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* source http://espice.ugr.es/espice/src/modelos_subckt/spice_complete/cadlab.lib
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* 1N4731    4.3 Volt ñ5% 1W zener diode
.model D1N4731  D(Is=837.3E-18 Rs=.1211 Ikf=0 N=1 Xti=3 Eg=1.11 Cjo=220p M=.389
+               Vj=.75 Fc=.5 Isr=2.56n Nr=2 Bv=4.3 Ibv=60.167m Nbv=1.8815
+               Ibvl=6.0358m Nbvl=12.57 Tbv1=-232.558u)
*               Motorola        pid=1N4731      case=DO-41
*               89-9-19 gjg
*               Vz = 4.3 @ 58mA, Zz = 325 @ 1mA, Zz = 24 @ 5mA, Zz = 3.2 @ 20mA
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