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從東沃PROFIBUS現(xian)場(chang)總線靜電(dian)(dian)浪湧保(bao)護(hu)方案設計圖中可(ke)知,PROFIBUS現(xian)場(chang)總線接(jie)(jie)口防護(hu),東沃電(dian)(dian)子(zi)FAE工程(cheng)師(shi)推薦(jian)選(xuan)用一顆TVS保(bao)護(hu)器件DW05-4R-S。TVS二(er)極管(guan)DW05-4R-S工作電(dian)(dian)壓(ya)5V、鉗位電(dian)(dian)壓(ya)20V、低漏(lou)電(dian)(dian)流(liu)0.5uA、單向。根據IEC 61000-4-2,它可(ke)用於提供(gong)高(gao)達(da)(da)±30kV(空氣(qi)放電(dian)(dian))/±30kV(接(jie)(jie)觸(chu)放電(dian)(dian))的ESD保(bao)護(hu),根據IEC 61000-4-5,可(ke)承(cheng)受15A(8/20us)的峰值脈沖電(dian)(dian)流(liu),達(da)(da)到350W(8/20us)的峰值脈沖功率,對接(jie)(jie)口芯片提供(gong)可(ke)靠(kao)的ESD靜電(dian)(dian)和浪湧
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