為什么工控主(zhu)板(ban)的(de)價格比(bi)商用(yong)主(zhu)板(ban)高(gao)?工控主(zhu)板(ban)相(xiang)對商用(yong)主(zhu)板(ban)好(hao)在哪?相(xiang)信(xin)很(hen)多用(yong)戶朋(peng)友都(dou)有這個疑問，下面我們(men)就從主(zhu)板(ban)元(yuan)器件的(de)用(yong)料與設計方面分析(xi)下：
　　
　　商(shang)用主板(ban)：
　　
　　商用(yong)主板由于其(qi)更(geng)新(xin)換代的(de)(de)(de)(de)速(su)度(du)比較(jiao)快，且對產(chan)(chan)品(pin)的(de)(de)(de)(de)穩定(ding)性及使(shi)用(yong)環境的(de)(de)(de)(de)要(yao)求(qiu)(qiu)比較(jiao)低(di)，故此追求(qiu)(qiu)的(de)(de)(de)(de)是(shi)產(chan)(chan)品(pin)的(de)(de)(de)(de)時效性，以及本(ben)身產(chan)(chan)品(pin)的(de)(de)(de)(de)市場定(ding)位，對元器(qi)件選擇要(yao)求(qiu)(qiu)上(shang)一般只(zhi)需滿足系統運行2到3年(nian)的(de)(de)(de)(de)使(shi)用(yong)壽命即可(3年(nian)之后大(da)部分已(yi)經更(geng)新(xin)換代了)，元器(qi)件的(de)(de)(de)(de)用(yong)料上(shang)使(shi)用(yong)普通(tong)級別的(de)(de)(de)(de)就可以了。例如電(dian)容，商用(yong)主板都是(shi)大(da)量使(shi)用(yong)普通(tong)的(de)(de)(de)(de)電(dian)解電(dian)容，一是(shi)出于商用(yong)市場產(chan)(chan)品(pin)的(de)(de)(de)(de)使(shi)用(yong)考慮，二是(shi)為降(jiang)低(di)主板的(de)(de)(de)(de)成本(ben)考慮。
　　
　　工控主板：
　　
　　1)工控主板的元器件(jian)
　　
　　工控主板選料會選用(yong)經過(guo)長時間，高要(yao)求驗證(zheng)元器(qi)件，用(yong)以保(bao)證(zheng)產(chan)品在惡(e)劣(lie)條件下高可靠性(xing)要(yao)求。例如(ru)(ru)工控主(zhu)板的(de)元器(qi)件需(xu)(xu)要(yao)適(shi)應(ying)寬溫環境(jing)(-20℃~60℃)，如(ru)(ru)固(gu)態電(dian)容器(qi)，保(bao)證(zheng)在惡(e)劣(lie)環境(jing)下(壽命期內永(yong)久開(kai)機、氣(qi)候惡(e)劣(lie)、潮濕、振動、多塵、輻射、高溫等(deng)等(deng))正常工作(zuo);主(zhu)板元器(qi)件需(xu)(xu)要(yao)耐高溫、抗潮濕等(deng)等(deng)。
　　
　　2)工控(kong)主(zhu)板的電(dian)容
　　
　　工(gong)控(kong)主板(ban)(ban)采用的(de)(de)(de)(de)(de)是高質量(liang)(liang)(liang)的(de)(de)(de)(de)(de)貼(tie)片(pian)式的(de)(de)(de)(de)(de)固態(tai)電(dian)(dian)(dian)容(rong)(rong)、鉭(tan)(tan)(tan)、陶瓷(ci)電(dian)(dian)(dian)容(rong)(rong)，即使使用的(de)(de)(de)(de)(de)電(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)容(rong)(rong)，對其品質、性(xing)(xing)(xing)能及壽命(ming)(ming)要求(qiu)也遠高于商(shang)用產(chan)品，現在的(de)(de)(de)(de)(de)工(gong)控(kong)主板(ban)(ban)都基本上(shang)采用固態(tai)電(dian)(dian)(dian)容(rong)(rong)，特別中高端的(de)(de)(de)(de)(de)工(gong)控(kong)主板(ban)(ban)。商(shang)用主板(ban)(ban)基本都是大(da)量(liang)(liang)(liang)采用針(zhen)腳式的(de)(de)(de)(de)(de)大(da)電(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)容(rong)(rong)，因(yin)為大(da)電(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)容(rong)(rong)成(cheng)本低、容(rong)(rong)值大(da)一(yi)個(ge)可(ke)以頂(ding)多個(ge)貼(tie)片(pian)或坦電(dian)(dian)(dian)容(rong)(rong)。從性(xing)(xing)(xing)質來說，電(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)容(rong)(rong)穩(wen)定(ding)性(xing)(xing)(xing)不及鉭(tan)(tan)(tan)電(dian)(dian)(dian)容(rong)(rong)、陶瓷(ci)電(dian)(dian)(dian)容(rong)(rong)高，壽命(ming)(ming)不及它們長，耐高溫程(cheng)度(du)不及它們好。貼(tie)片(pian)式電(dian)(dian)(dian)容(rong)(rong)比(bi)針(zhen)腳式電(dian)(dian)(dian)容(rong)(rong)更加穩(wen)定(ding)。從價格(ge)上(shang)，鉭(tan)(tan)(tan)電(dian)(dian)(dian)容(rong)(rong)比(bi)普(pu)通的(de)(de)(de)(de)(de)電(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)容(rong)(rong)要貴，且由(you)于鉭(tan)(tan)(tan)電(dian)(dian)(dian)容(rong)(rong)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)容(rong)(rong)量(liang)(liang)(liang)較小，使用在主板(ban)(ban)上(shang)時，需(xu)要使用更多數量(liang)(liang)(liang)的(de)(de)(de)(de)(de)電(dian)(dian)(dian)容(rong)(rong)，單單鉭(tan)(tan)(tan)電(dian)(dian)(dian)容(rong)(rong)的(de)(de)(de)(de)(de)成(cheng)本就是電(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)容(rong)(rong)的(de)(de)(de)(de)(de)幾十倍，這也是導致工(gong)控(kong)主板(ban)(ban)比(bi)商(shang)用主板(ban)(ban)成(cheng)本價格(ge)高的(de)(de)(de)(de)(de)原因(yin)之一(yi)。
　　
　　3)工(gong)控主板的(de)PCB
　　
　　商(shang)用主板(ban)采用的(de)是(shi)(shi)4層PCB設(she)計，一般的(de)PCB線(xian)路板(ban)分有(you)四層，最上和最下的(de)兩(liang)層是(shi)(shi)信號層，中間兩(liang)層是(shi)(shi)接地(di)層和電源(yuan)層，將(jiang)接地(di)和電源(yuan)層放在中間。工業主板(ban)采用的(de)是(shi)(shi)6層以上PCB線(xian)路板(ban)設(she)計，其設(she)計是(shi)(shi)為(wei)了(le)加(jia)強(qiang)主板(ban)的(de)抗電磁(ci)干擾、電磁(ci)兼容(rong)能力(li)，增強(qiang)主板(ban)的(de)穩(wen)定性等等。
　　
　　4)工(gong)控主板的壽命
　　
　　與商用主板2到3年使(shi)(shi)用壽(shou)命(ming)不同，大多數的(de)工控主板壽(shou)命(ming)要求(qiu)在(zai)3年以上，部(bu)分高品質的(de)工控主板，使(shi)(shi)用壽(shou)命(ming)甚至達(da)到5—7年。