PCB

Some valuable information and lessons learned for ordering the boards.

Gerber files

Gerber files of Open-BLDC V0.1 can be found here.

Quote settings

Settings used for ordering the Open-BLDC V0.1 boards at pcbcard:

• Material: FR4
• Material Details: Standard Tg 140C
• Layers: 2
• Board Size: 94.488mm x 59.7154mm
• Different Designs in Panel: 3
• Route Process: Tab Route
• Thikness: 1.6mm
• Surface Finish: ENIG - Electroless Nickle/Immersion Gold - RoHS⁽¹⁾
• Copper Weight: 35um
• Min. Tracing/Spacing: 0.2mm
• Min. Annular Ring: 0.1mm⁽²⁾
• Smallest Holes: 0.4mm
• Holes Numbers: Under 300
• Surface Mount: 2 sides
• Soldermask: Both Sides
• Peelable Soldermask: None
• Soldermask Color: Any
• Matt Color: If applicable
• Silkscreen Legend: None
• Silkscreen Legend Color: None
• Gold Fingers: No
• Gold Fingers Chamfer: No
• Slots in Board: No Slot in Board
• Testing: Yes⁽³⁾
• UL Marking: No
• Date Code Marking: No

⁽¹⁾ You want to take ENIG as finish and not "Hot air solder leveling" because the Solderstop tends to go off when using HASL.
⁽²⁾ The annular rings on Open-BLDC V0.1 are 0.2mm but pcbcart does not have that option.
⁽³⁾ You really really really want to do that. In any pcb's order you do to avoid problems and headaches afterwords.

Lessons learned

• Do not send gerber files for layers that are not stated in the quote (when you say that you don't want silkscreen don't send the gerber file)
• The gerber files currently generated by the makefiles in Open-BLDC, don't have tab routing information, they can be added by the manufacturer but it takes time.

Price

When calculating price of PCB order at PCBCART you should consider:

• Quote price
• Shipping costs
• Import turnover tax (In Germany 19%)

Todo's for future

• Find a way to add tab routing information to gerber files using a makefile
• Consider if really all holes have to be plated through. If not remove that information from the text on the fab layer.