PCB Design and Fab
CircuiTree
PCB Design 007 (and its related online mags)
SMT/EMS007
ECN (Electronic Components News
Power Electronics Technology
ESD (Embedded Systems Design)(under EE Times)
Evaluation Engineering
Nasa Tech Briefs (publications on left side)
RTC (Embedded stuff)
Element 14 Technology First Journal(I have a few issues but can't find a subscribe link, forget how I got it)