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*Varistor PSpice Model Netlist*
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*
* =EF=BF=BD 	Littelfuse Inc.
*
*     March 25, 2003
*	version 4.2
*
* Representing typical characteristics for the following UltraMOV series =
varistors:
*
*V20E130 V20E140 V20E150 V20E175 V20E200
*V20E230 V20E250 V20E275 V20E300
*V20E320 V20E385 V20E420 V20E440
*V20E460 V20E510 V20E550 V20E625
*
.SUBCKT UMOV  1 2 PARAMS: T=3D1 C=3D1pF L=3D1nH a1=3D1 a2=3D0 a3=3D0 =
a4=3D0 a5=3D0 a6=3D100u a7=3D100u
E_non_lin	3 1	VALUE {T*(
+	10^(
+	+a1+a2*(log10(limit(v(4),a7,1g))-3)
+	+a3*2^(-log10(limit(v(4),a7,1g))+3)
+	+a4*exp(-log10(limit(v(4),a7,1g))+3)
+	+a5*exp(log10(limit(v(4),a7,1g))-3)
+	+a6*2^(log10(limit(v(4),a7,1g))-3)
+	)
+	-10^(
+	a1+a2*(log10(-limit(v(4),-1g,-a7))-3)
+	+a3*2^(-log10(-limit(v(4),-1g,-a7))+3)
+	+a4*exp(-log10(-limit(v(4),-1g,-a7))+3)
+	+a5*exp(log10(-limit(v(4),-1g,-a7))-3)
+	+a6*2^(log10(-limit(v(4),-1g,-a7))-3)
+	)
+	+limit(v(4)/a7*v(8),-v(8),v(8))
+	)}
L_series	5 6  {L} =20
H_H1		4 0  VH_H1 1k
VH_H1		5 70 0V
R_R2		0 4  1G =20
R_series	6 2  100u =20
V_V1		3 70  0V
E_x_zero	8 0 	VALUE {10^(
+	a1+a2*(log10(a7/1e3))
+	+a3*2^(-log10(a7/1e3))
+	+a4*exp(-log10(a7/1e3))
+	+a5*exp(log10(a7/1e3))
+	+a6*2^(log10(a7/1e3))
+	)}
R_x_zero	8 0  1G
C_parallel	1 5 {C}
.ENDS
.SUBCKT V20E130 1 2 PARAMS: TOL=3D0
X1	1 2	UMOV PARAMS: T=3D{1+TOL/100} L=3D12nH C=3D1.9nF a1=3D2.398 =
a2=3D4.817E-2 a3=3D1.273E-2 a4=3D-2.058E-3 a5=3D1.193E-2 a6=3D-2.71E-2
.ENDS
*
.SUBCKT V20E140 1 2 PARAMS: TOL=3D0
X1	1 2	UMOV PARAMS: T=3D{1+TOL/100} L=3D12nH C=3D1.75nF a1=3D2.429 =
a2=3D4.817E-2 a3=3D1.273E-2 a4=3D-2.058E-3 a5=3D1.193E-2 a6=3D-2.71E-2
.ENDS
*
.SUBCKT V20E150 1 2 PARAMS: TOL=3D0
X1	1 2	UMOV PARAMS: T=3D{1+TOL/100} L=3D12nH C=3D1.6nF a1=3D2.467 =
a2=3D4.817E-2 a3=3D1.273E-2 a4=3D-2.058E-3 a5=3D1.193E-2 a6=3D-2.71E-2
.ENDS
*
.SUBCKT V20E175 1 2 PARAMS: TOL=3D0
X1	1 2	UMOV PARAMS: T=3D{1+TOL/100} L=3D12nH C=3D1.4nF a1=3D2.518 =
a2=3D4.817E-2 a3=3D1.273E-2 a4=3D-2.058E-3 a5=3D1.193E-2 a6=3D-2.71E-2
.ENDS
*
.SUBCKT V20E200 1 2 PARAMS: TOL=3D0
X1	1 2	UMOV PARAMS: T=3D{1+TOL/100} L=3D12nH C=3D1.3nF a1=3D2.558 =
a2=3D3.756E-2 a3=3D1.103E-2 a4=3D-1.894E-3 a5=3D8.026E-3 a6=3D-8.958E-3
