10 PCB design software or tool

You need a PCB design software or tool to put in practice the new electronic project you’ve just designed? So, we present you 10 of the best free PCB layout software tools available on the internet.

RoHS Category 8 and Category 9 products

Medical devices, and monitoring and control instruments comprise RoHS Category 8 and Category 9 products respectively.

What’s Restriction of Hazardous Substances

In an effort to close RoHS loopholes, in May 2006 the European Commission was asked to review two currently excluded product categories

What’s Multiwire boards?

Multiwire is a patented technique of interconnection which uses machine-routed insulated wires embedded in a non-conducting matrix (often plastic resin).

PCB Surface-mount technology

Components were mechanically redesigned to have small metal tabs or end caps that could be soldered directly on to the PCB surface.

Current and Track

Current Carrying Capacity of PCB tracks
The current carrying capacity of a PCB track is fundamentally determined by two parameters:

Heat generated by the track. This is a product of the current flowing though the track and the voltage drop across the track (P=IV), essentially the electrical resistance of [...]

PCB & RoHS

Introduction
The European Union has implemented two directives targeting environmental impact. These directives are WEEE (Waste Electronics and Electronic Equipment) and RoHS (Restriction of Hazardous Substances).
This push for more environmentally friendly products has addressed two problems inherent with PCB technology. The first problem relates to the presence [...]

PCB Manufacturing

Conducting layers are typically made of thin copper foil. Insulating layers are typically laminated together with epoxy resin. The board is typically green in color and made of materials like polytetrafluoroethylene

Printed circuit board

A printed circuit board, or PCB, is used to mechanically support and electrically connect electronic components using conductive pathways, or traces, etched from copper sheets laminated onto a non-conductive substrate.

DIY Printed circuit board

video DIY Printed circuit board
I want to share my personal experience with heat toner transfer method of making PCB.
It’s easy to learn for beginners and it delivers very good result for fair price.
Do fast prototyping with fun!
Enjoy!
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To get more info about LIQUID TIN see Spec sheet at