LED PCB board design Guidelines [Part 6]
Previous post, we have introduced many tips on LED PCB board design.
This post we are going to discuss LED PCB board tip.
Did you know the tip of the Unit during your LED PCB board design?
If you communicate with other companies like PCB manufacturers or PCB designer companies, you must consider the unit exchange of your your LED PCB board.
Continue to read the tip of the LED PCB board design Guidelines [Part 6].
Never Export English-Unit Gerber or Drill Files at 2:3 Decimal Resolution
2:3 was a default setting back in the days when file size needed to be kept small,
for moving data files on flexible disks of limited capacity.
It is not appropriate for today’s dense designs.
Low resolution truncates off the last significant digit of your feature’s location.
Particularly on designs which use 0.5mm (. 0197”) surface mount devices.
Or large numbers of randomly-placed vias, the loss of this digit can cause a design which is perfect in its native CAD environment to yield from dozens to hundreds of Gerber spacing violations as you.0197” pad spacing is rounded to either.019” or.020” because of the missing digit.
Inadequate resolution can also play havoc with arc endpoints and polygon borders.
Always use at least 2:5 inch, or 3:3 metric.
From epectec, original author have all right.
Original title:TOP 10 PRINTED CIRCUIT BOARD DESIGN CHECKS
MCPCB experts recommend top 10 design tips:
- Avoid Placing Vias at the End of SMT Pads
- Do Not Route Wide Traces Into Narrow SMT Pads
- Do Not Route Traces Along Sides of SMT Pads.
- Route All Traces at 90 Degrees or Greater
- Don’t Place Components Too Close to the PCB Outline
- Never Export English-Unit Gerber or Drill Files at 2:3 Decimal Resolution
- Size Your Solder Mask Openings Consistently
- Always Use Direct Connect for Vias
- Size Your Component Hole Thermal Pads Appropriately
- Allow Enough Clearance Between Unsupported PTHs and Adjacent Copper Features on Internal Layers