***********************************************************************
***********           PANJIT International Inc.             ***********
***********************************************************************
*Mar 26, 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 SMF8P5A-AU  A K 
.param
+vc0 = 5.006e-9		vc1 = 5.606e-9		vc2 = 4.000e-1		vc3 = 4.813e-10		vc4 = 7.089e-1
+tc1 = 5.058e-3		tc2 = 6.516e-3		tc3 = 2.158e-2		tc4 = 1.002e-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) {7.792e-2*min(i,0)}
.model zener d
***** flag parameter *****
+level = 1 
***** dc model parameter *****
+ is = 2.053e-13	  n = 1.135		 rs = 1.878e-2
+ibv = 1.000e-3	        nbv = 1.000	         bv = 9.9
+ikf = 7.000e-1
***** capacitance parameter *****
+cjo = 7.964e-10	  m = 3.200e-1		 vj = 4.364e-1 
+ fc = 0.5
***** temperature coefficient *****
+tnom = 25		 eg = 1.072	        xti = 3
+trs1 = -4.557e-3      tikf = 1.000e-3
+tbv1 = 5.652e-4       tbv2 = -1.052e-7
.ends SMF8P5A-AU
*$
