SUD50N03-06AP_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) Foot Junction to Ambient Case RT1 2.1224 831.4045 m N/A RT2 29.5657 126.6255 m N/A RT3 6.5930 495.2364 m N/A RT4 11.7189 346.7336 m N/A Thermal Capacitance (Joules/°C) Junction to Ambient Case Foot CT1 15.8860 m 20.2786 m N/A CT2 3.7761 14.5206 m N/A CT3 320.6251 m 321.5429 m N/A CT4 1.5534 1.0316 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: 69588 Revision: 04-Sep-07 www.vishay.com 1 SUD50N03-06AP_RC Vishay Siliconix R-C THERMAL MODEL FOR FILTER CONFIGURATION R-C VALUES FOR FILTER CONFIGURATION Thermal Resistance (°C/W) Foot Junction to Ambient Case RF1 2.3269 470.1771 m N/A RF2 10.2475 730.1899 m N/A RF3 18.7284 407.0763 m N/A RF4 18.6972 192.5567 m N/A Thermal Capacitance (Joules/°C) Junction to Ambient Case Foot CF1 12.3503 m 974.5694 u N/A CF2 234.3527 m 14.5051 m N/A CF3 1.0300 81.1939 m N/A CF4 4.3209 1.3713 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: 69588 Revision: 04-Sep-07 SUD50N03-06AP_RC Vishay Siliconix Document Number: 69588 Revision: 04-Sep-07 www.vishay.com 3