请教高手

<p>我在测试P6KE6.8A ，参数:<font face="Verdana"><br/><br/><font face="Verdana">VRWM(V)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <font face="Verdana">VBR MIN.(V)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <font face="Verdana">VBR MAX.(V)</font></font></font></font></p>
<p><font face="Verdana"><font face="Verdana">&nbsp; &nbsp;5.8&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<font face="Verdana">6.45&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.14&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br/><br/>用QT2测试时，</font></font></font>在6.45--7.14V电压位置击穿了。 但是在5.8V 以下已经有很小的电流产生了。显示在图像上是一个往上拐的抛物线，开始拐的位置在4V，随着电压增加电流随之增加。<br/><br/>我测试过P6KE16A,反向图像是一个90度直角的线，说明是到达工作电压马上产生很大电流，没到达就没有电流产生。<br/><br/><br/>请教测试过的P6KE6.8A的兄弟这管子是否有问题？？？是否允许在反向工作电压之下产生几十MA的电流？？<br/><br/><span style="FONT-SIZE: 10.5pt; COLOR: #333333; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'; mso-bidi-font-family: 'Times New="New"  Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">(器件反向工作时</span><span style="FONT-SIZE: 10.5pt; COLOR: #333333; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'; mso-bidi-font-family: 'Times New="New"  Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">，器件两端的电压值称为最大反向工作电压</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; COLOR: #333333; FONT-FAMILY: 'Times New="New"  Roman'; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体">v_rwm).</span></p>