為什么(me)工控(kong)(kong)主板(ban)的(de)價(jia)格比商用主板(ban)高(gao)?工控(kong)(kong)主板(ban)相對商用主板(ban)好在(zai)哪?相信(xin)很多(duo)用戶朋友都有這個疑問，下面我們就(jiu)從(cong)主板(ban)元(yuan)器件的(de)用料與設計(ji)方(fang)面分析下：
　　
　　商用主板：
　　
　　商(shang)用(yong)(yong)主板(ban)由于其更新(xin)換代的(de)(de)(de)(de)速(su)度比較(jiao)快，且對產(chan)(chan)品(pin)(pin)的(de)(de)(de)(de)穩定性及使(shi)用(yong)(yong)環境的(de)(de)(de)(de)要求比較(jiao)低，故此追求的(de)(de)(de)(de)是(shi)(shi)產(chan)(chan)品(pin)(pin)的(de)(de)(de)(de)時(shi)效性，以(yi)及本身(shen)產(chan)(chan)品(pin)(pin)的(de)(de)(de)(de)市(shi)場(chang)定位，對元(yuan)器(qi)件(jian)選擇要求上一般只需(xu)滿足系統運行(xing)2到(dao)3年(nian)的(de)(de)(de)(de)使(shi)用(yong)(yong)壽命(ming)即可(ke)(ke)(3年(nian)之后(hou)大部分已經更新(xin)換代了(le))，元(yuan)器(qi)件(jian)的(de)(de)(de)(de)用(yong)(yong)料上使(shi)用(yong)(yong)普通級別的(de)(de)(de)(de)就可(ke)(ke)以(yi)了(le)。例如電(dian)容，商(shang)用(yong)(yong)主板(ban)都是(shi)(shi)大量(liang)使(shi)用(yong)(yong)普通的(de)(de)(de)(de)電(dian)解電(dian)容，一是(shi)(shi)出于商(shang)用(yong)(yong)市(shi)場(chang)產(chan)(chan)品(pin)(pin)的(de)(de)(de)(de)使(shi)用(yong)(yong)考慮，二(er)是(shi)(shi)為降低主板(ban)的(de)(de)(de)(de)成本考慮。
　　
　　工控主板：
　　
　　1)工(gong)控主(zhu)板的元器件
　　
　　工控主板選料會選用經過長時(shi)間(jian)，高(gao)要(yao)(yao)求驗(yan)證元(yuan)器(qi)(qi)件(jian)，用以保證產品在惡(e)(e)劣條件(jian)下(xia)高(gao)可靠性要(yao)(yao)求。例如工控主板(ban)的(de)元(yuan)器(qi)(qi)件(jian)需要(yao)(yao)適(shi)應寬溫(wen)環境(-20℃~60℃)，如固(gu)態電(dian)容器(qi)(qi)，保證在惡(e)(e)劣環境下(xia)(壽命期內永久開機(ji)、氣候惡(e)(e)劣、潮濕(shi)、振(zhen)動、多塵(chen)、輻射(she)、高(gao)溫(wen)等等)正常工作;主板(ban)元(yuan)器(qi)(qi)件(jian)需要(yao)(yao)耐(nai)高(gao)溫(wen)、抗潮濕(shi)等等。
　　
　　2)工(gong)控(kong)主板的電容
　　
　　工(gong)控(kong)主(zhu)板(ban)采(cai)用的(de)(de)(de)(de)是(shi)高(gao)(gao)質量(liang)的(de)(de)(de)(de)貼(tie)片(pian)式(shi)的(de)(de)(de)(de)固(gu)態(tai)(tai)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)、鉭(tan)、陶瓷(ci)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)，即使使用的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)，對其品質、性(xing)(xing)能(neng)及(ji)(ji)(ji)壽命(ming)要(yao)(yao)求也遠高(gao)(gao)于商(shang)用產(chan)品，現在(zai)的(de)(de)(de)(de)工(gong)控(kong)主(zhu)板(ban)都基本(ben)(ben)(ben)上(shang)采(cai)用固(gu)態(tai)(tai)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)，特別中(zhong)高(gao)(gao)端的(de)(de)(de)(de)工(gong)控(kong)主(zhu)板(ban)。商(shang)用主(zhu)板(ban)基本(ben)(ben)(ben)都是(shi)大(da)(da)量(liang)采(cai)用針腳(jiao)式(shi)的(de)(de)(de)(de)大(da)(da)電(dian)(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)，因為大(da)(da)電(dian)(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)成(cheng)本(ben)(ben)(ben)低、容(rong)(rong)(rong)值大(da)(da)一個可(ke)以頂(ding)多個貼(tie)片(pian)或坦電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)。從性(xing)(xing)質來(lai)說，電(dian)(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)穩定性(xing)(xing)不(bu)及(ji)(ji)(ji)鉭(tan)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)、陶瓷(ci)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)高(gao)(gao)，壽命(ming)不(bu)及(ji)(ji)(ji)它們長，耐高(gao)(gao)溫程度不(bu)及(ji)(ji)(ji)它們好。貼(tie)片(pian)式(shi)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)比針腳(jiao)式(shi)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)更加穩定。從價格上(shang)，鉭(tan)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)比普通(tong)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)要(yao)(yao)貴，且由(you)于鉭(tan)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)量(liang)較小，使用在(zai)主(zhu)板(ban)上(shang)時，需要(yao)(yao)使用更多數量(liang)的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)，單(dan)(dan)單(dan)(dan)鉭(tan)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)的(de)(de)(de)(de)成(cheng)本(ben)(ben)(ben)就是(shi)電(dian)(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)的(de)(de)(de)(de)幾十倍，這也是(shi)導致工(gong)控(kong)主(zhu)板(ban)比商(shang)用主(zhu)板(ban)成(cheng)本(ben)(ben)(ben)價格高(gao)(gao)的(de)(de)(de)(de)原因之一。
　　
　　3)工控(kong)主(zhu)板的PCB
　　
　　商用主板(ban)(ban)(ban)采(cai)用的是4層(ceng)PCB設(she)計(ji)，一般的PCB線路(lu)板(ban)(ban)(ban)分(fen)有四(si)層(ceng)，最上和最下的兩(liang)(liang)層(ceng)是信號層(ceng)，中間(jian)兩(liang)(liang)層(ceng)是接(jie)地層(ceng)和電源(yuan)層(ceng)，將接(jie)地和電源(yuan)層(ceng)放在中間(jian)。工(gong)業主板(ban)(ban)(ban)采(cai)用的是6層(ceng)以上PCB線路(lu)板(ban)(ban)(ban)設(she)計(ji)，其(qi)設(she)計(ji)是為了加強主板(ban)(ban)(ban)的抗電磁干擾、電磁兼容能力，增強主板(ban)(ban)(ban)的穩(wen)定性等等。
　　
　　4)工控主板的壽(shou)命
　　
　　與商用(yong)(yong)主(zhu)板(ban)2到3年(nian)使用(yong)(yong)壽(shou)命(ming)不同，大多數的(de)工控主(zhu)板(ban)壽(shou)命(ming)要求在3年(nian)以上，部(bu)分高品質的(de)工控主(zhu)板(ban)，使用(yong)(yong)壽(shou)命(ming)甚至達到5—7年(nian)。