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***********           PANJIT International Inc.             ***********
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*Aug 02, 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 BZX84B18 1 2 3
.param
+vc0 = 8.903e-11	vc1 = 4.582e-11		 vc2 = 1.000		 vc3 = 1.987e-12		 vc4 = 3.767e-2
+tc1 = 2.319e-2		tc2 = 1.315e-2		 tc3 = 2.359e-2		 tc4 = 9.595e-3
.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)))}
d1 1 3 zener
g1 3 1 value = {irexp(v(3,1))}
.model zener d
***** flag parameter *****
+level = 1
***** dc model parameter *****
+ is = 2.136e-16           n = 0.969		  rs = 1.229e-1		 ikf = 1.589e-2
+ibv = 5e-3		 nbv = 1		  bv = 18
***** capacitance parameter *****
+cjo = 2.440e-11	   m = 3.317e-1		  vj = 5.756e-1
+ fc = 0.5
***** temperature coefficient *****
+tnom = 25		  eg =1.095		 xti = 3
+trs1 =  -4.805e-4	trs2 = 6.551e-6		tikf = 1.6e-3		
+tbv1 = 7.312e-4	tbv2 = -5.658e-7
.ends BZX84B18
*$