.ENDS
*
.SUBCKT V20E230 1 2 PARAMS: TOL=3D0
X1	1 2	UMOV PARAMS: T=3D{1+TOL/100} L=3D12nH C=3D1.1nF a1=3D2.649 =
a2=3D5.574E-2 a3=3D1.837E-2 a4=3D-3.412E-3 a5=3D1.362E-2 a6=3D-3.772E-2
.ENDS
*
.SUBCKT V20E250 1 2 PARAMS: TOL=3D0
X1	1 2	UMOV PARAMS: T=3D{1+TOL/100} L=3D12nH C=3D1nF a1=3D2.683 =
a2=3D5.574E-2 a3=3D1.837E-2 a4=3D-3.412E-3 a5=3D1.362E-2 a6=3D-3.772E-2
.ENDS
*
.SUBCKT V20E275 1 2 PARAMS: TOL=3D0
X1	1 2	UMOV PARAMS: T=3D{1+TOL/100} L=3D12nH C=3D900pF a1=3D2.726 =
a2=3D5.574E-2 a3=3D1.837E-2 a4=3D-3.412E-3 a5=3D1.362E-2 a6=3D-3.772E-2
.ENDS
*
.SUBCKT V20E300 1 2 PARAMS: TOL=3D0
X1	1 2	UMOV PARAMS: T=3D{1+TOL/100} L=3D12nH C=3D800pF a1=3D2.764 =
a2=3D5.574E-2 a3=3D1.837E-2 a4=3D-3.412E-3 a5=3D1.362E-2 a6=3D-3.772E-2
.ENDS
*
.SUBCKT V20E320 1 2 PARAMS: TOL=3D0
X1	1 2	UMOV PARAMS: T=3D{1+TOL/100} L=3D12nH C=3D750pF a1=3D2.8 =
a2=3D5.574E-2 a3=3D1.837E-2 a4=3D-3.412E-3 a5=3D1.362E-2 a6=3D-3.772E-2
.ENDS
*
.SUBCKT V20E385 1 2 PARAMS: TOL=3D0
X1	1 2	UMOV PARAMS: T=3D{1+TOL/100} L=3D12nH C=3D700pF a1=3D2.885 =
a2=3D5.574E-2 a3=3D1.837E-2 a4=3D-3.412E-3 a5=3D1.362E-2 a6=3D-3.772E-2
.ENDS
*
.SUBCKT V20E420 1 2 PARAMS: TOL=3D0
X1	1 2	UMOV PARAMS: T=3D{1+TOL/100} L=3D12nH C=3D600pF a1=3D2.925 =
a2=3D5.574E-2 a3=3D1.837E-2 a4=3D-3.412E-3 a5=3D1.362E-2 a6=3D-3.772E-2
.ENDS
*
.SUBCKT V20E440 1 2 PARAMS: TOL=3D0
X1	1 2	UMOV PARAMS: T=3D{1+TOL/100} L=3D12nH C=3D500pF a1=3D2.947 =
a2=3D5.574E-2 a3=3D1.837E-2 a4=3D-3.412E-3 a5=3D1.362E-2 a6=3D-3.772E-2
.ENDS
*
.SUBCKT V20E460 1 2 PARAMS: TOL=3D0
X1	1 2	UMOV PARAMS: T=3D{1+TOL/100} L=3D12nH C=3D400pF a1=3D2.967 =
a2=3D5.574E-2 a3=3D1.837E-2 a4=3D-3.412E-3 a5=3D1.362E-2 a6=3D-3.772E-2
.ENDS
*
.SUBCKT V20E510 1 2 PARAMS: TOL=3D0
X1	1 2	UMOV PARAMS: T=3D{1+TOL/100} L=3D12nH C=3D350pF a1=3D3.006 =
a2=3D5.574E-2 a3=3D1.837E-2 a4=3D-3.412E-3 a5=3D1.362E-2 a6=3D-3.772E-2
.ENDS
*
.SUBCKT V20E550 1 2 PARAMS: TOL=3D0
X1	1 2	UMOV PARAMS: T=3D{1+TOL/100} L=3D12nH C=3D300pF a1=3D3.051 =
a2=3D5.574E-2 a3=3D1.837E-2 a4=3D-3.412E-3 a5=3D1.362E-2 a6=3D-3.772E-2
.ENDS
*
.SUBCKT V20E625 1 2 PARAMS: TOL=3D0
X1	1 2	UMOV PARAMS: T=3D{1+TOL/100} L=3D12nH C=3D250pF a1=3D3.092 =
a2=3D5.574E-2 a3=3D1.837E-2 a4=3D-3.412E-3 a5=3D1.362E-2 a6=3D-3.772E-2
.ENDS
*
*