Solder Mask Dam




The mask dam between pads will help to prevent accidental solder bridging during assembly.
If the soldermask dam is too small, we will remove the dam directly.
If you want better solder mask dam, please choose pcb color green, it will get better performance than other colors.
If you choose 
[0.1mm↑] for solder mask dam, the min dam for green is 0.1mm, for red, yellow, blue is 0.12mm, for white, black is 0.15mm.

Tips:
1. For advanced ICs, the pins are very small and close, it is very common in high integration design that there is no solder mask dam between pins.
2. It may be a problem that no solder mask dam between pins when you solder them manually. But it is not a problem any more when you use reflow solder machine. They will use stencil to control the tin cream.
3. We have reflow solder machine. Please try our PCBA service if you have problems wtih small pins.

Fusion Technical Support

  1. What is Gerber file?
  2. What are the PCB panelization rules?
  3. How to generate the Gerber (manufacturing) files?
  4. What is the correct way to draw the silkscreen on the bottom side?
  5. My PCB does not require Solder Mask, what should I do?
  6. My PCB does not require Drill Holes, what should i do ?
  7. Which layer should I use in EAGLE for milling?
  8. What is the depth and width of the v-cuts/grooves?
  9. I don't want silkscreen on my PCBs, how can I proceed with a PCB Assembly order?
  10. What are the dimensions for Dielectric Separation thickness?
  11. What is the thickness of the inner copper layers?
  12. What are Blind and Buried Vias?
  13. What is the The Min Track/Spacing for 1oz./2oz./3oz. Copper weight
  14. What are Plated Half-Holes/Castellated Holes?
  15. How do I design non-plated through holes?
  16. What PCB materials are available in Seeed Fusion?
  17. What is the thickness of Fusion PCB?
  18. What PCB surface finishes are offered in Seeed Fusion?
  19. What color options are available for the solder mask/resist?
  20. What is the PCB copper weight?
  21. What is Impedance Control?
  22. PCB quantity
  23. How to generate Gerber files from PCBE
  24. How to generate Gerber files from Eagle
  25. How to generate Gerber files in Altium Designer
  26. How to generate Gerber files from CircuitMaker
  27. How to generate Gerber files from KiCAD
  28. How to generate Gerber files from DipTrace
  29. How to generate Gerber files from Proteus
  30. How to generate Gerber files from DesignSpark
  31. How to convert drilling layer from Gerber to Excellon format in CAM350
  32. Recommend size for BGA
  33. Solder Mask Dam
  34. What is the difference between Fusion standard PCB and Fusion Advanced PCB?
  35. What should i do when my Gerber files over too big (over 4MB)?

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