PCB assembly: Inquiry checklist
What data do we need to manufacture your electronics?
In order to process your request as quickly as possible, we need the following information:
- the bill of materials (BOM)
- the assembly plan for each assembly side and
- the assembly data
If you do not have all the data yet, no problem, just call us, we will be happy to help you: +49 (0)30 442 73 18
To make things as easy as possible for you, we work– in addition to conventionally provided data – also directly with the information from your CAD programs such as Eagle, Altium Designer, Target3001 and others.
In both cases, the required information must be present in the files or be able to be generated from them.
The bill of materials (BOM) – component information
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Number of pieces, quantity per position
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Type/Value (e.g. 1k3, 10nF, 1N4005G, MAX232ACWE+, etc.)
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Design (e.g. 0603, 1206, Elko SMD design-C, etc.)
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Component names or designations (e.g. R1, C1, D1, IC1, etc.)
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Additional component information (e.g. tolerance, dielectric, etc.)
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Supplier / manufacturer (for material procurement)
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Order number / manufacturer article number (when purchasing materials)
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Will be provided: yes / no
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Will be equipped: yes / no
Of course, the parts list can also contain further information.
General statements such as “all chip capacities X7R” or “all resistors 1% tolerance” are very helpful. Please make sure to specify the component types, preferably with the exact manufacturer name.
The assembly plan
The assembly plan is an indispensable basis for the quotation phase and for the preparation of data for production. It serves as a clear specification and is used for checking during the preparation phase of your data. The assembly plan should be provided in an easy-to-read electronic form as a PDF file or in a similar format and should contain the following information:
You can of course also provide us with the data as above in Eagle, Protel,Altium Designer, Target3001 and others. We will then generate the required plan for you.
However, the above information must be entered into your project with the correct footprints.
- Component names or designations (e.g. IC1, C1, R1, D1, etc.)
- Polarity marking (e.g. pin 1, anode, +, etc.)
- Position and component graphics
The assembly data (pick & place data)
The information for the PCB assembly is stored here. This data is generated from your CAD system. The result should be available electronically in Excel (or CSV) format and contain the following information about the components to be assembled:
- Component name (e.g. R1, C1, IC1, etc.)
- X coordinate (e.g. 42.35)
- Y coordinate (e.g. 21.35)
- Rotation angle (e.g. 270)
- Component value (e.g. 10nF)
- Design (e.g. C0805)
- Component side (e.g. top / bottom)
Fiducial markers
These markings (fiducials) are essential for paste printing and in the assembly process in automatic production systems. They are required to record the actual position of the circuit board and to calculate the deviations from the circuit board to the stencil or to the assembly position.