***********************************************************************
***********           PANJIT International Inc.             ***********
***********************************************************************
*JUL 19, 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 MMSZ5231A A K 
.param
+vc0 = 4.103e-11 	vc1 = 3.512e-10		vc2 = 1.000		vc3 = 2.247e-10		vc4 = 10.0
+tc1 = 2.759e-2		tc2 = 1.095e-2		tc3 = 3.359e-3		tc4 = 5.795e-3
.func irpwr(v) {(vc0+vc1*v^vc2)*(1.0+tc1*(temp-25)*exp(tc2*(temp-25)))+(vc3*v^vc4)*(1.0+tc3*(temp-25)*exp(tc4*(temp-25)))}
d1 A K zener
g1 K A value = {irpwr(v(K,A))}
.model zener d
***** flag parameter *****
+level = 1
***** dc model parameter *****
+ is = 3.843e-15	   n = 1.081		  rs = 4.507e-1		ikf = 1.190e-1
+ibv = 20e-3		 nbv = 4.8		  bv = 5.1
***** capacitance parameter *****
+cjo = 1.386e-1		   m = 3.860e-1		  vj = 8.499e-1
+ fc = 0.5
***** temperature coefficient *****
+tnom = 25		  eg = 1.137		 xti = 3
+trs1 = 7.526e-4 	trs2 = 7.451e-6		tikf = 2.399e-3		
+tbv1 = 1.387e-4	tbv2 = -1.655e-7
.ends MMSZ5231A
*$
