关于三极管击穿spice仿真

fab100 · 发表于 2009-6-13 10:16:07

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本人在仿真齐纳二极管的稳压特性时。采用将三极管发基极B和集电极C短接的方式作为二极管，当电源电源从0扫到100V时，反向偏置的二极管仍然没有击穿，不知道为什么?设置没有问题，难道是模型问题？以下是BJT hspice模型：
.model npn5 npn
+IS    = 4.8E-17       BF    = 42.5          NF    = 1.0427
+VAF    = 267.5915       IKF    = 1.52E-03       ISE    = 4.22E-15
+NE    = 3.0             BR    = 0.028          NR    = 1.0846
+VAR    = 10.0          IKR    = 1.5             ISC    = 1.0E-17
+NC    = 1.5             RB    = 160.0          IRB    = 0.75
+RBM    = 9.993          RE    = 1.5             RC    = 7.5
+XTB    = 2.36          XTI    = 1.0             EG    = 1.166
+CJE    = 2.6E-14          VJE    = 0.658             MJE    = 0.323
+TF    = 1.0E-10       XTF    = 1.0             VTF    = 10.0
+ITF    = 0.1             CJC    = 1E-13          VJC    = 0.7
+MJC    = 0.5             XCJC    = 0.5             FC    = 0.75
+CJS    = 0.0 VJS    = 0.75          MJS    = 0.5
+TR    = 0.0 PTF    = 0.0 KF    = 0.0
+AF    = 1.0             CBCP    = 0             CBEP    = 0
+CCSP    = 0             TREF    = 25.0