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為什么工控主板的價格比商用主板高?
2016-09-25 14:06:19 新聞來源:黃瓜視頻app免費下載:深圳市澤創偉業科技有限公司
為什么工(gong)控(kong)(kong)主板(ban)的價(jia)格比商(shang)(shang)用主板(ban)高(gao)?工(gong)控(kong)(kong)主板(ban)相(xiang)對(dui)商(shang)(shang)用主板(ban)好在哪(na)?相(xiang)信很(hen)多用戶朋友(you)都有(you)這(zhe)個疑問,下面我們(men)就從主板(ban)元器件的用料與設計(ji)方(fang)面分析(xi)下:
商用主板:
商用(yong)(yong)(yong)主(zhu)(zhu)板(ban)由于其更(geng)新換代的(de)(de)(de)速度比(bi)較(jiao)快,且對產(chan)品的(de)(de)(de)穩定性(xing)及使(shi)(shi)用(yong)(yong)(yong)環境的(de)(de)(de)要(yao)求(qiu)比(bi)較(jiao)低,故此追求(qiu)的(de)(de)(de)是(shi)產(chan)品的(de)(de)(de)時(shi)效性(xing),以(yi)及本身(shen)產(chan)品的(de)(de)(de)市場(chang)定位(wei),對元器(qi)件(jian)(jian)選擇要(yao)求(qiu)上一般只需滿足(zu)系統運行2到(dao)3年的(de)(de)(de)使(shi)(shi)用(yong)(yong)(yong)壽(shou)命即可(3年之(zhi)后(hou)大(da)(da)部(bu)分已經更(geng)新換代了),元器(qi)件(jian)(jian)的(de)(de)(de)用(yong)(yong)(yong)料上使(shi)(shi)用(yong)(yong)(yong)普通(tong)級別的(de)(de)(de)就可以(yi)了。例如電容(rong),商用(yong)(yong)(yong)主(zhu)(zhu)板(ban)都是(shi)大(da)(da)量(liang)使(shi)(shi)用(yong)(yong)(yong)普通(tong)的(de)(de)(de)電解電容(rong),一是(shi)出于商用(yong)(yong)(yong)市場(chang)產(chan)品的(de)(de)(de)使(shi)(shi)用(yong)(yong)(yong)考慮,二是(shi)為降低主(zhu)(zhu)板(ban)的(de)(de)(de)成本考慮。
工控(kong)主(zhu)板(ban):
1)工控主(zhu)板的元(yuan)器件
工控主板選料會選用(yong)(yong)經過長時間,高(gao)要求(qiu)驗證(zheng)元器件,用(yong)(yong)以保(bao)證(zheng)產(chan)品在(zai)惡(e)劣條件下(xia)高(gao)可靠性要求(qiu)。例(li)如工控主(zhu)板的(de)元器件需(xu)要適(shi)應(ying)寬(kuan)溫環(huan)境(-20℃~60℃),如固態電容器,保(bao)證(zheng)在(zai)惡(e)劣環(huan)境下(xia)(壽命期內永久開機、氣候惡(e)劣、潮濕、振動、多(duo)塵、輻(fu)射、高(gao)溫等等)正常(chang)工作;主(zhu)板元器件需(xu)要耐高(gao)溫、抗潮濕等等。
2)工控主(zhu)板的電容
工(gong)控(kong)(kong)主(zhu)板采(cai)用(yong)(yong)的是高質量(liang)的貼片式(shi)的固(gu)態電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)、鉭(tan)、陶瓷電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong),即(ji)使(shi)使(shi)用(yong)(yong)的電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong),對其(qi)品(pin)質、性(xing)能及(ji)(ji)壽(shou)命要(yao)求也遠高于商(shang)用(yong)(yong)產品(pin),現在(zai)的工(gong)控(kong)(kong)主(zhu)板都基(ji)本(ben)(ben)上采(cai)用(yong)(yong)固(gu)態電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong),特別(bie)中(zhong)高端的工(gong)控(kong)(kong)主(zhu)板。商(shang)用(yong)(yong)主(zhu)板基(ji)本(ben)(ben)都是大(da)(da)量(liang)采(cai)用(yong)(yong)針腳式(shi)的大(da)(da)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong),因(yin)為(wei)大(da)(da)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)成本(ben)(ben)低、容(rong)值大(da)(da)一個(ge)可以頂多個(ge)貼片或(huo)坦電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)。從(cong)性(xing)質來說,電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)穩(wen)定性(xing)不及(ji)(ji)鉭(tan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)、陶瓷電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)高,壽(shou)命不及(ji)(ji)它們(men)長,耐高溫程(cheng)度不及(ji)(ji)它們(men)好。貼片式(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)比(bi)針腳式(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)更加穩(wen)定。從(cong)價格(ge)上,鉭(tan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)比(bi)普通(tong)的電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)要(yao)貴(gui),且由于鉭(tan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)的電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)量(liang)較小(xiao),使(shi)用(yong)(yong)在(zai)主(zhu)板上時,需要(yao)使(shi)用(yong)(yong)更多數量(liang)的電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong),單單鉭(tan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)的成本(ben)(ben)就是電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)的幾十倍,這也是導致(zhi)工(gong)控(kong)(kong)主(zhu)板比(bi)商(shang)用(yong)(yong)主(zhu)板成本(ben)(ben)價格(ge)高的原因(yin)之一。
3)工控主板的PCB
商用(yong)主板(ban)(ban)采用(yong)的(de)是(shi)4層(ceng)(ceng)PCB設(she)(she)計,一般的(de)PCB線(xian)路板(ban)(ban)分有四層(ceng)(ceng),最上和最下(xia)的(de)兩層(ceng)(ceng)是(shi)信(xin)號層(ceng)(ceng),中(zhong)間(jian)兩層(ceng)(ceng)是(shi)接地層(ceng)(ceng)和電源層(ceng)(ceng),將接地和電源層(ceng)(ceng)放在中(zhong)間(jian)。工業主板(ban)(ban)采用(yong)的(de)是(shi)6層(ceng)(ceng)以上PCB線(xian)路板(ban)(ban)設(she)(she)計,其(qi)設(she)(she)計是(shi)為了加強(qiang)主板(ban)(ban)的(de)抗電磁干擾、電磁兼容能力,增強(qiang)主板(ban)(ban)的(de)穩定(ding)性等等。
4)工控主板的壽命
與商用主板2到(dao)3年使用壽(shou)命不同,大多(duo)數的(de)工(gong)控(kong)主板壽(shou)命要(yao)求在(zai)3年以上,部分高品質的(de)工(gong)控(kong)主板,使用壽(shou)命甚至達到(dao)5—7年。