***********************************************************************
***********           PANJIT International Inc.             ***********
***********************************************************************
*May 31, 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-C3V9S A K 
.param
+vc0 = 1.046e-12	 vc1 = 2.016e-10	 vc2 = 1.753e-8	
+tc1 = 2.051e-2		 tc2 = 8.721e-3	
+tc3 = 4.051e-3		 tc4 = 1.721e-3		   z = 7
d1 A K zener
g1 K A value = {(vc0+vc1*v(K,A))*(1.0+tc1*(temp-25)*exp(tc2*(temp-25)))+(vc2*v(K,A)^z)*(1.0+tc3*(temp-25)*exp(tc4*(temp-25)))}
.model zener d
***** flag parameter *****
+level = 1 
***** dc model parameter *****
+ is = 4.240e-16	   n = 1.003		  rs = 4.804e-1
+ibv = 5e-3		 nbv = 5		  bv = 3.9
+ikf = 1.391e-1
***** capacitance parameter *****
+cjo = 1.633e-10	   m = 5.056e-1		  vj = 1.316 
+ fc = 0.5
***** temperature coefficient *****
+tnom = 25		  eg = 1.134		 xti = 3
+trs1 = 6.585e-4	trs2 = 7.285e-6		
+tbv1 = -4.890e-4	tbv2 = 2.826e-7		tikf = 5e-3
.ends BZT52-C3V9S
*$
