1. Daniel Miller Joe Quesada Justine Lazo
Printed Circuit Board
Daniel Miller
Joe Quesada
Justine Lazo

2. Overview
What is a PCB?
Why use a PCB?
How do I make a PCB?

3. Printed Circuit Board Circuit connects components through board
Made of alternating layers of conducting and insulating materials

4. Why PCB? Features Drawbacks Surprisingly Affordable Highly reliable
Compact
Drawbacks
Requires more layout than other board types
Higher initial cost than wire wrap or point-to- point construction

5. PCB Design Steps Design the circuit Place the components
Route the wires
Manufacture

6. EDA Software PCB design software package Examples:
Design the circuit (Schematics editor)
Place the components (PCB editor)
Route the wires (Autorouter module)
Examples:
EAGLE
ExpressPCB
Electronic Design Automation

7. Schematic Capture Pin in/outs Components Interconnections
Easily Readable
High-Level Block Diagram
All pictures of schematics and EAGLE screenshots from
and

8. Placement of Components
Rat’s Nest
Error wire

9. Placement of Components
Place big components first- e.g. microcontroller
Place components in separate functional groups
Put a ground plane under all components

10. Signal Routing Component Placement
Surface mount
Top and bottom planes
Minimal routing area
Through-hole mounted
All components on same side
Reduces routing area on all planes

11. Signal Routing Traces are wires connecting components
Traces can be routed through multiple layers

12. Vias and Pads Vias are connections between layers
Pads are copper areas for pin connections

13. Manufacturing Files Gerber Files Drill Files
Industry standard file format to describe circuits
Generated by PCB design software
Contains all necessary info to manufacture a circuit board (Traces, Pads, Silkscreen, etc.)
Drill Files
Describes the location and size of holes
Zipped with Gerber files and sent to manufacturer

14. Viewplot Check

15. Cost Estimate

16. Cost Estimate

17. Summary PCBs allow for portable and reliable circuits
Designed in EDA Software
Design the circuit
Place the components
Route the wires
Manufacture
Price varies based on size and urgency

18. References http://saturnpcb.com/pcb_services.htm
components.html
proto-boards/pricing.aspx

19. Questions?