Spice Models for Metelics Schottky Diodes 1 of 6 The standard diode model found in Spice (Ver 2) does not correctly model the reverse bias characteristics of Metelics’ Schottky diodes. To correct this problem, use the macromodel shown below. DR Anode Cathode DF Diode DF models the forward bias curve, capacitance and transit time. Diode DR models the reverse bias curve. The parameters for DF and DR for the catalog part numbers are shown on the pages that follow. Package parasitics are not include in the macromodel. See the outline datasheets for the package parasitics. Spice parameters not included are KF, AF and FC. This model does contain the velocity saturation effect that occurs at high forward bias currents. Macromodel for MSS30,046 .SUBCKT LB_SCH 1 2 1 is Anode 2 is Cathode D1 1 2 DF D2 2 1 DR .MODEL DF D (IS=26.05E-9 N=1.0 RS=10.0 CJO=0.10E-12 VJ=0.7 M=0.2 XTI=2.0 EG=0.5 TT=3.0E-12 BV=10.0) MODEL DR D (IS=37.4E-9 N=20.71 XTI=4.0 EG=33.5 BV=10.0) .ENDS Example circuit using macromodel .DC V1 .2 .6 .1 .PRINT DC V(2) V1 1 0 0 R1 1 2 1000 X1 2 0 LB_SCH .SUBCKT LB_SCH 1 2 D1 1 2 DF D2 2 1 DR .MODEL DF D (IS=26.05E-9 N=1.0 RS=10.0CJO=0.10E-12 VJ=0.7 M=0.2 XTI=2.0 EG=0.5 TT=3.0E-12 BV=10.0) .MODEL DR D (IS=37.4E-9 N=20.71 XTI=4.0 EG=33.5 BV=10.0) .ENDS .END 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. Ver 1.3 06/24/2009 Spice Model Parameters for MSS25,000 Series Diodes 2 of 6 Parameters for diode DF Part Number IS RS ohms CJO pF MSS25,047 MSS25,143 20.0E-9 to 1.0E-6 25 to 60 0.07 to 0.10 MSS25,049 MSS25,145 20.0E-9 to 1.0E-6 25 to 47 0.09 to 0.12 MSS25,141 20.0E-9 to 1.0E-6 25 to 60 0.05 to 0.08 N=0.92 to 1.0 VJ=0.7 M=0.2 TT=3.0E-12 EG=0.22 XTI=9.5 BV=20.0 Parameters for diode DR IS=680.0E-9 N=51.0 XTI=2.0 EG=20 BV=20.0 CJ0=0.0 RS=0.0 Spice Model Parameters for MSS30,000 Series Diodes Parameters for diode DF Part Number IS MSS30,046 9.1nA to 43nA SMS302 MSS30,142 MSS30,242 MSS30,346 MSS30,442 MSS30,B46 MSS30,PCR46 MSS30,CR46 MSS30,050 MSS30,148 MSS30,248 MSS30,448 RS ohms 8 to 12 CJO pF N=1.0 VJ=0.7 0.08 to 0.12 M=0.2 TT=3.0E-12 EG=0.5 XTI=2.0 BV=10.0 Parameters for diode DR IS=37.4nA N=20.71 XTI=4.0 EG=33.5 BV=10.0 16.5nA to 80nA 4.8 to 7.2 0.12 to 0.17 MSS30,154 43nA to 154nA 2.4 to 3.6 0.17 to 0.27 MSS30,254 MSS30,454 MSS30,B53 MSS30,PCR53 MSS30,CR53 Ver 1.3 06/24/2009 Spice Model Parameters for MSS39,000 Series Diodes 3 of 6 Parameters for diode DF Part Number IS RS ohms CJO pF MSS39,045 29nA to 59pA 35 to 85 0.07 to 0.10 MSS39,048 40nA to 65pA 35 to 85 0.10 to 0.15 MSS39,144 40nA to 65pA 35 to 85 0.06 to 0.08 MSS39,146 40nA to 65pA 35 to 85 0.07 to 0.10 MSS39,148 40nA to 65pA 35 to 85 0.07 to 0.12 MSS39,152 55nA