Frequently Asked Questions
1) What do you require in order to produce an assembly quotation?
- BOM including full manufacturer's part numbers, manufacturer details and component references.
- Gerber data with ODB++ or suitable CAD data
- Assembly drawings
- Any mechanical assembly instructions
- Test specification
- Firmware if applicable
- Desired delivery schedule
- Assembly Standards required e.g. IPC -A- 610 Class 1
- Quality Standards, required e.g. ISO 9001, ISO 13485
2) Can you manufacture and assemble RoHS and non-RoHS compliant boards?
Yes, we have separate process for RoHS and non-RoHS assembly.
3) What is the maximum board size you can handle?
550 mm x 460 mm
4) Can you help us develop our design?
Whilst we are not involved with design in house, we work with several partners on layout, product design and development.
5) Can you offer full component level traceability?
Yes, this is critical for many of the products we supply, especially in the medical, aerospace and defence markets.
6) Is there anything we can do to reduce production costs?
- Schedule in larger batch quantities.
- Design boards so that they are optimised for assembly i.e. if possible put all components on one side, if this is not possible keep all the chips and heavier components on one side and lighter parts such as resistors and capacitors on side 2
- Try to minimise number of types of components used i.e. not using 10k 1% 0805 resistor and a 10K 1% 0603 resistor.
- Try and reduce the number of layers within the board.
- Sign up to G&B's MRP controlled database for consolidated buying.
- Allow areas on profile for 'breakout' to assist with panelisation enabling multiple board to be built simultaneously.
- Do not use tighter design rules than necessary. This will improve manufacturing yields for the PCB and assembly.
- Consider automatic testing methods i.e. boundary scan, or flying probe ATE to speed up testing of assembled boards.
Electronic Manufacturing Services (EMS)