為什么工控主(zhu)板(ban)(ban)的價(jia)格比(bi)商用(yong)(yong)主(zhu)板(ban)(ban)高?工控主(zhu)板(ban)(ban)相(xiang)(xiang)對商用(yong)(yong)主(zhu)板(ban)(ban)好在哪?相(xiang)(xiang)信很(hen)多用(yong)(yong)戶朋友都(dou)有這個疑問，下面我們就從主(zhu)板(ban)(ban)元器件(jian)的用(yong)(yong)料與設(she)計方面分析(xi)下：
　　
　　商(shang)用主板：
　　
　　商(shang)用(yong)(yong)(yong)主板(ban)由于(yu)其更新(xin)換代的(de)(de)速度比較(jiao)快，且(qie)對(dui)(dui)產品(pin)的(de)(de)穩(wen)定(ding)性及(ji)使(shi)用(yong)(yong)(yong)環境的(de)(de)要求比較(jiao)低，故此追求的(de)(de)是產品(pin)的(de)(de)時(shi)效性，以及(ji)本身產品(pin)的(de)(de)市場定(ding)位，對(dui)(dui)元器件(jian)選擇要求上(shang)一般只需滿足系統運(yun)行2到3年的(de)(de)使(shi)用(yong)(yong)(yong)壽命即可(3年之后大部(bu)分已經更新(xin)換代了)，元器件(jian)的(de)(de)用(yong)(yong)(yong)料上(shang)使(shi)用(yong)(yong)(yong)普通(tong)級別的(de)(de)就可以了。例如電容，商(shang)用(yong)(yong)(yong)主板(ban)都(dou)是大量使(shi)用(yong)(yong)(yong)普通(tong)的(de)(de)電解電容，一是出于(yu)商(shang)用(yong)(yong)(yong)市場產品(pin)的(de)(de)使(shi)用(yong)(yong)(yong)考慮，二是為降低主板(ban)的(de)(de)成本考慮。
　　
　　工控主板：
　　
　　1)工控主板的元器件
　　
　　工控主板選料會選用經過長時間，高(gao)(gao)(gao)要(yao)求(qiu)驗證(zheng)元器(qi)(qi)件，用以保(bao)證(zheng)產品在惡劣(lie)條件下(xia)高(gao)(gao)(gao)可靠(kao)性要(yao)求(qiu)。例如(ru)工(gong)控主板的元器(qi)(qi)件需要(yao)適應寬溫(wen)環(huan)(huan)境(-20℃~60℃)，如(ru)固態電容器(qi)(qi)，保(bao)證(zheng)在惡劣(lie)環(huan)(huan)境下(xia)(壽命期內永久開(kai)機、氣候惡劣(lie)、潮濕、振動、多塵、輻(fu)射、高(gao)(gao)(gao)溫(wen)等等)正常工(gong)作;主板元器(qi)(qi)件需要(yao)耐高(gao)(gao)(gao)溫(wen)、抗潮濕等等。
　　
　　2)工控主板的電(dian)容
　　
　　工(gong)控(kong)(kong)主板(ban)(ban)采用(yong)(yong)的(de)(de)(de)是(shi)高質(zhi)量(liang)的(de)(de)(de)貼片(pian)(pian)式(shi)的(de)(de)(de)固態電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)、鉭(tan)、陶瓷電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)，即使(shi)(shi)使(shi)(shi)用(yong)(yong)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)，對其品(pin)質(zhi)、性(xing)(xing)能(neng)及壽命(ming)要求也(ye)遠高于商(shang)(shang)(shang)用(yong)(yong)產品(pin)，現在的(de)(de)(de)工(gong)控(kong)(kong)主板(ban)(ban)都基本上(shang)采用(yong)(yong)固態電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)，特(te)別中高端的(de)(de)(de)工(gong)控(kong)(kong)主板(ban)(ban)。商(shang)(shang)(shang)用(yong)(yong)主板(ban)(ban)基本都是(shi)大(da)(da)(da)量(liang)采用(yong)(yong)針腳式(shi)的(de)(de)(de)大(da)(da)(da)電(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)，因為大(da)(da)(da)電(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)成本低(di)、容(rong)(rong)(rong)(rong)(rong)(rong)(rong)值大(da)(da)(da)一(yi)個可(ke)以(yi)頂多個貼片(pian)(pian)或(huo)坦電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)。從性(xing)(xing)質(zhi)來說，電(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)穩(wen)定性(xing)(xing)不及鉭(tan)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)、陶瓷電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)高，壽命(ming)不及它們長，耐高溫程度不及它們好。貼片(pian)(pian)式(shi)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)比針腳式(shi)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)更加(jia)穩(wen)定。從價格上(shang)，鉭(tan)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)比普通的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)要貴，且(qie)由于鉭(tan)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)量(liang)較小，使(shi)(shi)用(yong)(yong)在主板(ban)(ban)上(shang)時，需要使(shi)(shi)用(yong)(yong)更多數量(liang)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)，單(dan)單(dan)鉭(tan)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)的(de)(de)(de)成本就(jiu)是(shi)電(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)的(de)(de)(de)幾十倍(bei)，這也(ye)是(shi)導致工(gong)控(kong)(kong)主板(ban)(ban)比商(shang)(shang)(shang)用(yong)(yong)主板(ban)(ban)成本價格高的(de)(de)(de)原因之一(yi)。
　　
　　3)工控主板(ban)的PCB
　　
　　商用主(zhu)板(ban)(ban)(ban)采(cai)用的是4層(ceng)PCB設計(ji)，一般的PCB線(xian)路板(ban)(ban)(ban)分(fen)有四層(ceng)，最上和(he)最下的兩層(ceng)是信號(hao)層(ceng)，中間兩層(ceng)是接(jie)地層(ceng)和(he)電(dian)源層(ceng)，將接(jie)地和(he)電(dian)源層(ceng)放在中間。工業主(zhu)板(ban)(ban)(ban)采(cai)用的是6層(ceng)以上PCB線(xian)路板(ban)(ban)(ban)設計(ji)，其設計(ji)是為了加強主(zhu)板(ban)(ban)(ban)的抗電(dian)磁干擾、電(dian)磁兼(jian)容能力，增強主(zhu)板(ban)(ban)(ban)的穩定性等(deng)等(deng)。
　　
　　4)工控主板的壽命
　　
　　與商用主(zhu)板2到3年使用壽(shou)命不同，大(da)多數的工控主(zhu)板壽(shou)命要(yao)求(qiu)在3年以上，部分高品(pin)質的工控主(zhu)板，使用壽(shou)命甚至達到5—7年。