Cadence, thiab lwm yam) los hloov nws mus rau hauv PCB layout. Cov theem no yuav tsum tau ua tib zoo xav txog kev ua haujlwm ntawm Circuit Court, qhov chaw tso khoom, thiab kev ua kom zoo dua.
Kev npaj substrate: Xaiv cov khoom siv hauv qab uas tsim nyog (xws li FR4, Rogers, PTFE, lossis ceramic) thiab txiav nws mus rau qhov loj me raws li cov qauv tsim. Qhov saum npoo ntawm substrate yuav tsum tau muab ntxuav kom huv si kom paub tseeb tias nws tsis muaj plua plav lossis roj.
Hloov Cov Qauv: Hloov cov qauv tsim Circuit Court mus rau lub substrate siv photolithography los yog tshuaj ntsuam luam ntawv hom. Photolithography siv cov yeeb yaj kiab photosensitive thiab UV raug, qhov kev tshuaj ntsuam luam ntawv suav nrog kev siv tus cwj mem ncaj qha.
Etching: Cov ntawv ci tooj liab uas tsis muaj kev tiv thaiv raug tshem tawm los ntawm kev siv tshuaj etchant (xws li ferric chloride los yog ammonia tov), tawm hauv cov qauv Circuit Court uas xav tau. etching lub sij hawm thiab kub yuav tsum nruj me ntsis tswj kom tsis txhob dhau -etching los yog nyob rau hauv -etching.
Drilling: Lub tshuab CNC drilling yog siv los laum cov ntsiab lus mounting qhov thiab vias mus rau hauv lub rooj tsavxwm. Qhov diameters feem ntau yog nyob ntawm 0.1 hli mus rau 6 hli thiab raug xaiv raws li cov khoom siv tus pin qhov ntev thiab cov kev cai hauv Circuit Court.
Solder Mask Printing: Ib txheej ntawm daim npog ntsej muag (feem ntau yog ntsuab lossis dub) yog luam tawm rau saum npoo ntawm lub rooj tsav xwm Circuit Court los tiv thaiv lub circuitry ntawm oxidation thiab luv circuits. Lub npog ntsej muag yuav tsum kho los ntawm ultraviolet (UV) lub teeb.
Legend Printing: Cov cim qhia thiab cov cim (dawb lossis xim dub) tau luam tawm ntawm lub rooj tsavxwm kom yooj yim rau kev sib dhos thiab tu.
Surface Finish: Ib txheej txheej txheej txheej saum npoo av- xws li HASL (Hot Air Solder Leveling), ENIG (Electroless Nickel Immersion Gold), lossis OSP (Organic Solderability Preservative)- yog xaiv raws li qhov yuav tsum tau ua los txhim kho cov khoom siv thiab corrosion kuj.
Kev Ntsuas thiab Kev Ntsuas: Kev sib txuas ntawm Circuit Court thiab tsis muaj luv luv Circuit Court raug txheeb xyuas los ntawm kev sojntsuam ya los yog AOI (Automated Optical Inspection). High-frequency boards kuj raug kuaj impedance thiab ntsuas kev ncaj ncees.
Depaneling thiab Ntim: Lub vaj huam sib luag loj yog txiav rau hauv ib tus PCBs, uas tom qab ntawd muab tso rau hauv cov khoom siv tiv thaiv- zoo li qub los tiv thaiv kev puas tsuaj thaum caij tsheb npav.
Qhov Metallization: Ib txheej ntawm tooj liab tso rau hauv cov phab ntsa sab hauv ntawm lub qhov -txawm los ntawm cov txheej txheem chemical plating lossis electroplating- los tsim kev sib txuas hluav taws xob ntawm cov txheej txheem. Cov tooj liab plating thickness feem ntau yog 20 mus rau 30 microns.
