PCB-related links

Associations:

EIA www.eia.org

IEEE standards.ieee.org

IPC www.ipc.org

JEDEC www.jedec.org

Catalogues:

Digi-Key www.digikey.com

Farnell www.farnellcomponents.com

RS www.rswww.com

Other Links:

Electronic Engineer's Master Online www.eem.com

IPC Calculator www.ipc.org

PCBstandards http://www.pcbstandards.com/

UltraCAD Design www.ultracad.com