The document is a presentation from Select Circuits that discusses their printed circuit board (PCB) manufacturing process. It covers the various stages of PCB production including inner layer layup, materials used, drilling, silk screening, solder masking, heat sinks, surface finishes, and gold plating of connectors. It also provides information on Select Circuits' prototype, small run, and large volume production capabilities.

1. Select CircuitsTel. (714) 825-1090 Fax (714) 825-10953700 W. Segerstrom Ave.Santa Ana CA, 92704SelectPCB@AOL.comwww.SelectCircuits.com10/2/08Select Circuits Presentation / Created by Joe Lara / Document # 001-001-A1

2. PCB Process10/2/08Select Circuits Presentation / Created by Joe Lara / Document # 001-001-A2

3. 10/2/08Select Circuits Presentation / Created by Joe Lara / Document # 001-001-A3

4. Inner Layers Layup10/2/08Select Circuits Presentation / Created by Joe Lara / Document # 001-001-A4

5. Materials10/2/08Select Circuits Presentation / Created by Joe Lara / Document # 001-001-A5

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7. DrillingA differentiation between plated-through (pth) and non-plated-through holes (npth) in your data is very important! Please export a single drill-file for pth and npth drills, each (e.g. Excellon or Sieb&Meyer). This rule applies also for blind and buried vias10/2/08Select Circuits Presentation / Created by Joe Lara / Document # 001-001-A7

8. Silk ScreenThe marking print eases assembly and additionally allows to apply a revision number on the printed circuit board. Multi PCB offers white and black marking print.10/2/08Select Circuits Presentation / Created by Joe Lara / Document # 001-001-A8

9. Solder MaskPlated-through-holes (pth) can, of course, be exempted completely from solderstop (e.g. test points, etc.). In General, you should cover pths with solderstop to avoid solder-bridges!10/2/08Select Circuits Presentation / Created by Joe Lara / Document # 001-001-A9

10. Solder MaskPlated-through-holes (pth) can, of course, be exempted completely from solderstop (e.g. test points, etc.). In General, you should cover pths with solderstop to avoid solder-bridges!10/2/08Select Circuits Presentation / Created by Joe Lara / Document # 001-001-A10

11. Heat SinkHeat Sink help transfer heat to an area where it can be better dissipated. 10/2/08Select Circuits Presentation / Created by Joe Lara / Document # 001-001-A11

12. Solder MaskVariation in colors help distinguish between part numbers and even revisions.10/2/08Select Circuits Presentation / Created by Joe Lara / Document # 001-001-A12

13. V-ScoringV-Scoring is used to prepare printed circuit boards for mechanical separation. In this process, the PCBs get a pull linkage, done with precise cutters.10/2/08Select Circuits Presentation / Created by Joe Lara / Document # 001-001-A13

14. Scoring AngelsScoring is only possible in straight lines, horizontal and vertical, from and to PCB outer edges We advise to score only PCBs down to a minimum thickness of 1mm, for stability reasons (thinner PCBs: notch milling)10/2/08Select Circuits Presentation / Created by Joe Lara / Document # 001-001-A14

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16. V-ScoringCut-Outs as well as Contours are normally milled.10/2/08Select Circuits Presentation / Created by Joe Lara / Document # 001-001-A16

17. H.A.L.HAL (Hot Air Levelling) is the most tried surface finish. It is suitable for standard SMD but for finepitch applications, a chemical surface is preferable10/2/08Select Circuits Presentation / Created by Joe Lara / Document # 001-001-A17

18. CopperA very common surface with characteristics closely resembling those of HAL. Due to a faster oxidation process, shelf life depends strongly on temperature and packaging. Fingerprints on the surface should be avoided at all costs! 10/2/08Select Circuits Presentation / Created by Joe Lara / Document # 001-001-A18

19. SilverA surface very similar to chemical tin, with better attributes at oxidation and for contact appliances.10/2/08Select Circuits Presentation / Created by Joe Lara / Document # 001-001-A19

20. GoldChemical gold, as well as chemical tin and silver, has a very planar surface and good oxidation resistance. It is suited splendidly for finepitch and bonding (alu wire) appliances. Chemical gold has replaced carbon print for keyboards. 10/2/08Select Circuits Presentation / Created by Joe Lara / Document # 001-001-A20

21. PC SlotsPC / PCI slots are f.e. used to connect printed circuit boards directly to main boards (motherboards). It is differentiated between PC-AT standard with a grid space of 2.54mm and PCI standard with a grid space of 1.27mm between the gold fingers. 10/2/08Select Circuits Presentation / Created by Joe Lara / Document # 001-001-A21

22. ChamferingChamfering of the gold fingers is to be avoided at all costs, therefore they need to have a spacing of min. 0.7mm from the PCB edge. We advise you to connect the gold-fingers with 200µm tracks to the edge (see sketch). Due to the production process, gold fingers are always connected with the edge like this.10/2/08Select Circuits Presentation / Created by Joe Lara / Document # 001-001-A22

23. 23Prototype/NPISelect Circuits USASmall RunAssemblyEnd UserOff ShoreMed. RunLarge Run10/2/08Select Circuits Presentation / Created by Joe Lara / Document # 001-001-A

24. 10/2/08Select Circuits Presentation / Created by Joe Lara / Document # 001-001-A24 100,000+

25. 12 Weeks+* Credit: Freight Up to 100,000 pcs

26. 4-8 Week Delivery

27. Credit: NPI+ Free Shipping* Up to 50,000 pcs.* 2-3 Week Delivery* Credit: NPI* 1 to 10,000 pcs. 24 hr Expedite

28. Credit towards larger order*Select CircuitsTel. (714) 825-1090 Fax (714) 825-10953700 W. Segerstrom Ave.Santa Ana CA, 92704SelectPCB@AOL.comwww.SelectCircuits.com10/2/08Select Circuits Presentation / Created by Joe Lara / Document # 001-001-A25