PCB Design and Fabrication Institute

Shelf Life Identification of a PCB.

David Duross — Sat, 05 Nov 2011 23:41:36 +0000

How does one identify the shelf life of a printed circuit board? By convention the printed circuit board fabricator shall mark the printed circuit board with a four digit date code. The date code consists of a two digit week number ranging from 01 (the 1st week in January) to 52 (the last week in [...]

Blog Updates.

David Duross — Thu, 01 Sep 2011 22:12:46 +0000

I thought I would take a few minutes to clarify and highlight a few recent changes that I’ve made to the site. I’ve added a site plugin named WPtouch that makes pcbdesignschool.com mobile device friendly. I’ve tried to use my Droid smart phone to show friends my content. I’ll be the first to admit that [...]

What damage does the assembly process do to a pcb? (part 6)

David Duross — Wed, 31 Aug 2011 18:09:53 +0000

In this final planned post of the “What damage does the assembly process do to a pcb?” series we shall discuss copper diffusion. What is copper diffusion? When soldering, copper diffusion is a process in which copper atoms are removed from the copper surface and redistributed into the solder over a wide area. Back in [...]