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What Are Files Requirements for PCBA?

Posted:04:26 PM December 02, 2022 writer: NextPCB

What Are Files Requirements for PCBA

PCB Assembly needs a few files in order for us to start your PCBA work. Please send the following files to us in proper format. You will have two options to send these files to us, one is through our online PCB quote page, the other is to send via email at Support@nextpcb.com referring your order number and put the email Subject as “Files for Your Order Number ”

Gerber Files

The same Gerber files in format of RS-274X that you send to us for your PCB fabrication will be required to assemble your boards. As a minimum request, PCB assembler needs the files of three layers: Silkscreen, Copper (Track) and Solder Paste. So please make sure that all these files have been included and reviewed at your side. Of course we will also review your files before assembly starts to make sure all the information is complete and accurate for assemblies.

Note: Whether it is a Gerber, pcbdoc, cam, or brd file, make sure it is compressed and no larger than 40M.

  • File Extension: .rar or .zip
  • Maximum size: 40M

BOM (Bill Of Materials)

BOM is a list of parts used in manufacturing the end products. It shows what parts are needed to assemble the boards, and where these parts should be placed and assembled. We only accept the BOM in the format of .xls, xlsx. The BOM for Turn-key and Partial Turn-key orders may request a few more information than the BOM for consigned/kitted orders.

Note: Please make sure that the BOM files format are xls, xlsx and file size not more than 5M.

  • File Format: xls, xlsx
  • Maximum size: 5M

BOM for consigned/kitted orders may include following information::

Line#
Quantity Per Part Number
Reference Designator
Part Number
Part Description
Package
Type (Surface mount, Thru-hole or Hybrid)

BOM for Turn-key and Partial Turn-key orders may include following information:

Line#
Quantity Per Part Number
Reference Designator
Part Number
Part Description
Package
Type (Surface mount, Thru-hole or Hybrid)
Manufacturers Name
Manufacturers Part Number
Distributors Part Number

Click to Download a sample of BOM

Centroid File

Centroid is the special file for assembly used for quickly programming the assembly machines. This is also known as aka Insertion, Pick-N-Place, or XY Data. Some of the CAD tools will automatically generate this file and some not, but you may need to modify the file and then generate the Centroid file. The Centroid file describes the position and orientation of all the surface mount parts, which includes the reference designator, X and Y position, rotation and side of Board (Top or Bottom). Only surface mounting parts are listed in the Centroid.

Note: Please make sure that the Centroid files are be compressed and not more than 50M.

  • File Extension: .rar or .zip
  • Maximum size: 50M

Click to Download a sample of Centroid File

Others

In order for us to properly assemble your printed circuits boards, we strongly recommend you send all other documents or information related to the PCBs to us, which may include your assembly drawings, special assembly instructions, and even images or photos of your work. These information helps us better understand your assembly needs, correcting some ambiguous or even mistaken placements, and ends up with an excellent job. Send them to us, though normally not required by assemblers.

Tag: PCB Files
  • PCB
    Prototype
  • PCB
    Assembly
  • SMD
    Stencil

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Other Quantities:(quantity*length*width is greater than 10㎡)

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