***********************************************************************
***********           PANJIT International Inc.             ***********
***********************************************************************
*Jan 27, 2020                                                         *
*                                                                     *
*This SPICE Model describes the characteristics of a typical device   *
*and does not respresent the specification. Designer should refer to  *
*the same type name data sheet for specification limits.              *
***********************************************************************
*$
.subckt BZT52-C56-AU A K
.param
+vc0 = 4.073e-11		 vc1 = 4.291e-11		 vc2 = 5.576e-1		 vc3 = 1.238e-11		 vc4 = 6.533e-2
+tc1 = 1.052e-2		 tc2 = 9.072e-3		 tc3 = 1.122e-2		 tc4 = 1.205e-2		   
.func irexp(v) {(vc0+vc1*v**vc2)*(1.0+tc1*(temp-25)*exp(tc2*(temp-25)))+(vc3*exp(vc4*v))*(1.0+tc3*(temp-25)*exp(tc4*(temp-25)))}
d1 A K zener
g1 K A value = {irexp(v(K,A))}
.model zener d
***** flag parameter ***
+level = 1   
***** dc model parameter ***
+ is = 4.081e-15	   	   n = 1.051		  rs = 5.479e-1		ikf = 2.984e-3
+ibv = 2.5e-3		 nbv = 1			  bv = 56
***** capacitance parameter ***
+cjo = 1.158e-11	   	   m = 4.105e-1		  vj = 7.634e-1
+ fc = 0.5                      
***** temperature coefficient ***
+tnom = 25			  eg = 1.132		 xti = 3
+trs1 = 3.041e-4		trs2 = 1.517e-6		tbv1 = 1.055e-3		tbv2 = -3.814e-7		tikf = 1.053e-2
.ends BZT52-C56-AU
*
*$
