離(li)(li)子(zi)遷移(yi)（ECM/SIR/CAF)的(de)(de)(de)(de)(de)要因(yin)分析與(yu)解(jie)決(jue)方(fang)(fang)(fang)(fang)案(an)(an)從設計(ji)方(fang)(fang)(fang)(fang)面：越小的(de)(de)(de)(de)(de)距離(li)(li)（孔(kong)~孔(kong)、線~線、層~層、孔(kong)~線間）越易造(zao)成離(li)(li)子(zi)遷移(yi)現(xian)象(xiang)；解(jie)決(jue)方(fang)(fang)(fang)(fang)案(an)(an)：結合制程能(neng)(neng)(neng)力(li)與(yu)材料能(neng)(neng)(neng)力(li)，優化(hua)設計(ji)方(fang)(fang)(fang)(fang)案(an)(an)；（當(dang)然(ran)重點還是(shi)(shi)必須符(fu)合客戶要求）玻纖紗束(shu)與(yu)孔(kong)排(pai)列的(de)(de)(de)(de)(de)方(fang)(fang)(fang)(fang)向(xiang)；紗束(shu)與(yu)孔(kong)的(de)(de)(de)(de)(de)方(fang)(fang)(fang)(fang)向(xiang)一致時，會造(zao)成離(li)(li)子(zi)遷移(yi)的(de)(de)(de)(de)(de)可能(neng)(neng)(neng)性比較(jiao)大；解(jie)決(jue)方(fang)(fang)(fang)(fang)案(an)(an)：盡可能(neng)(neng)(neng)避免或減少紗束(shu)與(yu)孔(kong)排(pai)列一致的(de)(de)(de)(de)(de)可能(neng)(neng)(neng)性，但此項受客戶產(chan)品設計(ji)的(de)(de)(de)(de)(de)制約；產(chan)品的(de)(de)(de)(de)(de)防(fang)濕(shi)保護設計(ji)；解(jie)決(jue)方(fang)(fang)(fang)(fang)案(an)(an)：選擇比較(jiao)好的(de)(de)(de)(de)(de)防(fang)濕(shi)設計(ji)，如涉(she)及海運，建議采用PE袋或鋁箔袋包裝方(fang)(fang)(fang)(fang)式(shi)；HAST測(ce)(ce)試是(shi)(shi)目前所(suo)有半導體公司等(deng)行業對芯片(pian)等(deng)器件測(ce)(ce)試的(de)(de)(de)(de)(de)標準測(ce)(ce)試之一。貴州制造(zao)電(dian)阻測(ce)(ce)試售后服務

一個的(de)(de)(de)(de)(de)電阻測試(shi)設(she)(she)備(bei)供(gong)應(ying)商應(ying)該(gai)提供(gong)及時(shi)(shi)的(de)(de)(de)(de)(de)技術(shu)(shu)支(zhi)持(chi)(chi)。當用(yong)(yong)(yong)(yong)戶(hu)在(zai)使(shi)用(yong)(yong)(yong)(yong)設(she)(she)備(bei)時(shi)(shi)遇到問(wen)題時(shi)(shi)，他(ta)(ta)們(men)應(ying)該(gai)能(neng)(neng)夠(gou)及時(shi)(shi)聯(lian)(lian)系到供(gong)應(ying)商的(de)(de)(de)(de)(de)技術(shu)(shu)支(zhi)持(chi)(chi)團隊。供(gong)應(ying)商的(de)(de)(de)(de)(de)技術(shu)(shu)支(zhi)持(chi)(chi)團隊應(ying)該(gai)由經驗豐富的(de)(de)(de)(de)(de)工程(cheng)(cheng)師組成，能(neng)(neng)夠(gou)快速診斷和(he)解決問(wen)題。他(ta)(ta)們(men)可(ke)(ke)以通(tong)過(guo)電話、電子(zi)郵件或在(zai)線聊天(tian)等方式(shi)與(yu)用(yong)(yong)(yong)(yong)戶(hu)進行溝通(tong)，幫助(zhu)用(yong)(yong)(yong)(yong)戶(hu)解決問(wen)題。還可(ke)(ke)以提供(gong)遠(yuan)程(cheng)(cheng)技術(shu)(shu)支(zhi)持(chi)(chi)服(fu)務。通(tong)過(guo)遠(yuan)程(cheng)(cheng)技術(shu)(shu)支(zhi)持(chi)(chi)，供(gong)應(ying)商的(de)(de)(de)(de)(de)工程(cheng)(cheng)師可(ke)(ke)以通(tong)過(guo)互聯(lian)(lian)網遠(yuan)程(cheng)(cheng)連(lian)接(jie)到用(yong)(yong)(yong)(yong)戶(hu)的(de)(de)(de)(de)(de)設(she)(she)備(bei)，進行故障(zhang)診斷和(he)修(xiu)復(fu)。這種方式(shi)不僅可(ke)(ke)以節省用(yong)(yong)(yong)(yong)戶(hu)的(de)(de)(de)(de)(de)時(shi)(shi)間和(he)成本，還可(ke)(ke)以提高故障(zhang)排除的(de)(de)(de)(de)(de)效率。當用(yong)(yong)(yong)(yong)戶(hu)遇到問(wen)題時(shi)(shi)，他(ta)(ta)們(men)只需要聯(lian)(lian)系供(gong)應(ying)商的(de)(de)(de)(de)(de)技術(shu)(shu)支(zhi)持(chi)(chi)團隊，工程(cheng)(cheng)師就可(ke)(ke)以遠(yuan)程(cheng)(cheng)連(lian)接(jie)到設(she)(she)備(bei)并(bing)進行故障(zhang)排查。貴州制(zhi)造電阻測試(shi)售后服(fu)務在(zai)所用(yong)(yong)(yong)(yong)的(de)(de)(de)(de)(de)電子(zi)化學品中，容易被忽視的(de)(de)(de)(de)(de)是(shi)焊(han)劑。

