Sunday, December 30, 2012

DDR2 - Freescale App Note 4215

MX28 Layout and Design Guidelines.

This application note has excellent advice for DDR2 designs.

Freescale DDR2 - AN4215.pdf

Friday, December 28, 2012

Right the First Time - Lee Ritchey

Right the first is an excellent PCB Design resource authored by Lee Ritchey.

Lee has made this book available for free download: Right the First Time:

Tuesday, December 11, 2012

Free DFM - Advanced Circuits

Advanced Circuits offers a Free DFM check for your designs.

I recently used Advanced Circuits for a quick turn and I was very happy with the service and results.

Monday, October 15, 2012

Microstrip and Stripline Design and Rise Time

MT-094.pdf (application/pdf Object)

When to use Controlled Impedance Traces - Analog Design

BGA - Routing for MicroStar Junior

BGA - Routing for MicroStar Junior

 Recommended routing for VFBGA-48 and VFBGA-56

Also some geometric dimensioning and tolerancing (GD & T) terms.


Saturday, October 6, 2012

MATING HEADER FOOTPRINTS

PIN ASSIGNMENTS FOR MATING HEADERS

Take note of where PIN 1 is . . . 

Tuesday, September 11, 2012

Tuesday, September 4, 2012

PCB Edge Inside Corner Radius


The inside radius of an inside corner is based on standard router bits.


Standard router bit diameters are .062", .093" and .100".

 The most common router bit used is the .062", so your inside radius would typically be .031".