為什么工(gong)控主板的(de)價格比商用(yong)主板高?工(gong)控主板相對商用(yong)主板好在哪?相信很多用(yong)戶(hu)朋友都有這個疑問，下(xia)(xia)面我(wo)們(men)就(jiu)從主板元器件的(de)用(yong)料與設計(ji)方(fang)面分析下(xia)(xia)：
　　
　　商用主板：
　　
　　商用主(zhu)板由于其更(geng)新(xin)換代的(de)速度比(bi)較快，且對產(chan)(chan)品(pin)的(de)穩定(ding)(ding)性及使(shi)用環(huan)境(jing)的(de)要求(qiu)(qiu)比(bi)較低，故此追求(qiu)(qiu)的(de)是(shi)(shi)產(chan)(chan)品(pin)的(de)時效性，以(yi)及本身(shen)產(chan)(chan)品(pin)的(de)市(shi)場(chang)定(ding)(ding)位，對元器(qi)件選(xuan)擇要求(qiu)(qiu)上一般只需滿足系(xi)統運行2到3年(nian)的(de)使(shi)用壽(shou)命(ming)即可(3年(nian)之后大部分已經更(geng)新(xin)換代了)，元器(qi)件的(de)用料上使(shi)用普通(tong)級別的(de)就可以(yi)了。例如電(dian)容，商用主(zhu)板都是(shi)(shi)大量使(shi)用普通(tong)的(de)電(dian)解(jie)電(dian)容，一是(shi)(shi)出(chu)于商用市(shi)場(chang)產(chan)(chan)品(pin)的(de)使(shi)用考慮，二是(shi)(shi)為降(jiang)低主(zhu)板的(de)成本考慮。
　　
　　工控主板(ban)：
　　
　　1)工控主板的元器件
　　
　　工控主板選(xuan)(xuan)料會選(xuan)(xuan)用經過長時間(jian)，高要求驗(yan)證(zheng)元器(qi)(qi)(qi)件，用以(yi)保(bao)證(zheng)產(chan)品在(zai)(zai)惡劣(lie)條件下高可靠性要求。例(li)如工控主板的元器(qi)(qi)(qi)件需要適應寬溫環境(-20℃~60℃)，如固(gu)態電容器(qi)(qi)(qi)，保(bao)證(zheng)在(zai)(zai)惡劣(lie)環境下(壽(shou)命期內永久開機(ji)、氣候惡劣(lie)、潮濕(shi)、振動、多塵(chen)、輻射(she)、高溫等(deng)(deng)等(deng)(deng))正常工作;主板元器(qi)(qi)(qi)件需要耐高溫、抗(kang)潮濕(shi)等(deng)(deng)等(deng)(deng)。
　　
　　2)工控主板的電容
　　
　　工(gong)(gong)控(kong)(kong)(kong)(kong)主(zhu)(zhu)(zhu)板(ban)(ban)(ban)采用(yong)(yong)的(de)是(shi)(shi)高(gao)質(zhi)量的(de)貼(tie)片式的(de)固態(tai)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)、鉭、陶瓷電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)，即使(shi)使(shi)用(yong)(yong)的(de)電(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)，對其品質(zhi)、性能及(ji)(ji)壽(shou)命(ming)(ming)要求也遠高(gao)于商(shang)用(yong)(yong)產品，現(xian)在的(de)工(gong)(gong)控(kong)(kong)(kong)(kong)主(zhu)(zhu)(zhu)板(ban)(ban)(ban)都基本(ben)上采用(yong)(yong)固態(tai)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)，特(te)別中(zhong)高(gao)端的(de)工(gong)(gong)控(kong)(kong)(kong)(kong)主(zhu)(zhu)(zhu)板(ban)(ban)(ban)。商(shang)用(yong)(yong)主(zhu)(zhu)(zhu)板(ban)(ban)(ban)基本(ben)都是(shi)(shi)大(da)量采用(yong)(yong)針(zhen)腳(jiao)式的(de)大(da)電(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)，因(yin)為大(da)電(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)成本(ben)低、容(rong)(rong)(rong)(rong)(rong)(rong)(rong)值大(da)一個(ge)可以頂多(duo)個(ge)貼(tie)片或坦電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)。從性質(zhi)來說(shuo)，電(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)穩定性不(bu)及(ji)(ji)鉭電(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(gao)，壽(shou)命(ming)(ming)不(bu)及(ji)(ji)它們長，耐高(gao)溫程度不(bu)及(ji)(ji)它們好。貼(tie)片式電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)比針(zhen)腳(jiao)式電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)更加穩定。從價格上，鉭電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)比普通(tong)的(de)電(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)要貴，且由于鉭電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)的(de)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)量較小，使(shi)用(yong)(yong)在主(zhu)(zhu)(zhu)板(ban)(ban)(ban)上時(shi)，需要使(shi)用(yong)(yong)更多(duo)數量的(de)電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)，單單鉭電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)的(de)成本(ben)就是(shi)(shi)電(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)(rong)的(de)幾(ji)十倍，這(zhe)也是(shi)(shi)導致工(gong)(gong)控(kong)(kong)(kong)(kong)主(zhu)(zhu)(zhu)板(ban)(ban)(ban)比商(shang)用(yong)(yong)主(zhu)(zhu)(zhu)板(ban)(ban)(ban)成本(ben)價格高(gao)的(de)原因(yin)之一。
　　
　　3)工控主板的PCB
　　
　　商用(yong)主(zhu)板采用(yong)的(de)是4層(ceng)(ceng)PCB設計(ji)(ji)，一般(ban)的(de)PCB線(xian)路板分有四層(ceng)(ceng)，最(zui)(zui)上和最(zui)(zui)下的(de)兩層(ceng)(ceng)是信(xin)號層(ceng)(ceng)，中(zhong)間(jian)兩層(ceng)(ceng)是接地層(ceng)(ceng)和電(dian)源層(ceng)(ceng)，將接地和電(dian)源層(ceng)(ceng)放在中(zhong)間(jian)。工業(ye)主(zhu)板采用(yong)的(de)是6層(ceng)(ceng)以上PCB線(xian)路板設計(ji)(ji)，其設計(ji)(ji)是為了(le)加(jia)強主(zhu)板的(de)抗電(dian)磁(ci)干擾、電(dian)磁(ci)兼容(rong)能力，增強主(zhu)板的(de)穩(wen)定(ding)性等等。
　　
　　4)工控主板(ban)的壽(shou)命
　　
　　與商(shang)用主板2到3年(nian)(nian)使(shi)(shi)用壽命(ming)不同，大多數的(de)工控(kong)(kong)主板壽命(ming)要求在3年(nian)(nian)以上，部(bu)分高品質的(de)工控(kong)(kong)主板，使(shi)(shi)用壽命(ming)甚至(zhi)達(da)到5—7年(nian)(nian)。