4、在(zai)(zai)(zai)初(chu)始的(de)(de)(de)(de)絕(jue)緣電(dian)(dian)阻(zu)測(ce)(ce)(ce)(ce)(ce)量后(hou)(hou)關閉(bi)測(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)系(xi)統(tong)，使樣(yang)品(pin)在(zai)(zai)(zai)65±2℃或85±2℃、相對(dui)濕(shi)(shi)度(du)為(wei)(wei)(wei)87+3/-2%RH、無偏(pian)(pian)壓(ya)(ya)的(de)(de)(de)(de)環境下靜置(zhi)96個(ge)小(xiao)(xiao)時(shi)(shi)（±30分鐘）。96個(ge)小(xiao)(xiao)時(shi)(shi)（±30分鐘）的(de)(de)(de)(de)靜置(zhi)期(qi)后(hou)(hou)，在(zai)(zai)(zai)每個(ge)菊(ju)花鏈網絡和地(di)之(zhi)間測(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)絕(jue)緣電(dian)(dian)阻(zu)。5、確認(ren)所有的(de)(de)(de)(de)測(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)樣(yang)品(pin)的(de)(de)(de)(de)連(lian)接是(shi)(shi)有效的(de)(de)(de)(de)，每個(ge)測(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)電(dian)(dian)路對(dui)應(ying)適當的(de)(de)(de)(de)限流電(dian)(dian)阻(zu)。然后(hou)(hou)將測(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)板與電(dian)(dian)源(yuan)相連(lian)開(kai)始進行(xing)T/H/B部(bu)分的(de)(de)(de)(de)CAF測(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)。6、確認(ren)適當的(de)(de)(de)(de)偏(pian)(pian)置(zhi)電(dian)(dian)壓(ya)(ya)已經被(bei)加載在(zai)(zai)(zai)樣(yang)品(pin)上(shang)進行(xing)周期(qi)性測(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)。為(wei)(wei)(wei)了比較不(bu)同內層材料和制程的(de)(de)(de)(de)耐CAF性能，使用(yong)100V直流偏(pian)(pian)壓(ya)(ya)的(de)(de)(de)(de)標準CAF測(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)條件(jian)。為(wei)(wei)(wei)了確認(ren)測(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)結果(guo)與實際壽命(ming)之(zhi)間的(de)(de)(de)(de)關系(xi)，第(di)二(er)個(ge)偏(pian)(pian)置(zhi)電(dian)(dian)壓(ya)(ya)條件(jian)需要選擇給(gei)定的(de)(de)(de)(de)最高工作電(dian)(dian)壓(ya)(ya)的(de)(de)(de)(de)兩倍。當一個(ge)較小(xiao)(xiao)的(de)(de)(de)(de)偏(pian)(pian)置(zhi)電(dian)(dian)壓(ya)(ya)不(bu)能有效地(di)區別更(geng)多不(bu)同的(de)(de)(de)(de)耐CAF材料和制程時(shi)(shi)，更(geng)高的(de)(de)(de)(de)偏(pian)(pian)置(zhi)電(dian)(dian)壓(ya)(ya)由(you)于會線(xian)性地(di)影響失效時(shi)(shi)間，應(ying)該被(bei)避免采(cai)用(yong)。這是(shi)(shi)因為(wei)(wei)(wei)過高的(de)(de)(de)(de)偏(pian)(pian)置(zhi)電(dian)(dian)壓(ya)(ya)會抵消(xiao)掉相對(dui)濕(shi)(shi)度(du)的(de)(de)(de)(de)影響，而相對(dui)濕(shi)(shi)度(du)由(you)于局部(bu)加熱(re)的(de)(de)(de)(de)原因是(shi)(shi)非常重要的(de)(de)(de)(de)失效機制部(bu)分。7、在(zai)(zai)(zai)96個(ge)小(xiao)(xiao)時(shi)(shi)的(de)(de)(de)(de)靜置(zhi)時(shi)(shi)間后(hou)(hou)，測(ce)(ce)(ce)(ce)(ce)試(shi)(shi)(shi)電(dian)(dian)壓(ya)(ya)和偏(pian)(pian)置(zhi)電(dian)(dian)壓(ya)(ya)的(de)(de)(de)(de)極性必須是(shi)(shi)始終一致(zhi)的(de)(de)(de)(de)。

