***********************************************************************
***********           PANJIT International Inc.             ***********
***********************************************************************
*Mar 09, 2026                                                         *
*                                                                     *
*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 SM8S16A-AU  A K 
.param
+vc0 = 4.106e-10	vc1 = 7.056e-10		vc2 = 1.150		vc3 = 1.565e-10		vc4 = 4.349e-1
+tc1 = 5.681e-2		tc2 = 3.211e-2		tc3 = 2.001e-2		tc4 = 2.121e-2
d1  A A1 zener
g1 A1 A value = {irexp(v(A1,A))}
v1 A1 K1 0
e1 K1 K value = {rbv(i(v1))}
.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)))}
.func rbv(i) {7.223e-3*min(i,0)}
.model zener d
***** flag parameter *****
+level = 1 
***** dc model parameter *****
+ is = 5.458e-12	  n = 1.106		 rs = 3.283e-3
+ibv = 5.000e-3	        nbv = 1.000	         bv = 18.75
+ikf = 2.876e1
***** capacitance parameter *****
+cjo = 2.122e-8		  m = 3.342e-1		 vj = 3.985e-1 
+ fc = 0.5
***** temperature coefficient *****
+tnom = 25		 eg = 1.075	        xti = 3
+trs1 = 1.500e-3       trs2 = 7.300e-6	       tikf = 7.0e-3
+tbv1 = 7.584e-4       tbv2 = 8.504e-8
.ends SM8S16A-AU
*$
