SUU_SUD50N04-16P_RC Vishay Siliconix R-C Thermal Model Parameters DESCRIPTION The parametric values in the R-C thermal model have been derived using curve-fitting techniques. These techniques are described in "A Simple Method of Generating Thermal Models for a Power MOSFET"[1]. When implemented in P-Spice, these values have matching characteristic curves to the Single Pulse Transient Thermal Impedance curves for the MOSFET. R-C values for the electrical circuit in the Foster/Tank and Cauer/Filter configurations are included. Note: For a detailed explanation of implementing these values in P-SPICE, refer to Application Note AN609 Thermal Simulations Of Power MOSFETs on P-SPICE Platform. R-C THERMAL MODEL FOR TANK CONFIGURATION R-C VALUES FOR TANK CONFIGURATION Thermal Resistance (°C/W) Junction to Ambient Case Foot RT1 14.6425 2.1551 N/A RT2 3.4587 1.1405 N/A RT3 5.9301 334.3000 m N/A RT4 25.9687 1.6701 N/A Thermal Capacitance (Joules/°C) Junction to Ambient Case Foot CT1 1.0846 39.8320 m N/A CT2 784.4246 u 478.8998 u N/A CT3 96.8110 m 2.3689 N/A CT4 3.8788 4.8093 m N/A This document is intended as a SPICE modeling guideline and does not constitute a commercial product data sheet. Designers should refer to the appropriate data sheet of the same number for guaranteed specification limits. Document Number: 69841 Revision: 13-Nov-07 www.vishay.com 1 SUU_SUD50N04-16P_RC Vishay Siliconix R-C THERMAL MODEL FOR FILTER CONFIGURATION R-C VALUES FOR FILTER CONFIGURATION Thermal Resistance (°C/W) Junction to Ambient Case Foot RF1 3.5352 1.0051 N/A RF2 6.6726 852.8000 m N/A RF3 18.6704 1.4707 N/A RF4 21.1218 1.9714 N/A Thermal Capacitance (Joules/°C) Junction to Ambient Case Foot CF1 873.6089 u 380.1621 u N/A CF2 81.6765 m 991.3525 u N/A CF3 675.0917 m 6.0639 m N/A CF4 3.4762 47.8650 m N/A Note: NA indicates not applicable Reference: [1] "A Simple Method of Generating Thermal Models for a Power MOSFET" by Wharton McDaniel and Kandarp Pandya, IEEE / SEMITHERM 2002 www.vishay.com 2 Document Number: 69841 Revision: 13-Nov-07 SUU_SUD50N04-16P_RC Vishay Siliconix Document Number: 69841 Revision: 13-Nov-07 www.vishay.com 3