電(dian)(dian)路(lu)板(ban)制(zhi)造商根據電(dian)(dian)源電(dian)(dian)路(lu)的疊加層(ceng)(ceng)數(shu)，分(fen)為單板(ban)、雙板(ban)和(he)多(duo)層(ceng)(ceng)板(ban)。常見(jian)的多(duo)層(ceng)(ceng)板(ban)一般(ban)為4層(ceng)(ceng)板(ban)或6層(ceng)(ceng)板(ban)，復雜(za)的多(duo)層(ceng)(ceng)板(ban)可(ke)達(da)幾十層(ceng)(ceng)。PCB板(ban)由電(dian)(dian)路(lu)板(ban)廠家分(fen)為以下三種(zhong)主要類(lei)型：

單(dan)面(mian)(mian)(mian)鋁(lv)(lv)基(ji)板(ban)在(zai)(zai)Z基(ji)本PCB上(shang)，部(bu)件(jian)集中(zhong)(zhong)在(zai)(zai)一(yi)側(ce)，導(dao)線(xian)集中(zhong)(zhong)在(zai)(zai)另(ling)一(yi)側(ce)(有貼片(pian)部(bu)件(jian)時(shi)，與(yu)導(dao)線(xian)相同，插件(jian)部(bu)件(jian)的(de)(de)另(ling)一(yi)側(ce))。因為(wei)導(dao)線(xian)只出現在(zai)(zai)其(qi)中(zhong)(zhong)一(yi)面(mian)(mian)(mian)，所以(yi)這(zhe)種PCB叫作單(dan)面(mian)(mian)(mian)鋁(lv)(lv)基(ji)板(ban)。由于單(dan)面(mian)(mian)(mian)鋁(lv)(lv)基(ji)板(ban)在(zai)(zai)設(she)計線(xian)路(lu)(lu)上(shang)有很(hen)多嚴(yan)格(ge)的(de)(de)限制(zhi)(因為(wei)只有一(yi)面(mian)(mian)(mian)，布線(xian)之(zhi)間(jian)不能交叉，必須繞獨自的(de)(de)路(lu)(lu)徑(jing))，所以(yi)這(zhe)種板(ban)只能在(zai)(zai)早(zao)期(qi)的(de)(de)電(dian)源電(dian)路(lu)(lu)中(zhong)(zhong)使用(yong)。

雙(shuang)(shuang)面(mian)(mian)(mian)(mian)(mian)板(ban)(ban)這(zhe)種線(xian)(xian)(xian)(xian)(xian)路(lu)板(ban)(ban)的(de)(de)(de)兩(liang)面(mian)(mian)(mian)(mian)(mian)都有(you)布線(xian)(xian)(xian)(xian)(xian)，不過(guo)要用上兩(liang)面(mian)(mian)(mian)(mian)(mian)的(de)(de)(de)導(dao)線(xian)(xian)(xian)(xian)(xian)，必須要在(zai)兩(liang)面(mian)(mian)(mian)(mian)(mian)間(jian)有(you)適當的(de)(de)(de)電(dian)路(lu)連(lian)接(jie)才行。這(zhe)種電(dian)源(yuan)電(dian)路(lu)間(jian)的(de)(de)(de)“橋梁(liang)”叫做導(dao)孔。導(dao)孔是在(zai)PCB上，充滿(man)或涂上金屬的(de)(de)(de)小洞，它(ta)可以與兩(liang)面(mian)(mian)(mian)(mian)(mian)的(de)(de)(de)導(dao)線(xian)(xian)(xian)(xian)(xian)相連(lian)接(jie)。因為雙(shuang)(shuang)面(mian)(mian)(mian)(mian)(mian)板(ban)(ban)的(de)(de)(de)面(mian)(mian)(mian)(mian)(mian)積(ji)比單面(mian)(mian)(mian)(mian)(mian)鋁基板(ban)(ban)大了一倍，雙(shuang)(shuang)面(mian)(mian)(mian)(mian)(mian)板(ban)(ban)解決了單面(mian)(mian)(mian)(mian)(mian)鋁基板(ban)(ban)中(zhong)因為布線(xian)(xian)(xian)(xian)(xian)交錯的(de)(de)(de)難點（可以通(tong)過(guo)孔導(dao)通(tong)到另一面(mian)(mian)(mian)(mian)(mian)），它(ta)更適合用在(zai)比單面(mian)(mian)(mian)(mian)(mian)鋁基板(ban)(ban)更復雜的(de)(de)(de)電(dian)源(yuan)電(dian)路(lu)上。

