Each product receives a unique, quantity-dependent quotation. The manufacturing quotation is determined based on the time and material costs involved in a successful production process, calculated using the cycle time and material cost of the product.
To prepare a manufacturing quotation, the following files are mandatory: Gerber files, P&P file, and BoM list. Additionally, it is highly beneficial if we receive assembly drawings and instructions.
When starting production, we may also require additional information, such as the designated contact person, production quantities, expected manufacturing time, and priorities. It is also useful to have a confidentiality agreement available if necessary.
We prefer to handle component management separately. This document outlines the client’s expectations, specifying which materials will be provided by whom and how. It also addresses material substitutions, specifying whether and how certain materials can be replaced. For example, can only components with identical part numbers be used, or can parts be upgraded to better specifications? Are certain manufacturers’ components excluded from use?
During the quotation preparation, we always draft some form of documentation, which will later serve as the basis for the manufacturing documentation during the order process. This draft defines the parameters of the quotation, ensuring both parties have a clear understanding of all necessary information and costs.
What are the required files, and what should you know about them?
- Gerber Files:
Gerber files contain the manufacturing data for the PCBs intended for assembly. These include copper layer drawings, outline drawings, machining and drilling data, solder mask layers, paste files, layer stack-up, and technology descriptions. Additionally, CAD and 2D/3D technical drawings may also be included. - BoM (Bill of Materials):
The BoM list includes all materials required for the product. It serves as a summary or detailed list specifying which components are installed in specific positions on the product. The BoM may also include related items such as enclosures, labels, fasteners, and accessories. - Pick & Place (P&P) File:
The P&P file specifies the placement of components for assembly relative to a reference point. Mandatory data fields include:- Component position (reference designator)
- Description of value (value)
- X-coordinate
- Y-coordinate
- Component rotation (angle)
- Assembly side (side)
- Assembly Drawing:
This graphical file visually demonstrates the correct assembly orientation of individual components. It helps prevent incorrect assembly orientations. While some prefer to print assembly directions on the PCB, we recommend preparing this file separately as well. - Manufacturing Process Documentation:
Manufacturing process documentation can take many forms, including dimensional drawings of the assembled boards and their production setups, fiducial plans, paste printing instructions, assembly instructions, calibration procedures, or any other descriptions related to the product’s manufacturing process.
This documentation ensures clarity and efficiency throughout the manufacturing process, preventing delays and errors.
