Our selection of Free to Use Tools for Electronics Engineers:

DesignSpark Mechanical Software

Design and make things in 3D like never before. DesignSpark Mechanical is a free mechanical CAD software, which enables users to rapidly prototype or reverse engineer any physical object.
• Access a huge library of 3D models
• Generate Bill-of-Materials and get instant online quotes
• Import & Export industry standard file formats (including STL, SKP, OBJ, AutoCAD DXF, etc.)
• Design without time or file size limitations

DesignSpark Electrical Software

DesignSpark Electrical is our free electrical CAD software. This is a bespoke electrical CAD solution for engineering professionals looking to save time and create error-free designs.
• Comprehensive parts library
• Save time with automated reports and process including wire and component numbering
• Live parts price and availability along with simple Bill of Materials (BoM) generation
• Unlimited number of projects, symbols and connections

DesignSpark PCB Software

DesignSpark PCB is the world’s most accessible, free electronics design software, turning your circuit ideas into testable boards, faster.
• No limitation on your schematic size so you should have no limitation on creating your PCB design
• Create your own libraries or use our extensive library
• Import and Output files in the format you need
• Create BOMs in a format you require

DesignSpark Obsolescence Manage

A free engineering resource specifically built to proactively manage component obsolescence risk across the RS range, providing alternative solutions to problem components.
• Build your parts list
• Manage your lifecycle risk
• Select your alternatives

Texas Instruments Webench® Designer

TI WEBENCH® Design Environments are unique and powerful software tools that deliver customized power, lighting, filtering, clocking and sensing designs in seconds. These easy-to-use tools help you generate, optimize and simulate designs that conform to your unique specifications. They allow you to make value-based tradeoffs at a design, system and supply chain level before your design is committed to production.

Ohm's Law Calculator

See how the equation form of Ohm's law relates to a simple circuit. Adjust the voltage and resistance, and see the current change according to Ohm's law.

Vicor Powerbench

Power BenchTM, a suite of advanced power design tools, enables power designers to specify on-line and verify in real time the performance and attributes of custom power design solutions.

Scientific Calculator

Online Scientific Notation Calculator. Solve advanced problems in Physics, Mathematics and Engineering. Math Expression Renderer, Plots, Unit Converter, Equation Solver, Complex Numbers, Calculation History.

Littelfuse Fuse Selection Tool

Choose the optimal electronic board-mounted fuse for a variety of applications. System-level, power, and automotive-style fuses not included.

Littelfuse ESD Selection Tool

Identify the most appropriate TVS Diode Arrays (SPA® silicon protection arrays) for protection from ESD and lightning-induced surges.