***********************************************************************
***********           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-B3S A K
.param
+vc0 = 3.046e-13	 vc1 = 8.053e-9		 vc2 = 1.205e0		 vc3 = 6.651e-7		 vc4 = 7.825
+tc1 = 9.351e-3		 tc2 = 7.721e-3		 tc3 = 4.941e-3		 tc4 = 1.721e-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 = {irpwr(v(K,A))}
.model zener d
***** flag parameter ***
+level = 1   
***** dc model parameter ***
+ is = 7.689e-15	   n = 1.106		  rs = 4.428e-1		ikf = 2.667e-1
+ibv = 1e-3		 nbv = 5.8		  bv = 3
***** capacitance parameter ***
+cjo = 1.881e-10	   m = 4.819e-1		  vj = 1.271
+ fc = 0.5                      
***** temperature coefficient ***
+tnom = 25		  eg = 1.135		 xti = 3
+trs1 = 1.327e-3	trs2 = 5.044e-6		tbv1 = -3.065e-4	tbv2 = -8.071e-7	tikf = 1.067e-2
.ends BZT52-B3S
*$
