PCB (裸板) thiab PCBA (组装后的电路板)的区别是什么?
PCB (Tebchaws Asmeskas) Cov Khoom Siv Hluav Taws Xob Hluav Taws Xob绝缘基板，导电铜箔线路，过孔及阻焊层等构成，是电子元件的"Tshaj Tawm"Cov. , 外观上呈现为带有铜箔线路图案的硬或软板,不具备完整的电路功能.
PCBA (印刷电路板组件) 则是在 PCB 基础上完成元件焊接后的成品, SMT (表面贴装)戀最THT (通孔插装技术) los ntawm PCB上.此时的电路板已形成完整的电路系统, 能够实现特定的电气功能, 如信电源管理等, 是各类电子设备的核心功能部件是 "空板", PCBA 是 "装好零件的成品板", 前者是后者的基础, 后者是前者的功能化延伸.
Dab tsi yog qhov txawv ntawm PCB (dawb lub rooj tsavxwm) thiab PCBA (them pawg thawj coj saib xyuas)?
PCB (Bare Board) yog hais txog lub rooj tsav xwm luam tawm uas tsis muaj cov khoom siv hluav taws xob tau teeb tsa. Nws tsuas yog tsim los ntawm cov txheej txheem insulating, cov kab hluav taws xob tooj liab, vias, daim npog ntsej muag, thiab lwm yam. Nws lub luag haujlwm tseem ceeb yog muab txoj hauv kev txuas hluav taws xob thiab kev txhawb nqa txhua yam rau cov khoom txuas ntxiv. Pom zoo li lub rooj tsavxwm nruj lossis hloov tau yooj yim nrog cov qauv tooj liab, nws tsis muaj qhov ua tiav hauv Circuit Court.
PCBA (Printed Circuit Board Assembly), ntawm qhov tod tes, yog cov khoom tiav tom qab cov khoom siv tau raug xa mus rau PCB. Los ntawm SMT (Surface Mount Technology) los yog THT (Los ntawm -Lub Tshuab Tshuab), cov khoom siv hluav taws xob xws li resistors, capacitors, thiab chips yog tsau thiab hluav taws xob txuas nrog PCB. Nyob rau ntawm lub sijhawm no, lub rooj tsav xwm hauv Circuit Court tsim ib qho kev ua tiav Circuit Court uas muaj peev xwm ua tiav cov haujlwm tshwj xeeb ntawm hluav taws xob, xws li kev teeb tsa thiab kev tswj fais fab. Nws yog lub luag haujlwm tseem ceeb ntawm ntau yam khoom siv hluav taws xob. Yooj yim muab tso, PCB yog "lub rooj tsavxwm khoob," thaum PCBA yog "cov khoom tiav tiav nrog cov khoom nruab." Qhov qub yog lub hauv paus ntawm lub tom kawg, thiab tom kawg yog qhov kev ua haujlwm txuas ntxiv ntawm qhov qub.
