There are many attributes which adds to the cost of printed circuit board assembly. Technology and technique used, number of components, package size, packaging, regulatory compliance , testing requirements and quantity are few factors which directly affects the costing. Non-direct factors like lack of design reviews, lack of DFA or DFM experience ( Design for Assembly and Design for manufacturing ) , lack of skilled worker and lack of testing equipments also affects the overall cost of printed circuit board assembly.
Important criteria should not be overlooked in the design state. While designing a product , DFM describes the process to be done to ensure the manufacturing cost is low and tries to eliminate the issues in the design phase itself. The design, size and the placements of components can have enormous effect and increases cost , if not done properly.
Another process which to be kept in mind in the design phase is DFA process. The c