Files

1. An all-inclusive and standardized BOM (Bill of Materials) is needed, which contains original material numbers (that can be traced when specification sheets are required) and coordinate files.
2. Gerber files must meet particular requirements.
3. PCB overlay shall be definite and not ambiguous, with separate polarity marks (as indicated in the overlay layer of the PCB gerber file).
4. Explicit needs should be stated, like component height and angle or whether they need to be shortened, among other things.
5. Complete standard designs must be provided for any needs pertaining to the process of mechanical parts or wire harnesses, if applicable.
6. Other documents that are mandatory should follow the given information.

Standards

1. Verify assembly standards, taking into account any applicable IPC class requirements.
2. The criteria for assembly must specify if it is lead-free, RoHS compliant, etc.
3. Check whether a particular degree of cleanliness calls for a particular assembly and cleaning procedure.
4. Any further unique criteria or specifications supplied by the customer.

Materials

1. Check if the PCB panelization is reasonable and confirm if any part of the board extends outward and measures to ensure proper dimensioning for production (MIN: 50 L * 50 W, MAX: 610 L * 510 W).
2. There will be a need to use small package components such as 01005/0201/0402/0603.
3. Assure that specification sheets are available for key components to ascertain their polarity, production conditions, moisture sensitivity level, reflow temperature standards etc.
4. Bulk materials need to be protected well so as not to deform or get damaged during transportation.
5. In case of small batch orders, the tape and reel should be at least up to 20 cm of material.

Production

1. Determine if conformal coating or potting is required.
2. Ascertain whether testing or programming is needed.
3. Verify if cleaning is necessary.
4. Check if laser marking or barcoding is required.
5. Determine the need for assembly or aging test.

Fixtures

1. Depaneling Fixtures: Stamp-hole connected (No fixtures are needed for panelization).
2. SMT Fixtures: Flexible boards, rigid-flex boards, with thickness less than 0.8 mm. Materials that extend beyond board edge need to be SMT production . Inadequate sizes of boards which fail to meet equipment production standards. PCBs in irregular shapes without process edges or its components within 3 mm of the board edge. For larger-sized single boards that require the PCB to remain unwarped.
3. Test Fixtures: Required for testing (customer-supplied).
4. Press-Fit Fixtures: For materials requiring press-fitting in the BOM.
5. Wave Soldering Fixtures: For plug-in components in the BOM exceeding 100 pcs.
6. Assembly Fixtures: Facilitate product assembly, material forming, potting, etc.
7. Conformal Coating Fixtures: For spraying conformal coatings.
8. Hand Soldering Fixtures: For materials with special angles and heights that require fixture positioning assistance
9. Programming Fixtures: For materials needs programming (customer-supplied).
10. Other Fixtures: For other special requirements, fixture assistance needs.

Packaging

1. Standard packaging includes anti-static foam and anti-static bubble bags.
2. Whether custom packaging materials or trays are needed.
3. Are anti-static bags or vacuum packing mandatory?
4. Whether single board shipment is necessary.