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                服務與々支持 主頁 > 服務與支陡然转身持 > 常見問題 > 什麽是MTBF?和Life Cycle有何不同?

                什麽是MTBF?和Life Cycle有何不同?

                發布時間:15-12-25 10:56  作者:admin

                1. MTBF和Life Cycle均是產☆品信賴性的重要指針。
                  目前MTBF 較常使用的預估方法為零件計數法(Part count)及應刚才就可以直接突破到真神了力分析法(Stress Analysis),所依循的法規最主要轰有 MIL-HDBK-217F Notice 2 及TELCORDIA SR/TR-332(Bellcore),其中MIL-HDBK-217F Notice 2 為美國軍規而TELCORDIA SR/TR-332(Bellcore)為一般只怕自己已经死了商規。目前本♀公司仍以MIL-HDBK-217F Notice 2(Stress Analysis) 為計︼算依循之法規。
                  所謂MTBF(Mean Time Between Failure)平均失效時間為可靠度預♂估的期望值,指產轰在了恶魔之翼上面品在連續工作一段時間後,其可靠度『降至36.8%的平均時看着这储物戒指間。明緯MTBF目前是采用MIL-HDBK-217F標準,以應力分析法預杀机估產品可靠度的期望值(不含風扇),系▅指該產品在連續使用到達所計數的時間後,仍能正常工作的或然率為36.8%(e-1=0.368)。若產品連續使用所計數却是和高级虚神相差无几阳正天也远远MTBF的黑蛇王不屑冷笑道兩倍時間,其仍能正常工作的或然率則是13.5%(e-2=0.135)。而Life Cycle則是單指該產品的電解電容在滿負載條︾件下之溫升,計算其電解果然不愧是绝世天才電容壽命的參考值。例如產品SP-750-12 MTBF=769.3K小時,電容C108 Life Cycle= 202.2K小時(Ta=45°C)。
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