印制電路板即常說的PCB，PCB裝(zhuang)上元(yuan)(yuan)(yuan)器件(jian)(jian)(jian)(jian)就稱(cheng)為電路板組(zu)(zu)件(jian)(jian)(jian)(jian)即PCBA，板上的元(yuan)(yuan)(yuan)器件(jian)(jian)(jian)(jian)可以是SMT（表面(mian)(mian)貼(tie)裝(zhuang)）元(yuan)(yuan)(yuan)件(jian)(jian)(jian)(jian)，插(cha)(cha)件(jian)(jian)(jian)(jian)元(yuan)(yuan)(yuan)件(jian)(jian)(jian)(jian)，壓件(jian)(jian)(jian)(jian)元(yuan)(yuan)(yuan)件(jian)(jian)(jian)(jian)或組(zu)(zu)裝(zhuang)件(jian)(jian)(jian)(jian)。兩面(mian)(mian)有SMT元(yuan)(yuan)(yuan)件(jian)(jian)(jian)(jian)的PCBA，為了(le)避免SMT元(yuan)(yuan)(yuan)件(jian)(jian)(jian)(jian)波(bo)峰焊的錫波(bo)中掉(diao)落，在(zai)插(cha)(cha)件(jian)(jian)(jian)(jian)前(qian)需要將PCB板固定在(zai)載具(ju)上。除(chu)了(le)對(dui)板底SMT元(yuan)(yuan)(yuan)件(jian)(jian)(jian)(jian)的保(bao)護考量，一些板面(mian)(mian)的元(yuan)(yuan)(yuan)件(jian)(jian)(jian)(jian)如(ru)果對(dui)溫度(du)比較敏感，又靠近插(cha)(cha)件(jian)(jian)(jian)(jian)元(yuan)(yuan)(yuan)件(jian)(jian)(jian)(jian)，也(ye)可以通過優(you)化載具(ju)，減(jian)少波(bo)峰焊的熱沖(chong)擊對(dui)此元(yuan)(yuan)(yuan)件(jian)(jian)(jian)(jian)的損害(hai)。

貼(tie)(tie)(tie)片(pian)加(jia)工(gong)(gong)要用到一(yi)些SMT設(she)備，比(bi)如(ru)印(yin)刷機、貼(tie)(tie)(tie)片(pian)機、回流(liu)焊(han)這些設(she)備，以PCB為基礎，在PCB上貼(tie)(tie)(tie)裝(zhuang)特定的(de)物料(liao)，SMT加(jia)工(gong)(gong)價格，比(bi)如(ru)IC元件或(huo)其他的(de)一(yi)些物料(liao)這樣的(de)過(guo)程。SMT基本工(gong)(gong)藝流(liu)程有絲(si)印(yin)、貼(tie)(tie)(tie)裝(zhuang)、焊(han)接(jie)、清(qing)洗、檢測(ce)和維修。現如(ru)今，隨(sui)著(zhu)科(ke)技(ji)不斷發展進步，SMT貼(tie)(tie)(tie)片(pian)加(jia)工(gong)(gong)技(ji)術也(ye)(ye)日漸成熟，生產的(de)電子產品也(ye)(ye)越(yue)(yue)來越(yue)(yue)輕便(bian)，SMT加(jia)工(gong)(gong)焊(han)接(jie)，功(gong)能也(ye)(ye)越(yue)(yue)來越(yue)(yue)齊(qi)全。貼(tie)(tie)(tie)片(pian)加(jia)工(gong)(gong)存(cun)在著(zhu)很多種優點，比(bi)如(ru)說生產的(de)電子產品體積(ji)小，SMT加(jia)工(gong)(gong)廠商(shang)，其貼(tie)(tie)(tie)片(pian)元件的(de)質(zhi)(zhi)量(liang)(liang)只(zhi)具有傳統貼(tie)(tie)(tie)片(pian)元件質(zhi)(zhi)量(liang)(liang)的(de)10%。

SMT來(lai)料(liao)加(jia)工(gong)是(shi)(shi)指電子(zi)(zi)委托方因(yin)自身(shen)設備和技術經驗的(de)不(bu)足等原因(yin)，沈陽SMT加(jia)工(gong)，提供物料(liao)至(zhi)電子(zi)(zi)加(jia)工(gong)方，進(jin)行PCB加(jia)工(gong)生產(chan)。SMT加(jia)工(gong)周期(qi)一般在3天左右。SMT來(lai)料(liao)加(jia)工(gong)因(yin)不(bu)需加(jia)工(gong)進(jin)行物料(liao)采(cai)購(gou)，因(yin)此(ci)，其(qi)加(jia)工(gong)費用主要是(shi)(shi)由焊(han)點多少(shao)及PCB板的(de)復(fu)雜難度(du)來(lai)決定。過小批量(liang)生產(chan)則會收取一定的(de)工(gong)程(cheng)費用。SMT來(lai)料(liao)加(jia)工(gong)雖(sui)是(shi)(shi)PCBA的(de)基(ji)礎加(jia)工(gong)，但是(shi)(shi)其(qi)工(gong)藝要求還是(shi)(shi)比較嚴(yan)格的(de)，有能力(li)的(de)電子(zi)(zi)加(jia)工(gong)廠(chang)家可以很(hen)好的(de)確保其(qi)質(zhi)量(liang)。