1 Spice Model for Metelics Tunnel Diode Spice does not contain a model for the Tunnel Diode. To correct this omission, use the macromodel shown below. Anode (1) C1 G1 or B1 Cathode (2) G1 or B1 models the reverse and forward bias IV curve. The model does not contain temperature effects. Range for C1 is 0.21 to 0.63pF Models for Spice Version 2G6 Macromodel for MBD1057 for version 2G6 of Spice .SUBCKT MBD1057 1 2 1 - Anode 2 - Cathode C1 1 2 0.3E-12 G1 1 2 1 2 0.0 0.007358 -0.08607 0.2911 + 0.03944 -1.693 2.099 .ENDS Values for G1 G1 1 2 1 2 A B C D E F G Part Number A B C D E F G MBD1057 0.0 0.007358 -0.08607 0.2911 0.03922 -1.693 2.099 MBD2057 0.0 0.01154 -0.1269 0.4509 -0.319 -1.124 1.638 MBD3057 0.0 0.013738 -0.15709 0.546242 0.076587 -3.55975 4.75774 MBD4057 0.0 0.017188 -0.1962 0.5718 1.0678 -7.3425 8.82072 MBD5057 0.0 0.0196 -0.20173 0.48373 1.5996 -8.4563 9.6378 May 15, 2014 2 Example circuit to generate IV curve of tunnel diode using Spice version 2G6. Tunnel Diode .DC V1 -60.0E-3 470.0E-3 10.0E-3 .PRINT DC I(V1) V1 1 0 0 X1 1 0 MBD1057 .SUBCKT MBD1057 1 2 C1 1 2 0.3E-12 G1 1 2 1 2 0.0 0.007358 -0.08607 0.2911 + 0.03944 -1.693 2.099 .ENDS .END Models for Spice Version 3 Macromodel for MBD1057 for version 3 of Spice .SUBCKT MBD1057 1 2 B1 1 2 I=0.007358*V(1,2)-0.08607*V(1,2)^2+0.2911*V(1,2)^3+0.03922*V(1,2)^4-1.693*V(1,2) ^5+2.099*V(1,2)^6 C1 1 2 0.3E-12 .ENDS Values for B1 B1 1 2 I=A+B*V(1,2)+C*V(1,2)^2+D*V(1,2)^3+E*V(1,2)^5+F*V(1,2)^6 Part Number A B C D E F G MBD1057 0.0 0.007358 -0.08607 0.2911 0.03922 -1.693 2.099 MBD2057 0.0 0.01154 -0.1269 0.4509 -0.319 -1.124 1.638 MBD3057 0.0 0.013738 -0.15709 0.546242 0.076587 -3.55975 4.75774 MBD4057 0.0 0.017188 -0.1962 0.5718 1.0678 -7.3425 8.82072 MBD5057 0.0 0.0196 -0.20173 0.48373 1.5996 -8.4563 9.6378 May 15, 2014 3 Example circuit to generate IV curve of tunnel diode using Spice version 3. MBD1057 Tunnel diode .DC V1 -60.0E-3 470.0E-3 10.0E-3 .PRINT DC I(V1) V1 1 0 0 X1 1 0 MBD1057 * Metelics MBD1057 Tunnel diode 1 is Anode 2 is Cathode .SUBCKT MBD1057 1 2 B1 1 2 I=0.007358*V(1,2)-0.08607*V(1,2)^2+0.2911*V(1,2)^3+0.03922*V(1,2)^4-1.693*V(1,2) ^5+2.099*V(1,2)^6 C1 1 2 0.3E-12 .ENDS .END MGD5057 model using HSPICE (use same polynomial coefficients) .SUBCKT MBD5057 1 2 C1 1 2 0.3E-12 G1 1 2 POLY(1) 1 2 0 0.0196 -0.20173 0.48373 1.5996 -8.4563 9.6378 .ENDS Metelics provides Spice models that may be used and distributed freely, provided they are not changed in any way, resold or included in any other package for resale. These models are furnished on an "as is" basis without warranty of any kind. Metelics reserves the right to make changes to any model without notice. Although the use of models can be a useful tool in evaluating devices for applications, they do not exactly model all device characteristics under all conditions. May 15, 2014