為什么工控主(zhu)板(ban)(ban)的(de)價格比商用主(zhu)板(ban)(ban)高?工控主(zhu)板(ban)(ban)相(xiang)對商用主(zhu)板(ban)(ban)好在(zai)哪?相(xiang)信很多用戶朋友都有這個疑問，下(xia)面我(wo)們就從(cong)主(zhu)板(ban)(ban)元器(qi)件的(de)用料與設計(ji)方面分析(xi)下(xia)：
　　
　　商用主板：
　　
　　商(shang)用(yong)(yong)(yong)(yong)(yong)(yong)主(zhu)板(ban)(ban)由于其(qi)更新(xin)換(huan)代的(de)(de)(de)(de)速度比較(jiao)快，且(qie)對(dui)產(chan)品的(de)(de)(de)(de)穩定(ding)性(xing)及使用(yong)(yong)(yong)(yong)(yong)(yong)環境(jing)的(de)(de)(de)(de)要(yao)(yao)求比較(jiao)低(di)，故此追求的(de)(de)(de)(de)是(shi)(shi)產(chan)品的(de)(de)(de)(de)時效性(xing)，以(yi)及本身產(chan)品的(de)(de)(de)(de)市場定(ding)位，對(dui)元(yuan)器件(jian)選(xuan)擇要(yao)(yao)求上一般只(zhi)需(xu)滿足系統運行2到(dao)3年的(de)(de)(de)(de)使用(yong)(yong)(yong)(yong)(yong)(yong)壽(shou)命(ming)即可(3年之后大部(bu)分已經更新(xin)換(huan)代了)，元(yuan)器件(jian)的(de)(de)(de)(de)用(yong)(yong)(yong)(yong)(yong)(yong)料上使用(yong)(yong)(yong)(yong)(yong)(yong)普通(tong)級別的(de)(de)(de)(de)就可以(yi)了。例如電容(rong)，商(shang)用(yong)(yong)(yong)(yong)(yong)(yong)主(zhu)板(ban)(ban)都是(shi)(shi)大量使用(yong)(yong)(yong)(yong)(yong)(yong)普通(tong)的(de)(de)(de)(de)電解電容(rong)，一是(shi)(shi)出于商(shang)用(yong)(yong)(yong)(yong)(yong)(yong)市場產(chan)品的(de)(de)(de)(de)使用(yong)(yong)(yong)(yong)(yong)(yong)考(kao)慮，二是(shi)(shi)為降低(di)主(zhu)板(ban)(ban)的(de)(de)(de)(de)成本考(kao)慮。
　　
　　工控主(zhu)板：
　　
　　1)工(gong)控主板的元器件
　　
　　工控主板選(xuan)料(liao)會選(xuan)用經過長時(shi)間，高(gao)要(yao)(yao)(yao)求驗證(zheng)元器(qi)件(jian)(jian)，用以(yi)保證(zheng)產(chan)品(pin)在惡劣條件(jian)(jian)下(xia)高(gao)可靠性(xing)要(yao)(yao)(yao)求。例如工(gong)控主板的元器(qi)件(jian)(jian)需要(yao)(yao)(yao)適(shi)應(ying)寬溫環(huan)境(-20℃~60℃)，如固態電容器(qi)，保證(zheng)在惡劣環(huan)境下(xia)(壽命期(qi)內永久開機、氣(qi)候惡劣、潮濕(shi)(shi)、振動、多塵、輻射、高(gao)溫等(deng)等(deng))正(zheng)常(chang)工(gong)作;主板元器(qi)件(jian)(jian)需要(yao)(yao)(yao)耐高(gao)溫、抗潮濕(shi)(shi)等(deng)等(deng)。
　　
　　2)工控主板的(de)電容
　　
　　工(gong)控主(zhu)板(ban)(ban)采用(yong)(yong)的(de)是(shi)(shi)高質量(liang)(liang)(liang)的(de)貼片(pian)式(shi)的(de)固(gu)(gu)態電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)、鉭、陶瓷(ci)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)，即使使用(yong)(yong)的(de)電(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)，對其品質、性能及(ji)壽(shou)命要求也遠高于商用(yong)(yong)產(chan)品，現在的(de)工(gong)控主(zhu)板(ban)(ban)都(dou)(dou)基(ji)(ji)本上(shang)采用(yong)(yong)固(gu)(gu)態電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)，特別中高端的(de)工(gong)控主(zhu)板(ban)(ban)。商用(yong)(yong)主(zhu)板(ban)(ban)基(ji)(ji)本都(dou)(dou)是(shi)(shi)大量(liang)(liang)(liang)采用(yong)(yong)針(zhen)腳(jiao)式(shi)的(de)大電(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)，因(yin)為大電(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)成本低、容(rong)(rong)(rong)(rong)(rong)(rong)值大一個(ge)可以頂(ding)多個(ge)貼片(pian)或坦電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)。從性質來(lai)說，電(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)穩(wen)定性不及(ji)鉭電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)、陶瓷(ci)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)高，壽(shou)命不及(ji)它(ta)們長，耐高溫程度(du)不及(ji)它(ta)們好。貼片(pian)式(shi)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)比針(zhen)腳(jiao)式(shi)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)更(geng)加穩(wen)定。從價格上(shang)，鉭電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)比普通(tong)的(de)電(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)要貴，且由于鉭電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)的(de)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)量(liang)(liang)(liang)較小，使用(yong)(yong)在主(zhu)板(ban)(ban)上(shang)時，需(xu)要使用(yong)(yong)更(geng)多數量(liang)(liang)(liang)的(de)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)，單單鉭電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)的(de)成本就(jiu)是(shi)(shi)電(dian)(dian)(dian)解(jie)(jie)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)的(de)幾(ji)十倍，這也是(shi)(shi)導致(zhi)工(gong)控主(zhu)板(ban)(ban)比商用(yong)(yong)主(zhu)板(ban)(ban)成本價格高的(de)原因(yin)之一。
　　
　　3)工控主板的PCB
　　
　　商(shang)用主板(ban)采用的(de)是(shi)(shi)4層(ceng)PCB設(she)計，一般的(de)PCB線(xian)路板(ban)分(fen)有四層(ceng)，最上(shang)和(he)最下的(de)兩(liang)層(ceng)是(shi)(shi)信號層(ceng)，中間兩(liang)層(ceng)是(shi)(shi)接(jie)地層(ceng)和(he)電(dian)源(yuan)(yuan)層(ceng)，將接(jie)地和(he)電(dian)源(yuan)(yuan)層(ceng)放在中間。工業主板(ban)采用的(de)是(shi)(shi)6層(ceng)以上(shang)PCB線(xian)路板(ban)設(she)計，其設(she)計是(shi)(shi)為(wei)了加強(qiang)主板(ban)的(de)抗電(dian)磁干擾、電(dian)磁兼(jian)容能力，增強(qiang)主板(ban)的(de)穩定性等等。
　　
　　4)工控主板的壽命
　　
　　與(yu)商用主(zhu)(zhu)板2到3年使用壽(shou)命(ming)不同，大多數的(de)工(gong)控主(zhu)(zhu)板壽(shou)命(ming)要求在3年以上，部(bu)分高品質的(de)工(gong)控主(zhu)(zhu)板，使用壽(shou)命(ming)甚至達到5—7年。