為什么工控主(zhu)板的(de)價格比商用主(zhu)板高?工控主(zhu)板相(xiang)對商用主(zhu)板好(hao)在哪(na)?相(xiang)信很(hen)多用戶朋友都有這個疑問，下面我們就從主(zhu)板元器件(jian)的(de)用料與設計(ji)方面分析下：
　　
　　商用主板：
　　
　　商(shang)用(yong)主(zhu)板(ban)由于其更新換代(dai)的(de)(de)(de)速度比較快，且對(dui)產品(pin)的(de)(de)(de)穩定(ding)性及使(shi)(shi)用(yong)環境的(de)(de)(de)要求比較低，故此追(zhui)求的(de)(de)(de)是產品(pin)的(de)(de)(de)時效(xiao)性，以及本(ben)身產品(pin)的(de)(de)(de)市場(chang)定(ding)位，對(dui)元器件選擇要求上一般只需(xu)滿足系(xi)統運行2到3年(nian)的(de)(de)(de)使(shi)(shi)用(yong)壽命即可(3年(nian)之后大部分(fen)已經更新換代(dai)了)，元器件的(de)(de)(de)用(yong)料上使(shi)(shi)用(yong)普通級別的(de)(de)(de)就可以了。例(li)如電容，商(shang)用(yong)主(zhu)板(ban)都(dou)是大量使(shi)(shi)用(yong)普通的(de)(de)(de)電解電容，一是出(chu)于商(shang)用(yong)市場(chang)產品(pin)的(de)(de)(de)使(shi)(shi)用(yong)考慮，二是為(wei)降(jiang)低主(zhu)板(ban)的(de)(de)(de)成本(ben)考慮。
　　
　　工控主板：
　　
　　1)工(gong)控(kong)主板(ban)的元器件
　　
　　工控主板選(xuan)料會選(xuan)用經過長時間，高(gao)要求驗證(zheng)元器(qi)件(jian)，用以保證(zheng)產品在惡劣(lie)條件(jian)下高(gao)可靠性要求。例如(ru)工控主板的元器(qi)件(jian)需(xu)要適應(ying)寬(kuan)溫(wen)環(huan)境(jing)(-20℃~60℃)，如(ru)固(gu)態電(dian)容(rong)器(qi)，保證(zheng)在惡劣(lie)環(huan)境(jing)下(壽命期(qi)內(nei)永久(jiu)開機、氣(qi)候惡劣(lie)、潮(chao)濕、振動、多(duo)塵、輻射、高(gao)溫(wen)等(deng)(deng)等(deng)(deng))正常工作;主板元器(qi)件(jian)需(xu)要耐高(gao)溫(wen)、抗潮(chao)濕等(deng)(deng)等(deng)(deng)。
　　
　　2)工控主板(ban)的電容
　　
　　工(gong)(gong)控(kong)主(zhu)(zhu)板(ban)(ban)(ban)采(cai)用(yong)的(de)是高質(zhi)量的(de)貼片式(shi)的(de)固(gu)態(tai)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)、鉭、陶(tao)瓷電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)，即使(shi)使(shi)用(yong)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)，對(dui)其(qi)品質(zhi)、性(xing)能及(ji)壽命要求(qiu)也(ye)遠高于商(shang)用(yong)產品，現在(zai)的(de)工(gong)(gong)控(kong)主(zhu)(zhu)板(ban)(ban)(ban)都(dou)基本上(shang)采(cai)用(yong)固(gu)態(tai)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)，特別中高端的(de)工(gong)(gong)控(kong)主(zhu)(zhu)板(ban)(ban)(ban)。商(shang)用(yong)主(zhu)(zhu)板(ban)(ban)(ban)基本都(dou)是大量采(cai)用(yong)針(zhen)腳(jiao)式(shi)的(de)大電(dian)(dian)(dian)(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)，因為大電(dian)(dian)(dian)(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)成本低(di)、容(rong)(rong)(rong)(rong)(rong)值大一個可以頂多個貼片或坦(tan)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)。從性(xing)質(zhi)來(lai)說(shuo)，電(dian)(dian)(dian)(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)穩定(ding)性(xing)不(bu)(bu)及(ji)鉭電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)、陶(tao)瓷電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)高，壽命不(bu)(bu)及(ji)它們(men)長，耐(nai)高溫程度不(bu)(bu)及(ji)它們(men)好。貼片式(shi)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)比針(zhen)腳(jiao)式(shi)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)更(geng)加(jia)穩定(ding)。從價格上(shang)，鉭電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)比普通(tong)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)要貴，且由于鉭電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)量較(jiao)小，使(shi)用(yong)在(zai)主(zhu)(zhu)板(ban)(ban)(ban)上(shang)時(shi)，需要使(shi)用(yong)更(geng)多數量的(de)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)，單單鉭電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)的(de)成本就是電(dian)(dian)(dian)(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)的(de)幾十倍，這(zhe)也(ye)是導致工(gong)(gong)控(kong)主(zhu)(zhu)板(ban)(ban)(ban)比商(shang)用(yong)主(zhu)(zhu)板(ban)(ban)(ban)成本價格高的(de)原因之(zhi)一。
　　
　　3)工控主板的(de)PCB
　　
　　商用(yong)主(zhu)板(ban)(ban)采用(yong)的(de)(de)是(shi)4層(ceng)PCB設計(ji)，一般的(de)(de)PCB線(xian)路(lu)板(ban)(ban)分(fen)有四層(ceng)，最上和最下的(de)(de)兩(liang)(liang)層(ceng)是(shi)信號層(ceng)，中間兩(liang)(liang)層(ceng)是(shi)接地(di)(di)層(ceng)和電(dian)源層(ceng)，將接地(di)(di)和電(dian)源層(ceng)放在中間。工(gong)業主(zhu)板(ban)(ban)采用(yong)的(de)(de)是(shi)6層(ceng)以上PCB線(xian)路(lu)板(ban)(ban)設計(ji)，其設計(ji)是(shi)為(wei)了加(jia)強主(zhu)板(ban)(ban)的(de)(de)抗(kang)電(dian)磁(ci)(ci)干擾、電(dian)磁(ci)(ci)兼容能(neng)力，增強主(zhu)板(ban)(ban)的(de)(de)穩定性等等。
　　
　　4)工控主板的(de)壽命
　　
　　與商用主(zhu)板(ban)2到3年使用壽命不(bu)同，大多數的(de)工(gong)控主(zhu)板(ban)壽命要求(qiu)在(zai)3年以上(shang)，部(bu)分(fen)高品質的(de)工(gong)控主(zhu)板(ban)，使用壽命甚至達到5—7年。