SMT, PCB Electronics Industry News

SMT, PCB Electronics Industry News

News from Vishay Intertechnology, Inc.

Vishay Offers Designers Free Online MOSFET Thermal-Simulation Tool

Feb 14, 2007

A Web-based tool that gives designers a detailed simulation of how Vishay Siliconix MOSFETs will perform thermally and be affected by adjacent components in a wide range of applications is now available on the Web site of Vishay Intertechnology, Inc. (NYSE:VSH).

Vishay�s new ThermaSim (available from is a free tool that helps designers speed time to market by allowing detailed thermal simulations to be performed before prototyping. ThermaSim is powered by Rebecca 3D software from Epsilon Ingenierie. Applicable to any power MOSFET application, ThermaSim will be especially useful in high-current, high-temperature applications such as automotive, fixed telecom, desktop and laptop computer, and industrial systems.

In a first for online MOSFET simulation, ThermaSim uses structurally detailed models of Vishay Siliconix power MOSFETs created using finite element analysis (FEA) techniques to increase the simulation�s accuracy. Designers also may define other heat-dissipating components and simulate their effect on the MOSFET�s thermal operation. Simulating these components ensures optimum device selection for application specifications and eliminates fallouts during thermal-performance line testing.

The tool is rich in features, and the setup is comprehensive. The designer constructs PCB size, layers, material, and copper spreading; sets pad size and solder quality; defines the heat sink size, material, and attachment methodology; and selects the power-dissipation profile, system temperature, air flow, and assembly orientation with respect to gravity to correctly account for the effect of convection. Designers also have a choice between steady-state and transient simulation.

Simulation results are emailed directly to the designer and can be downloaded into Microsoft Excel. Multiple results with varying product, package, or other input data can be merged within Excel to compare and examine trends. Thermal images are provided, and an MPEG video clip of the thermal image with transient simulation also is available. Simulations can be saved for modifications at a later date.

# # #

Vishay Intertechnology, Inc., a Fortune 1,000 Company listed on the NYSE (VSH), is one of the world's largest manufacturers of discrete semiconductors (diodes, rectifiers, transistors, and optoelectronics and selected ICs) and passive electronic components (resistors, capacitors, inductors, sensors, and transducers). These components are used in virtually all types of electronic devices and equipment in the industrial, computing, automotive, consumer, telecommunications, military, aerospace, and medical markets. Its product innovations, successful acquisition strategy, and ability to provide "one-stop shop" service have made Vishay a global industry leader. Vishay can be found on the Internet at

You must be a registered user to talk back to us.

More News from Vishay Intertechnology, Inc.

Jul 06, 2010 -

Vishay's New Mid-Range IR Sensors Feature Digital or Analog Output With Industry-Best Response Time of 300 Microseconds in Three Package Types

Feb 14, 2007 -

Vishay�s New VJ HVArc Guard� Surface-Mount C0G MLCCs Are Industry�s First Designed to Prevent Surface Arc-Over at High Voltages With Capacitance Ranges of 10 pF to 2700 pF

Feb 14, 2007 -

Vishay Offers Designers Free Online MOSFET Thermal-Simulation Tool

Feb 24, 2006 -

New Vishay Siliconix Boost Converter ICs Provide 85 % Efficiency at 500 mA Down to 1 mA From Battery Voltages as Low as 0.85 V

Feb 24, 2006 -

Vishay Siliconix Announces High-Speed Integrated MOSFET+Drivers

Feb 24, 2006 -

New Trio of Precision Low-Voltage Vishay Siliconix Analog Switching ICs

Dec 15, 2005 -

Vishay Siliconix Announces New PolarPAK Double-Sided Cooling MOSFETs

Dec 06, 2005 -

New Vishay Siliconix Slew-Rate-Controlled 1-A Load Switches

Dec 06, 2005 -

Vishay's New Dual-Output LDO Regulators With 48-Microamp Ground Current Convert 2.25-V to 5.5-V Inputs to Outputs as Low as 1.5 V at Current Levels of 150 mA and 300 mA

Nov 29, 2005 -

Vishay Siliconix Announces Two New 10-A Synchronous Buck Controller ICs

(15) more news from Vishay Intertechnology, Inc.

Vishay Offers Designers Free Online MOSFET Thermal-Simulation Tool news release has been viewed 1184 times

reflow oven profiler

Reflow Ovens thermal process improvement