材質：FR-4、疊加(jia)層數：1L、表面處理工藝：OSP.jpg

多(duo)(duo)層(ceng)(ceng)板(ban)(ban)(ban)(ban)采用(yong)單面(mian)或(huo)雙(shuang)面(mian)布(bu)線(xian)(xian)板(ban)(ban)(ban)(ban)，以(yi)(yi)增(zeng)加可(ke)布(bu)線(xian)(xian)面(mian)積。用(yong)一(yi)塊(kuai)雙(shuang)面(mian)作內(nei)層(ceng)(ceng)、二塊(kuai)單面(mian)作外(wai)層(ceng)(ceng)或(huo)二塊(kuai)雙(shuang)面(mian)作內(nei)層(ceng)(ceng)、二塊(kuai)單面(mian)作外(wai)層(ceng)(ceng)的(de)(de)(de)印(yin)刷線(xian)(xian)路(lu)(lu)板(ban)(ban)(ban)(ban)，通過(guo)定(ding)位系統及(ji)絕緣粘結(jie)材料交替(ti)(ti)在(zai)(zai)一(yi)起且(qie)導電(dian)(dian)圖(tu)形按(an)設計(ji)(ji)要求進行互(hu)連(lian)的(de)(de)(de)印(yin)刷線(xian)(xian)路(lu)(lu)板(ban)(ban)(ban)(ban)就成(cheng)為(wei)四層(ceng)(ceng)、六層(ceng)(ceng)印(yin)刷電(dian)(dian)路(lu)(lu)板(ban)(ban)(ban)(ban)了(le)，也稱為(wei)多(duo)(duo)層(ceng)(ceng)印(yin)刷線(xian)(xian)路(lu)(lu)板(ban)(ban)(ban)(ban)。板(ban)(ban)(ban)(ban)子(zi)的(de)(de)(de)疊(die)加層(ceng)(ceng)數(shu)(shu)并不(bu)代表有幾層(ceng)(ceng)獨立的(de)(de)(de)布(bu)線(xian)(xian)層(ceng)(ceng)，在(zai)(zai)特殊情況下(xia)會加入空層(ceng)(ceng)來控制板(ban)(ban)(ban)(ban)厚(hou)，一(yi)般疊(die)加層(ceng)(ceng)數(shu)(shu)都是(shi)(shi)偶數(shu)(shu)，并且(qie)包含Z外(wai)側的(de)(de)(de)兩層(ceng)(ceng)。大部(bu)分的(de)(de)(de)主機(ji)(ji)板(ban)(ban)(ban)(ban)都是(shi)(shi)4到8層(ceng)(ceng)的(de)(de)(de)結(jie)構，不(bu)過(guo)技術上理論可(ke)以(yi)(yi)做到近100層(ceng)(ceng)的(de)(de)(de)PCB板(ban)(ban)(ban)(ban)。大型的(de)(de)(de)超(chao)級計(ji)(ji)算(suan)(suan)機(ji)(ji)大多(duo)(duo)使用(yong)相當多(duo)(duo)層(ceng)(ceng)的(de)(de)(de)主機(ji)(ji)板(ban)(ban)(ban)(ban)，不(bu)過(guo)因(yin)為(wei)這類計(ji)(ji)算(suan)(suan)機(ji)(ji)已經可(ke)以(yi)(yi)用(yong)許(xu)多(duo)(duo)普通計(ji)(ji)算(suan)(suan)機(ji)(ji)的(de)(de)(de)集群代替(ti)(ti)，超(chao)多(duo)(duo)層(ceng)(ceng)板(ban)(ban)(ban)(ban)已經漸漸不(bu)被使用(yong)了(le)。因(yin)為(wei)PCB各(ge)層(ceng)(ceng)緊密(mi)結(jie)合，一(yi)般不(bu)容易看(kan)到實際數(shu)(shu)量，但是(shi)(shi)如果仔細觀(guan)察主機(ji)(ji)板(ban)(ban)(ban)(ban)，還是(shi)(shi)可(ke)以(yi)(yi)看(kan)到的(de)(de)(de)。

你知道單(dan)面(mian)鋁基板、雙面(mian)板和多(duo)層板的區別嗎？如果您不知道，請隨時咨詢電路(lu)板制造商的小(xiao)邊！