***********************************************************************
***********           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 P4SMAFJ33A-AU  A K 
.param
+vc0 = 3.537e-11	vc1 = 5.118e-11		vc2 = 1.100		vc3 = 1.071e-14		vc4 = 3.475e-1
+tc1 = 1.756e-1		tc2 = 3.382e-2		tc3 = 4.461e-2		tc4 = 2.131e-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) {1.324*min(i,0)}
.model zener d
***** flag parameter *****
+level = 1 
***** dc model parameter *****
+ is = 1.227e-13	  n = 1.130		 rs = 3.425e-2
+ibv = 1.000e-3	        nbv = 1.000	         bv = 39.45
+ikf = 4.365e-1
***** capacitance parameter *****
+cjo = 3.201e-10	  m = 3.312e-1		 vj = 5.644e-1 
+ fc = 0.5
***** temperature coefficient *****
+tnom = 25		 eg = 1.185	        xti = 3
+trs1 = 9.426e-4       tikf = -3.5e-3
+tbv1 = 9.535e-4       tbv2 = -6.521e-7    	    
.ends P4SMAFJ33A-AU
*$
