***********************************************************************
***********           PANJIT International Inc.             ***********
***********************************************************************
*Nov 08, 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-C4V3S A K
.param
+vc0 = 2.873e-11	vc1 = 8.016e-10		vc2 = 3.462e0		vc3 = 3.865e-9		vc4 = 9.65e0
+tc1 = 2.221e-2		tc2 = 9.382e-3		tc3 = 2.021e-3		tc4 = 3.682e-3
.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 = {irpwr(v(K,A))}
.model zener d
***** flag parameter ***
+level = 1   
***** dc model parameter ***
+ is = 1.374e-15	   n = 1.045		  rs = 4.891e-1		 ikf = 1.175e-1
+ibv = 5e-3		 nbv = 2		  bv = 4.3
***** capacitance parameter ***
+cjo = 1.402e-10	   m = 4.162e-1	  vj = 9.583e-1
+ fc = 0.5                      
***** temperature coefficient ***
+tnom = 25		  eg = 1.148		 xti = 3
+trs1 = 9.547e-4	trs2 = 6.531e-6		tbv1 = -3.637e-4	tbv2 = -2.507e-7
.ends BZT52-C4V3S
*$
