What Is Turnkey PCB Assembly? Scope & Quote Files

Full turnkey, partial turnkey and assembly using supplied materials.

The practical difference is who provides the boards and components. Make those responsibilities explicit rather than relying on the service name alone.

Compare partial turnkey material responsibilities

What should your turnkey quote include?

A useful quotation identifies the approved board and BOM revision, quantities, purchasing responsibilities and manufacturing scope. It also states the costs, schedule assumptions and remaining questions.

• PCB fabrication: materials, stack-up, dimensions, finish and fabrication requirements.
• Component procurement: exact manufacturer part numbers, supplied parts and approved alternatives.
• Assembly: SMT, through-hole or mixed technology, placement sides, orientation and variants.
• Preparation: stencil, programming, tooling, fixtures or handling requirements as applicable.
• Checks and tests: inspection, programming, functional testing, acceptance criteria and reports.
• Delivery: required date, destination, packaging and agreed shipping responsibilities.

Programming, enclosure assembly, coating or qualification work should be requested explicitly when needed. Confirm whether it is included and what information or preparation it requires.

Files to send for a one-stop PCBA build.

Keep every file on the same revision. Identify missing information clearly so the team can ask the right questions before a final quote.

• Gerber and drill files, fabrication notes and outline
• Stack-up, material, thickness, copper and surface-finish requirements
• BOM with manufacturer part numbers, reference designators and quantities per board
• Do-not-fit positions, supplied materials and approved alternatives
• Placement data and assembly drawings with orientation and variant information
• Build quantity, expected next batch, target date and destination
• Programming instructions, test procedures and acceptance criteria where required

Prepare a usable PCB assembly BOM · Use the detailed full turnkey quote checklist

How the project moves from request to build.

Prepare a prototype-to-production release · Review the factory and quality workflow

Benefits to consider—and responsibilities to keep clear.

A coordinated supplier can reduce the number of purchasing and manufacturing handoffs. That is useful when you want fabrication, sourcing and assembly reviewed together. You still need an approved design, sourcing rules and clear acceptance criteria.

Compare the complete quoted scope rather than assuming turnkey is always the cheapest option. Include boards, components, assembly, setup, programming, fixtures, testing and delivery where applicable. Identify one-time costs separately from repeat build costs.

Specify how proposed component substitutions are reviewed and approved. Ask for the procurement documentation your project requires. Avoid treating a broad quality slogan as a substitute for the agreed sourcing and inspection process.

Read the PCB assembly cost breakdown · Read customer-reported project experience

Need a specific delivery date?

State whether your deadline means production complete, ready to ship or delivered to your location. Board complexity, material readiness, component availability, preparation and testing affect the available schedule.

For a deadline-sensitive build, include the required date and destination with the files. Confirm manufacturing and shipping assumptions separately in the quote.

Prepare a quick turn PCB assembly request

Turnkey PCB assembly FAQs.

Does turnkey automatically include PCB design?

No. The approved quote defines the scope. Provide the design files for manufacturing, or state the design assistance you need so its availability and responsibilities can be reviewed separately.

Can I provide some components?

Yes. Describe a partial turnkey request and list the supplied part numbers, quantities, packaging and expected arrival dates. Define the remaining procurement and assembly scope.

Can I request a quote before every file is complete?

Start with the application, quantity, services and target date. A final manufacturing quote may require complete board, BOM and assembly data.

Are component replacements allowed automatically?

Specify approved alternatives and parts that must not change. Proposed replacements need a design review and your approval before purchasing.

Is functional testing always included?

Include your test procedure, firmware, fixture requirements and pass/fail criteria. Confirm preparation, coverage and reporting in the quotation.