***********************************************************************
***********           PANJIT International Inc.             ***********
***********************************************************************
*Jan 15, 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-B16S-AU A K
.param
+vc0 = 9.846e-11	 vc1 = 3.383e-11	 vc2 = 7.813e-1		 vc3 = 8.235e-12		 vc4 = 2.117e-1
+tc1 = 4.051e-3		 tc2 = 2.071e-2		 tc3 = 7.041e-3		 tc4 = 2.761e-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 = 1.097e-15	   n = 1.015		  rs = 5.153e-1		ikf = 5.573e-3
+ibv = 5e-3		 nbv = .5		  bv = 16
***** capacitance parameter ***
+cjo = 2.639e-11	   m = 3.327e-1		  vj = 5.960e-1
+ fc = 0.5                      
***** temperature coefficient ***
+tnom = 25		  eg = 1.125		 xti = 3
+trs1 = 2.559e-4	trs2 = 4.912e-6		tbv1 = 7.512e-4		tbv2 = -2.388e-7		tikf = 1.043e-2
.ends BZT52-B16S-AU
*$
