***********************************************************************
***********           PANJIT International Inc.             ***********
***********************************************************************
*Aug 14, 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-B2V4S A K
.param
+vc0 = 8.046e-9		 vc1 = 1.286e-6		 vc2 = 2.850		 vc3 = 7.060e-6		 vc4 = 7.234
+tc1 = 6.351e-3		 tc2 = 1.521e-3		 tc3 = 3.941e-3		 tc4 = 1.721e-3		   
*.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)))}
.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 = 1.458e-14	   n = 1.124		  rs = 3.870e-1		ikf = 4.949e-1
+ibv = 1e-3		 nbv = 5.5		  bv = 2.4
***** capacitance parameter ***
+cjo = 2.157e-10	   m = 3.173e-1		  vj = 7.674e-1
+ fc = 0.5                      
***** temperature coefficient ***
+tnom = 25		  eg = 1.080		 xti = 3
+trs1 = 7.527e-4	trs2 = 2.382e-6		tbv1 = -5.012e-4	tbv2 = 2.846e-8		tikf = 1.025e-2
.ends BZT52-B2V4S
*$