在進行離子(zi)(zi)(zi)(zi)遷(qian)(qian)移絕(jue)緣(yuan)(yuan)電阻(zu)測(ce)(ce)(ce)試(shi)(shi)(shi)時(shi)，需要(yao)注意以下幾點。首先，要(yao)選(xuan)擇合適的(de)(de)(de)測(ce)(ce)(ce)試(shi)(shi)(shi)設備和(he)(he)方法，確(que)(que)保(bao)測(ce)(ce)(ce)試(shi)(shi)(shi)結(jie)果的(de)(de)(de)準確(que)(que)性(xing)和(he)(he)可靠性(xing)。其次，要(yao)根據實際情況(kuang)確(que)(que)定測(ce)(ce)(ce)試(shi)(shi)(shi)的(de)(de)(de)參數和(he)(he)條件，如濕(shi)度(du)、溫度(du)、電壓(ya)等。要(yao)及時(shi)記錄和(he)(he)分析測(ce)(ce)(ce)試(shi)(shi)(shi)結(jie)果，發現問題并采取相應的(de)(de)(de)措(cuo)施(shi)進行修復或更(geng)換。離子(zi)(zi)(zi)(zi)遷(qian)(qian)移絕(jue)緣(yuan)(yuan)電阻(zu)測(ce)(ce)(ce)試(shi)(shi)(shi)是一(yi)種重要(yao)的(de)(de)(de)電子(zi)(zi)(zi)(zi)產品質(zhi)量(liang)(liang)檢(jian)測(ce)(ce)(ce)方法。它通(tong)過(guo)(guo)測(ce)(ce)(ce)量(liang)(liang)離子(zi)(zi)(zi)(zi)遷(qian)(qian)移速率(lv)和(he)(he)絕(jue)緣(yuan)(yuan)電阻(zu)值，來評估(gu)材料的(de)(de)(de)質(zhi)量(liang)(liang)和(he)(he)可靠性(xing)。離子(zi)(zi)(zi)(zi)遷(qian)(qian)移絕(jue)緣(yuan)(yuan)電阻(zu)測(ce)(ce)(ce)試(shi)(shi)(shi)廣(guang)泛應用于電子(zi)(zi)(zi)(zi)產品制(zhi)造和(he)(he)質(zhi)量(liang)(liang)控制(zhi)過(guo)(guo)程中，可以幫助檢(jian)測(ce)(ce)(ce)材料的(de)(de)(de)離子(zi)(zi)(zi)(zi)遷(qian)(qian)移問題和(he)(he)絕(jue)緣(yuan)(yuan)電阻(zu)異常，從而(er)確(que)(que)保(bao)電子(zi)(zi)(zi)(zi)產品的(de)(de)(de)質(zhi)量(liang)(liang)和(he)(he)可靠性(xing)。表面絕(jue)緣(yuan)(yuan)電阻(zu)（SIR）測(ce)(ce)(ce)試(shi)(shi)(shi)是通(tong)過(guo)(guo)在高(gao)溫高(gao)濕(shi)的(de)(de)(de)環(huan)境中持(chi)續給予PCB一(yi)定的(de)(de)(de)偏壓(ya)，經(jing)過(guo)(guo)長(chang)時(shi)間(jian)的(de)(de)(de)試(shi)(shi)(shi)驗(yan)。