to 103pA 35 to 85 0.12 to 0.18 N=1.0 VJ=0.7 M=0.2 TT=3.0E-12 EG=0.65 XTI=2.0 BV=10.0 Parameters for diode DR Part Number IS N XTI EG BV MSS39,045 34.8nA MSS39,048 33.96 4.0 10.0 10.0 MSS39,144 35.9nA MSS39,146 MSS39,148 MSS39,152 23.93 4.0 10.0 10.0 Ver 1.3 06/24/2009 Spice Model Parameters for MSS40,000 Series Diodes 4 of 6 Parameters for diode DF Part Number IS RS ohms CJO pF N=1.0 VJ=0.7 M=0.2 TT=3.0E-12 EG=0.6 XTI=2.0 BV=10.0 MSS40,045 MSS40,341 3nA to 4.5pA 5.6 to 8.4 0.07 to 0.11 MSS40,048 MSS40,148 MSS40,248 MSS40,448 5.5nA to 11pA 5.6 to 8.4 0.09 to 0.14 MSS40,141 MSS40,244 3.5nA to 4.9pA 8 to 12 0.05 to 0.07 MSS40,155 MSS40,255 MSS40,455 9.5nA to 26.5pA 4 to 6 0.2 to 0.3 MSS40,B46 MSS40,CR46 MSS40,PCR46 0.7pA to 1nA 8 to 20 0.07 to 0.125 MSS40,B53 MSS40,CR53 MSS40,PCR53 3.2pA to 2.5nA 5 to 10 0.1 to 0.25 Parameters for diode DR IS=37.4nA N=20.71 XTI=4.0 EG=9.0 BV=10.0 Spice Model Parameters for MSS50,000 Series Diodes Parameters for diode DF Part Number IS RS ohms CJO pF MSS50,048 250pA to 110fA 5.6 to 8.4 0.09 to 0.14 MSS50,062 205pA to 90fA 1.6 to 2.4 0.4 to 0.6 MSS50,146 146pA to 47fA 7.2 to 10.8 0.05 to 0.09 MSS50,244,341,448 146pA to 47fA 5.8 to 7.2 0.16 to 0.24 MSS50,B46,CR46,PCR46 130pA to 115fA 8 to 15 0.07 to 0.125 MSS50,B53,CR53,PCR53 250pA to 110fA 5 to 10 0.1 to 0.25 N=1.0 VJ=0.7 M=0.2 TT=3.0E-12 EG=0.76 XTI=2.0 BV=10.0 Parameters for diode DR Part Number IS N XTI EG BV MSS50,048 35.9nA 23.93 4.0 8.0 10.0 MSS50,062,146,244,341,448 34.8nA 33.96 4.0 8.0 10.0 MSS50,B46,CR46,PCR46 MSS50,B53,CR53,PCR53 37.4nA 20.71 4.0 8.0 10.0 Ver 1.3 06/24/2009 5 of 6 Spice Model Parameters for MSS60,000 Series Diodes Parameters for diode DF Part Number IS RS ohms CJO pF MSS60,144 MSS60,244 MSS60,444 MSS60,341 319fA to 8.3fA 10 to 20 0.06 to 0.1 MSS60,148 MSS60,248 MSS60,448 265fA to 6.8fA 7 to 13 0.09 to 0.15 MSS60,153 MSS60,253 MSS60,453 220fA to 5.6fA 3 to 7 0.15 to 0.25 MSS60,B46 2.2pA to 0.07fA 10 to 20 0.06 to 0.125 MSS60,B53 5pA to 0.3fA 7 to 13 0.1 to 0.25 MSS60,CR46,PCR46 9pA to 0.6fA 10 to 20 0.06 to 0.125 MSS60,CR53,PCR53 13pA to 1.2fA 7 to 13 0.1 to 0.25 N=1.0 VJ=0.7 M=0.2 TT=3.0E-12 EG=0.88 XTI=2.0 BV=10.0 Parameters for diode DR IS=35.9nA N=23.93 XTI=4.0 EG=7.0 BV=10.0 Suface Mount Schottkys Part Number Spice Model SMST3012 MSS30,050 SMST4012 MSS40,048 SMST6012 MSS60,148 SMST3004 SMST4004 SMST6004 SMSD3012 MSS30,050 SMSD4012 MSS40,048 SMSD6012 MSS60,148 SMST6004 MSS60,153 SMSRQ4500 MSS60,153 Ver 1.3 06/24/2009 Schottky Diode Configurations Single Crossover Ring 6 of 6 Crossover Bridge Anti Parallel Pair Series Tee Ring Quad - four junction Ring Quad - eight junction Bridge Quad - four junction Ver 1.3 06/24/2009