***********************************************************************
***********           PANJIT International Inc.             ***********
***********************************************************************
*Sep 21, 2018                                                         *
*                                                                     *
*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 P4SMAJ18A-AU A K
.param
+vc0 = 3.512e-11		vc1 = 7.816e-11		vc2 = 2.067e-11		vc3 = 2.567e-1
+tc1 = 1.132e-2		tc2 = 3.251e-2		tc3 = 6.073e-3		tc4 = 3.307e-2
d1 A K zener
g1 K A value = {(vc0+vc1*v(K,A))*(1.0+tc1*(temp-25)*exp(tc2*(temp-25)))+(vc2*exp(vc3*v(K,A)))*(1.0+tc3*(temp-25)*exp(tc4*(temp-25)))}
.model zener d
***** flag parameter ***
+level = 1   
***** dc model parameter ***
+ is = 1.210e-13		   n = 1.122		  rs = 4.645e-2		  ikf = 1.947
+ibv = 1e-3			 nbv = 2			  bv = 21.05
***** capacitance parameter ***
+cjo = 7.249e-10		   m = 3.304e-1		  vj = 3.991e-1
+ fc = 0.5                      
***** temperature coefficient ***
+tnom = 25			  eg = 1.122		 xti = 3
+trs1 = 2.703e-4		trs2 = 8e-6			tbv1 = 7.792e-4
.ends P4SMAJ18A-AU
*$
