Here's a Site that might be of help to those, wanting to Build, Learn, or have their Custom PCB Designs Built for them. Victor, found my Blog and wrote me about his site. And it looks like the have some good info and services to offer. Check em out... and there plenty more links below the post...

Don

San Francisco Circuits PCB School

The purpose of the PCB school is to help educate engineers, technicians and buyers on printed circuit boards.

Our team of experts in the PCB industries have been proudly educating other printed circuit professionals since 2005. With this section, we hope to provide the opportunity to gain a comprehensive grasp of concepts in a shorter period of time, to remain up to date in the field, and/or to acquire the technical knowledge to begin or advance their skills.

We offer access to knowledge to everyone who needs them and wants to learn the technologies available in PCB design, PCB fabrication and PCB assembly.

PCB School

Read More...
http://www.sfcircuits.com/pcb-school

Printed Circuit Board Design and Layout

San Francisco Circuits - Your Bay Area PCB Designer & PCB Layout Services

Because of our strong network of the best PCB design professionals, San Francisco Circuits provides exceptional printed circuit board design and PCB layout services. Our veteran designers can do the most complicated PCB designs imaginable. We are experts in RF/Microwave, mixed signal-digital and analog, huge FPGA layouts & FPGA high layer, and high current power supplies. Our high tech specialties make us the ideal solution for any project size when looking for a Bay Area PCB designer.

New PCB Prototype Design & PCB Design Modifications

Whether you need a new design or modification to an existing PCB design product, our expert PCB designers will provide you with error-free printed circuit board design and PCB layout solutions from simple 2 layer PCB designs to complex, high density, 30+ layers.

High Heat Circuits - PCB Design for High-Temperature Applications

As is well known, designers are squeezing ever more performance out of printed circuit boards. Power densities are on the rise, and with them, high temperatures that can wreak havoc on conductors and dielectrics. Elevated temperatures - whether from I²R losses or environmental factors - affect thermal and electrical impedances, causing erratic system performance, if not outright failure. Differences in thermal expansion rates – a measure of the tendency of a material to expand when heated and shrink when cooled – between conductors and dielectrics generate mechanical stresses that cause cracking and connection failures, especially if the boards are subject to cyclic heating and cooling. If the temperature is high enough, the dielectric can lose its structural integrity altogether, knocking over the first domino in a cascade of trouble.

Of course, heat-generation has always been a factor in PCB performance, and designers are accustomed to including heat sinks into their PCBs, but the demands of today’s high power-density designs frequently overwhelm traditional PCB heat-management practices.

Mitigating the effects of high temperatures have far-reaching implications, not just for the performance and reliability of PCBs, but also for such factors as:

Component (or system) weight
Application size
Cost
Power requirements

PCB Assembly

Circuit Board Assembly

PCB Assembly is a process that requires knowledge not just of PCB components and assembly but also of printed circuit board design, PCB fabrication and a strong understanding of the final product. Circuit board assembly is just one piece of the puzzle to delivering the perfect product the first time.

San Francisco Circuits is a one-stop solution for all circuit board services so we are often entrenched with the PCB production process from design to assembly. Through our strong network of well-proven circuit assembly and manufacturing partners, we can provide the most advanced and nearly limitless capabilities for your prototype or production PCB application. Save yourself the trouble that comes with the procurement process and dealing with multiple components vendors. Our experts will find you the best parts for your final product.

We offer the following PCB assembly services: