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從東(dong)沃(wo)(wo)PROFIBUS現場總(zong)線靜電(dian)浪(lang)湧(yong)(yong)保護(hu)方案設計圖中(zhong)可(ke)知(zhi),PROFIBUS現場總(zong)線接(jie)口(kou)防(fang)護(hu),東(dong)沃(wo)(wo)電(dian)子FAE工程(cheng)師推薦選用(yong)一顆TVS保護(hu)器件(jian)DW05-4R-S。TVS二極管DW05-4R-S工作(zuo)電(dian)壓5V、鉗位電(dian)壓20V、低漏(lou)電(dian)流0.5uA、單向。根(gen)據(ju)IEC 61000-4-2,它可(ke)用(yong)於(wu)提供(gong)高達±30kV(空氣放電(dian))/±30kV(接(jie)觸放電(dian))的(de)ESD保護(hu),根(gen)據(ju)IEC 61000-4-5,可(ke)承(cheng)受15A(8/20us)的(de)峰值脈沖(chong)電(dian)流,達到350W(8/20us)的(de)峰值脈沖(chong)功率,對接(jie)口(kou)芯(xin)片提供(gong)可(ke)靠的(de)ESD靜電(dian)和浪(lang)湧(yong)(yong)
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