November 14, 2014
Teledyne Advanced Electronic Solutions needs at a minimum assembly drawings, Gerber files, fabrication drawings, and Bill of Material (BOM) for each assembly to be built.
- Assembly drawings should be in PDF format; CAD format (.dxf or .dwg) may also be used. Most customers prefer PDF format so that data integrity can be maintained. The drawing should provide notes that specify the IPC or NASA requirements, envelope limitations such as maximum component height, conformal coating requirements, solder material requirements, flag notes for requirements such as bonding, etc.
- The Bill of Material (BOM) should be provided in an electronic (MS Excel) format for easy upload into our quoting software. The manufacturer’s part number, alternate part numbers, reference designator and/or find numbers, quantity of use, etc should be included. The BOM may also include specific requirements like flux and cleaning specifications, solder requirements, etc listed as 0 user items.
- Gerber files should be in RS-274X or ODB++ format. ODB++ provides additional information such as CAD data, fabrication information, etc that may be useful. Fabrication drawings will specify the requirements, materials and standards required for fabrication of the Printed Circuit Board (PCB). Gerber and fabrication drawings are absolutely required if Teledyne EMS is going to obtain a material quote for the PCB. A labor-only quote may be possible if only drawings are available.
- ODB++ or CAD data in ASCII format will be needed before production to program placement equipment, Automated Solder and Optical Inspection (AOI/SPI), In-Circuit Test or Flying Probe, etc. These types of data are also needed for Manufacturability and Testability analysis.
- If test is required, then the type of test (In-circuit, Flying Probe, Functional, Environmental, etc) should be specified. The test specifications should be included along with any Acceptance Test Procedures (ATP) that must be performed. ODB++ or CAD data in ASCII format along with schematic diagrams and other operational information may be needed to provide test estimates. If test development is required, a Test Requirements Document should be provided.
- Any requirements for forming, tinning, component programming, or other part modification, etc should include the appropriate altered item drawing or specification control drawing. If there are specific sources approved for these services, the altered item drawings should include contact information for these sources.
- Fabricated sub-assemblies like metal parts, boxes, CCA subassemblies, etc should have the documentation required to build and/or fully inspect these units.