***********************************************************************
***********           PANJIT International Inc.             ***********
***********************************************************************
*Oct 09, 2019                                                         *
*                                                                     *
*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-B3V3S A K
.param
+vc0 = 1.546e-10	 vc1 = 5.753e-10	 vc2 = 1.205e0		 vc3 = 2.821e-7		 vc4 = 8.185
+tc1 = 3.351e-2		 tc2 = 2.121e-2		 tc3 = 3.241e-3		 tc4 = 2.021e-4		   
.func irpwr(v) {(vc0+vc1*v^vc2)*(1.0+tc1*(temp-25)*exp(tc2*(temp-25)))+(vc3*v^vc4)*(1.0+tc3*(temp-25)*exp(tc4*(temp-25)))}
d1 A K zener
*g1 K A value = {irexp(v(K,A))}
g1 K A value = {irpwr(v(K,A))}
.model zener d
***** flag parameter ***
+level = 1   
***** dc model parameter ***
+ is = 1.328e-14	   n = 1.133		  rs = 4.219e-1		 ikf = 2.780e-1
+ibv = 1e-3		 nbv = 5.8		  bv = 3.3
***** capacitance parameter ***
+cjo = 1.787e-10	   m = 4.219e-1		  vj = 1.045
+ fc = 0.5                      
***** temperature coefficient ***
+tnom = 25		  eg = 1.145		 xti = 3
+trs1 = 1.227e-3	trs2 = 4.174e-6		tbv1 = -9.555e-4	tikf = 9.567e-3
.ends BZT52-B3V3S
*$
