***********************************************************************
***********           PANJIT International Inc.             ***********
***********************************************************************
*Jan 30, 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 P4SMA24A-AU  A K 
.param
+vc0 = 2.406e-10	vc1 = 5.606e-11		vc2 = 1.000		vc3 = 1.005e-12		vc4 = 3.475e-1
+tc1 = 1.521e-2		tc2 = 3.561e-2		tc3 = 5.461e-2		tc4 = 2.531e-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) {3.636e-1*min(i,0)}
.model zener d
***** flag parameter *****
+level = 1 
***** dc model parameter *****
+ is = 9.077e-14	  n = 1.088		 rs = 5.555e-2
+ibv = 1.000e-3	        nbv = 1.000	         bv = 24
+ikf = 4.683e-1
***** capacitance parameter *****
+cjo = 6.492e-10	  m = 3.300e-1		 vj = 4.884e-1 
+ fc = 0.5
***** temperature coefficient *****
+tnom = 25		 eg = 1.130	        xti = 3
+trs1 = 9.052e-4       trs2 = 7.503e-6
+tbv1 = 8.115e-4       tbv2 = -3.108e-7   
.ends P4SMA24A-AU
*$
