Pcb (Luam tawm cov board) Thiab PCBA (luam tawm Circuit Court sib dhos) yog ob lub ntsiab lus tseem ceeb hauv kev tsim khoom siv hauv tshuab hluav taws xob, nrog cov tub ntxhais kawm sib txawv thiab kev tsim khoom.
1, sib txawv ntawm cov ntsiab lus tseem ceeb
Pcb
Qhov tseem ceeb, nws yog lub rooj tswj hwm liab qab yam tsis muaj kev sib tw, xws li FR-4) thiab etched tooj liab ntawv ci ci, muab cov khoom sib txuas hluav taws xob.
Piv txwv li: Cov pawg board ntsuab ntawm cov motherboard ntawm lub xov tooj ntawm tes tsuas muaj cov xov tooj txawb nkaus xwb thiab siv tsis tau kev ywj pheej.
Pcba
Lub luag haujlwm ua haujlwm tsim los ntawm soldering Cheebtsam (xws li des resistors thiab chips) mus rau PCB siv SMT lossis DIP ntsaws - hauv cov txheej txheem.
Piv txwv li: Lub computer modelboard lossis tswj hwm tsheb tswj cov board uas tuaj yeem khiav thaum muaj hwj chim rau
2, kev sib piv ntawm cov nuj nqi thiab cov qauv
| qho loj dav | Pcb | Pcba |
| Lub Koom Haum Rau Lub Cev | Khoob board (tsis muaj cov khoom sib xyaw) | Tiav Ua tiav Cov Thawj Coj |
| Rooj mov | Rooj mov | Tsuas yog muab cov kev sib txuas hluav taws xob |
| Tus nqi | Qis dua (Substrate thiab Board ntau lawm nqi) | Siab dua (suav nrog cov khoom sib xyaw thiab cov nqi sib dhos) |
3, sib txawv hauv kev tsim cov txheej txheem
PCB tsim: Tsim → Board tsim (etched tooj liab ntawv ci) → drilling → Cov tshuaj xyuas nto → cov tshuaj ntsuam deg.
PCBA raug: PCB tsim kom muaj kev sib xyaw ua ke mounting → soldering (reflow soldering / yoj soldering) → kev sim ua haujlwm.
4, Kev Lag Luam Daim Ntawv Thov Kev Lag Luam
PCB: Siv rau kev txhim kho qauv qauv, cov kev sim tshuaj tivthaiv, lossis thaub qab subtrates.
PCBA: ncaj qha rau cov khoom lag luam xaus (xws li cov khoom siv hauv tsev, khoom siv kho mob)