What newbies of prototype PCB assembly need to know?

Designing the layout and requirements of the prototype is only the first step in PCB development. Once the design is complete and you want to use PCB layout / design software tools for analysis, the next step is to assemble the prototype board. Many engineers turn to third-party vendors to make printed circuit boards and assemblies-even very small numbers of prototypes.
Why is outsourcing more common in PCB assembly? PCB boards are rapidly developing in the technical application of assembly and mass production of final products. Requirements such as multilayer manufacturing, high-density interconnect boards (HDI), laser direct imaging (LDI), and manufacturing using flexible or flexible rigid materials make in-house manufacturing an expensive proposition even for prototypes.
Most PCB designers do not immediately deal with such manufacturing capabilities, but instead turn to assembly and manufacturing experts to convert their prototype PCB designs into work boards.
What do I need for a PCB prototype assembler?
Before PCB assemblers turn prototype designs into work products, most people need all the information related to the project:
Bill of Materials (BOM) records a complete list of required materials
Prototypes required for any special manufacturing requirements (surface mount) (usually multiple prototypes are required for various test cases) Technology, through-hole, single or double sided, multilayer, lead-free butt
Schedule required for project turnover
Armed with this information, future PCB assemblers can generate quotes for their services and can also determine if time requirements can be met.
Select PCB Prototype Assembler
Choosing the right prototyping resources is a process that requires several factors to review prospective suppliers:
Does the supplier have design-related technical experience? (Handling specific materials, multilayer structures, HDI and other requirements will require specialized equipment and expertise)
Does the manufacturer perform all assembly in-house, or does it subcontract all or part of the structure? Sending work outside can cause delays or lack of control over the final result.
Are the components required in the design available to the manufacturer?
Ensure that the supplier can deliver to the project timeline. In many cases, being behind schedule due to assembly delays may be unacceptable.