***********************************************************************
***********           PANJIT International Inc.             ***********
***********************************************************************
*May 07, 2021                                                         *
*                                                                     *
*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-B24-AU A K 
.param
+vc0 = 1.446e-10		vc1 = 1.616e-11		vc2 = 1.000			vc3 = 2.383e-12		vc4 = 2.155e-1
+tc1 = 1.341e-2		tc2 = 1.331e-2		tc3 = 2.051e-2		tc4 = 2.321e-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 = 8.051e-14		   n = 1.203		  rs = 5.309e-1
+ibv = 5.0e-3			 nbv = 1.0			  bv = 24
+ikf = 8.706e-3
***** capacitance parameter *****
+cjo = 1.855e-11		   m = 3.549e-1		  vj = 6.651e-1 
+ fc = 0.5
***** temperature coefficient *****
+tnom = 25			  eg = 1.130		 xti = 3
+trs1 = -1.056e-4		trs2 = 2.003e-6		tikf = 1.0e-2
+tbv1 = 8.623e-4		tbv2 = -2.374e-7	
.ends BZT52-B24-AU
*$
