焊(han)點吸收光能轉(zhuan)變成熱能，加(jia)熱焊(han)接部位(wei)，使焊(han)料(liao)熔化，3，種類:固體YAG(乙鋁石榴石)激光器(qi)，常用知識1.一般來(lai)說，SMT車(che)間規定的溫度為23±7℃，2.錫(xi)(xi)膏印刷(shua)時，所(suo)需準(zhun)備(bei)的材(cai)料(liao)及工具:錫(xi)(xi)膏，SMT電路板(ban)加(jia)工廠，鋼板(ban)。

避免板子移位，快(kuai)速冷(leng)卻(que)組件，以限制敏感元件暴露于高溫下(xia)，然而，應考慮到侵蝕性冷(leng)卻(que)系統(tong)對元件和焊點的(de)(de)熱沖(chong)擊的(de)(de)危害性，SMT電路板加工廠家，一個(ge)控制良好的(de)(de)[柔和穩定的(de)(de)'，強(qiang)制氣體冷(leng)卻(que)系統(tong)應不(bu)會(hui)損壞多(duo)數組件，使(shi)用這個(ge)系統(tong)的(de)(de)原(yuan)因有兩(liang)個(ge):能夠(gou)快(kuai)速處理(li)板。

電路板散熱方式

1、高發熱器件(jian)加(jia)散熱器、導熱板

當(dang)PCB中有少(shao)數器(qi)件(jian)(jian)(jian)發(fa)熱(re)(re)(re)(re)(re)量(liang)較大時(shi)（少(shao)于(yu)(yu)3個(ge)）時(shi)，沈陽電路板加工(gong)，可在發(fa)熱(re)(re)(re)(re)(re)器(qi)件(jian)(jian)(jian)上(shang)加散熱(re)(re)(re)(re)(re)器(qi)或導熱(re)(re)(re)(re)(re)管，當(dang)溫(wen)度還(huan)不能降下來時(shi)，可采(cai)用帶風扇的(de)(de)散熱(re)(re)(re)(re)(re)器(qi)，以增強散熱(re)(re)(re)(re)(re)效(xiao)果(guo)。當(dang)發(fa)熱(re)(re)(re)(re)(re)器(qi)件(jian)(jian)(jian)量(liang)較多時(shi)（多于(yu)(yu)3個(ge)），可采(cai)用大的(de)(de)散熱(re)(re)(re)(re)(re)罩（板），它(ta)是按PCB板上(shang)發(fa)熱(re)(re)(re)(re)(re)器(qi)件(jian)(jian)(jian)的(de)(de)位置和高低(di)而定(ding)制(zhi)的(de)(de)散熱(re)(re)(re)(re)(re)器(qi)或是在一個(ge)大的(de)(de)平板散熱(re)(re)(re)(re)(re)器(qi)上(shang)摳出(chu)不同的(de)(de)元(yuan)件(jian)(jian)(jian)高低(di)位置。將(jiang)散熱(re)(re)(re)(re)(re)罩整(zheng)體(ti)扣在元(yuan)件(jian)(jian)(jian)面上(shang)，與每個(ge)元(yuan)件(jian)(jian)(jian)接觸而散熱(re)(re)(re)(re)(re)。但(dan)由于(yu)(yu)元(yuan)器(qi)件(jian)(jian)(jian)裝焊時(shi)高低(di)一致性差，散熱(re)(re)(re)(re)(re)效(xiao)果(guo)并不好。通(tong)常在元(yuan)器(qi)件(jian)(jian)(jian)面上(shang)加柔(rou)軟的(de)(de)熱(re)(re)(re)(re)(re)相(xiang)變(bian)導熱(re)(re)(re)(re)(re)墊來改善散熱(re)(re)(re)(re)(re)效(xiao)果(guo)。

電(dian)(dian)(dian)路(lu)(lu)板(ban)(ban)的名(ming)稱(cheng)有：線(xian)路(lu)(lu)板(ban)(ban)，PCB板(ban)(ban)，鋁基板(ban)(ban)，高(gao)頻板(ban)(ban)，厚銅(tong)板(ban)(ban)，阻抗板(ban)(ban)，超薄(bo)線(xian)路(lu)(lu)板(ban)(ban)，超薄(bo)電(dian)(dian)(dian)路(lu)(lu)板(ban)(ban)，印刷（銅(tong)刻蝕技術）電(dian)(dian)(dian)路(lu)(lu)板(ban)(ban)等。電(dian)(dian)(dian)路(lu)(lu)板(ban)(ban)使電(dian)(dian)(dian)路(lu)(lu)迷(mi)你化(hua)(hua)、直觀化(hua)(hua)，對(dui)于固定電(dian)(dian)(dian)路(lu)(lu)的批量生產和優化(hua)(hua)用電(dian)(dian)(dian)器(qi)布局(ju)起重要作(zuo)用。電(dian)(dian)(dian)路(lu)(lu)板(ban)(ban)可稱(cheng)為印刷線(xian)路(lu)(lu)板(ban)(ban)或印刷電(dian)(dian)(dian)路(lu)(lu)板(ban)(ban)，英文名(ming)稱(cheng)為（Printed Circuit Board）PCB。

線路板(ban)(ban)(ban)(ban)按層數(shu)來分(fen)的(de)話分(fen)為(wei)單(dan)(dan)面(mian)板(ban)(ban)(ban)(ban)，SMT電路板(ban)(ban)(ban)(ban)加工價(jia)格，雙(shuang)面(mian)板(ban)(ban)(ban)(ban)，和多(duo)層線路板(ban)(ban)(ban)(ban)三個大的(de)分(fen)類(lei)。首先是單(dan)(dan)面(mian)板(ban)(ban)(ban)(ban)，在基本的(de)PCB上，零件(jian)集中(zhong)在其中(zhong)一面(mian)，導線則集中(zhong)在另一面(mian)上。因為(wei)導線只出現在其中(zhong)一面(mian)，所以就稱這種PCB叫作單(dan)(dan)面(mian)線路板(ban)(ban)(ban)(ban)。單(dan)(dan)面(mian)板(ban)(ban)(ban)(ban)通常制作簡(jian)單(dan)(dan)，造價(jia)低，但(dan)是缺點是無法應用于(yu)太復雜的(de)產(chan)品(pin)上。