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從東(dong)(dong)沃PROFIBUS現場總(zong)線靜(jing)電(dian)(dian)浪(lang)湧保護方案設計圖中可(ke)知,PROFIBUS現場總(zong)線接口(kou)防護,東(dong)(dong)沃電(dian)(dian)子FAE工程(cheng)師推薦選用(yong)(yong)一(yi)顆TVS保護器件DW05-4R-S。TVS二(er)極管DW05-4R-S工作電(dian)(dian)壓(ya)5V、鉗(qian)位(wei)電(dian)(dian)壓(ya)20V、低漏電(dian)(dian)流0.5uA、單(dan)向(xiang)。根據(ju)IEC 61000-4-2,它可(ke)用(yong)(yong)於提供高達(da)±30kV(空氣放電(dian)(dian))/±30kV(接觸放電(dian)(dian))的ESD保護,根據(ju)IEC 61000-4-5,可(ke)承受15A(8/20us)的峰值脈沖(chong)電(dian)(dian)流,達(da)到350W(8/20us)的峰值脈沖(chong)功(gong)率,對接口(kou)芯片提供可(ke)靠(kao)的ESD靜(jing)電(dian)(dian)和浪(lang)湧
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