***********************************************************************
***********           PANJIT International Inc.             ***********
***********************************************************************
*Nov 23, 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 BZT52-B18S-AU A K
.param
+vc0 = 1.873e-11	vc1 = 4.516e-12		vc2 = 2.281e-14
+tc1 = 1.321e-2		tc2 = 3.282e-2		
d1 A K zener
g1 K A value = {(vc0+vc1*v(K,A)+vc2*v(K,A)*v(K,A))*(1.0+tc1*(temp-25)*exp(tc2*(temp-25)))}
.model zener d
***** flag parameter ***
+level = 1   
***** dc model parameter ***
+ is = 2.327e-14	   n = 1.148		  rs = 4.132e-1		ikf = 8.856e-2
+ibv = 5e-3		 nbv = 0.8		  bv = 18
***** capacitance parameter ***
+cjo = 2.382e-11	   m = 3.338e-1		  vj = 5.791e-1
+ fc = 0.5                      
***** temperature coefficient ***
+tnom = 25		  eg = 1.120		 xti = 3
+trs1 = 4.759e-4	trs2 = 1.033e-5		tbv1 = 8.434e-4		tbv2 = -7.104e-7		tikf = 1.073e-2
.ends BZT52-B18S-AU
*$