一(yi)般我們使用這(zhe)個方法來(lai)量測靜態的(de)(de)表(biao)面絕緣(yuan)電(dian)(dian)(dian)阻(zu)(SIR)與動(dong)態的(de)(de)離子(zi)(zi)遷移現象(ION MIGRATION)，另(ling)外，它也可(ke)(ke)以(yi)拿來(lai)作 CAF(Conductive Anodic *ment，導(dao)電(dian)(dian)(dian)性細絲(si)物，陽(yang)極性玻纖纖維之漏電(dian)(dian)(dian)現象)試驗。 注：CAF主要(yao)在測試助焊(han)(han)劑對PCB板(ban)吸濕性及玻璃(li)纖維表(biao)面分(fen)離的(de)(de)影響。 表(biao)面絕緣(yuan)電(dian)(dian)(dian)阻(zu)(SIR)被用來(lai)評(ping)估(gu)污染(ran)物對組裝件(jian)可(ke)(ke)靠(kao)度(du)的(de)(de)影響。跟其(qi)(qi)他方法相比，SIR的(de)(de)優(you)點(dian)(dian)(dian)除(chu)了(le)可(ke)(ke)偵測局部的(de)(de)污染(ran)外，也可(ke)(ke)以(yi)測得離子(zi)(zi)及非離子(zi)(zi)污染(ran)物對印刷電(dian)(dian)(dian)路(lu)板(ban)(PCB)可(ke)(ke)靠(kao)度(du)的(de)(de)影響，其(qi)(qi)效(xiao)果遠比其(qi)(qi)他方法(如清潔度(du)試驗、鉻酸(suan)銀試驗…等)來(lai)的(de)(de)有(you)效(xiao)及方便。 由于(yu)電(dian)(dian)(dian)路(lu)板(ban)布線越來(lai)越密，焊(han)(han)點(dian)(dian)(dian)與焊(han)(han)點(dian)(dian)(dian)也越來(lai)越近，所以(yi)這(zhe)項實驗也可(ke)(ke)作為錫膏助焊(han)(han)劑的(de)(de)可(ke)(ke)用性評(ping)估(gu)參考。電(dian)(dian)(dian)阻(zu)測試設備對使用技巧有(you)較高要(yao)求。江西供(gong)應電(dian)(dian)(dian)阻(zu)測試銷售廠(chang)家

選(xuan)擇(ze)智能電(dian)阻(zu)時，用戶(hu)需(xu)要根據(ju)具體(ti)需(xu)求考慮精度(du)、穩定(ding)性、接口等因素(su)，以便選(xuan)擇(ze)適合的智能電(dian)阻(zu)產品(pin)。貴州(zhou)制造電(dian)阻(zu)測試售后服(fu)務

PCB/PCBA絕緣(yuan)失(shi)效(xiao)是(shi)指電(dian)(dian)(dian)(dian)(dian)介質(zhi)(zhi)在(zai)電(dian)(dian)(dian)(dian)(dian)壓作用(yong)下(xia)會產(chan)生(sheng)能(neng)量損(sun)耗，這種損(sun)耗很大時，原先的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)能(neng)轉化(hua)(hua)為熱能(neng)，使(shi)(shi)電(dian)(dian)(dian)(dian)(dian)介質(zhi)(zhi)溫度(du)升高，絕緣(yuan)老化(hua)(hua)，甚至使(shi)(shi)電(dian)(dian)(dian)(dian)(dian)介質(zhi)(zhi)熔(rong)化(hua)(hua)、燒焦，**終喪失(shi)絕緣(yuan)性能(neng)而發生(sheng)熱擊穿。電(dian)(dian)(dian)(dian)(dian)介質(zhi)(zhi)的(de)(de)(de)損(sun)耗是(shi)衡量其絕緣(yuan)性能(neng)的(de)(de)(de)重要指標，電(dian)(dian)(dian)(dian)(dian)介質(zhi)(zhi)即絕緣(yuan)材料(liao)，是(shi)電(dian)(dian)(dian)(dian)(dian)氣設備、裝置(zhi)中用(yong)來隔離存在(zai)不同點位的(de)(de)(de)導體(ti)的(de)(de)(de)物質(zhi)(zhi)，通過各類導體(ti)間的(de)(de)(de)絕緣(yuan)隔斷功能(neng)控制(zhi)電(dian)(dian)(dian)(dian)(dian)流(liu)的(de)(de)(de)方向。電(dian)(dian)(dian)(dian)(dian)介質(zhi)(zhi)長期(qi)受到(dao)點場、熱能(neng)、機械應力等的(de)(de)(de)破壞。在(zai)電(dian)(dian)(dian)(dian)(dian)場的(de)(de)(de)作用(yong)下(xia)，電(dian)(dian)(dian)(dian)(dian)介質(zhi)(zhi)會發生(sheng)極化(hua)(hua)、電(dian)(dian)(dian)(dian)(dian)導、耗損(sun)和擊穿等現象，這些現象的(de)(de)(de)相關物理參數(shu)可以用(yong)相對介電(dian)(dian)(dian)(dian)(dian)系數(shu)、電(dian)(dian)(dian)(dian)(dian)導率、介質(zhi)(zhi)損(sun)耗因數(shu)、擊穿電(dian)(dian)(dian)(dian)(dian)壓來表征。貴州制(zhi)造電(dian)(dian)(dian)(dian)(dian)阻測試售后服務(wu)

本文來自(zi)四川精碳偉業環保(bao)科(ke)技有限責(ze)任公司：//wasul.cn/Article/34d32199644.html