Short answer: a PCBA quote is a stack of five cost blocks — PCB fabrication, components, assembly labor, one-time engineering (NRE) charges, and testing + shipping. There is no single market price: for the same board, the component block alone can swing the total by 2–3× depending on sourcing channel and quantity.
The practical takeaway: treat setup costs as fixed (stencil, programming, first-article inspection) and volume costs as variable. The fastest way to compare suppliers is an itemized quote — send your Gerbers and BOM and get one within 24 working hours.
What does a turnkey PCBA quote actually include?
When an assembler quotes "turnkey" PCB assembly, the number on the invoice is the sum of five very different cost blocks. Understanding the stack is the first step to knowing whether a quote is fair — or where it can be trimmed.
| Cost block | What it covers | How it scales |
|---|---|---|
| PCB fabrication | Bare board manufacturing: layers, material (FR-4, high-Tg, aluminum), surface finish (HASL, ENIG), thickness, minimum trace width. | Mostly fixed per panel; per-board cost drops sharply with quantity. |
| Components | All parts procured on your behalf: ICs, passives, connectors. Often the largest block — frequently 50–70% of the total on mainstream boards. | Driven by market prices and order quantity; volatile for ICs. |
| Assembly labor | SMT placement, reflow, DIP insertion, hand soldering, rework. | Setup fee per run + per-unit cost that scales with board size and part count. |
| Engineering / NRE | One-time charges: stencil production, DFM review, program loading, first-article inspection (FAI). | Fixed per run — the same whether you build 5 or 5,000 boards. |
| Test + shipping | AOI/SPI inspection (usually included), functional test if requested, international freight and customs. | Test scales with unit count; shipping scales with weight and speed. |
Why this matters: if a quote is not itemized, you cannot tell whether a supplier is making margin on components, hiding cost in a flat "assembly fee", or inflating NRE. A trustworthy assembler shows the stack. Our turnkey PCBA service quotes each block separately by default.
What drives PCBA cost the most?
Ranked by typical impact on a mainstream industrial or IoT board:
- Component selection. An IC quoted from a franchised distributor versus a spot-market source can differ by multiples. Shortages amplify this. A good assembler reviews the BOM up front and proposes drop-in replacements when a part is short — production only starts after you confirm.
- Board complexity. Layer count, minimum trace width, and the mix of fine-pitch packages. BGA and 0201 placement need tighter process control than a board full of 0602 passives.
- Order quantity. The single biggest lever after components, because fixed NRE is spread across fewer or more units.
- Lead time. Express runs displace scheduled production, so they carry a premium. Standard planning wins on price.
- Testing requirements. Functional test fixtures are custom engineering; AOI and SPI are effectively free because they run inline anyway.
Why does a 10-piece prototype cost more per board than 1,000?
Because assembly setup is charged per run, not per board. Before the first unit is built, the factory must: cut a stainless-steel solder-paste stencil for your footprint, load component programs into the placement lines, run a first-article inspection, and tune the reflow profile. That work costs roughly the same whether the batch is 5 boards or 500.
Spreading a fixed setup over fewer units raises the per-board number. This is also why honest suppliers don't promise "cheap prototypes" and "cheap volume" simultaneously — the prototype exists to validate your design at a fair setup cost, and the per-board price falls as volume absorbs the fixed cost.
At FWS the prototype MOQ is 1–10 pcs with no hard MOQ, so hardware teams can validate a design before committing to volume.
Turnkey vs consigned: which one is actually cheaper?
| Consigned | Turnkey | |
|---|---|---|
| You provide | PCBs + components | Gerbers + BOM only |
| Quote looks like | Lower — you've pre-paid parts | Higher — parts included |
| Hidden costs you carry | Sourcing time, freight to the factory, buffer stock for yield loss, shortage risk, incoming-quality risk | None — assembler carries them |
| Cheapest when | You already hold parts at good prices and volumes are small | You value speed, one PO, one responsible party, and predictable total cost |
The quoted price of consigned is almost always lower; the total cost of ownership is often not. When you count sourcing hours, inbound shipping, buffer stock and the engineering time lost to a shortage, turnkey usually wins for teams without a dedicated purchasing function. See our full comparison in the FAQ.
7 ways to reduce PCBA cost without hurting quality
- Allow panelization. Fitting multiple boards per panel cuts both fabrication and handling cost. Tell your assembler the board can be paneled and let them propose the breakout.
- Pass DFM before production. Every rework loop after SMT costs multiples of what fixing the layout would have. Submit Gerbers for a free DFM review early.
- Pre-approve substitutions. Give the assembler a list of acceptable drop-ins for long-lead or volatile parts. This alone can prevent a 2–4 week delay that costs more than the parts.
- Right-size the inspection level. SPI + AOI are standard. X-RAY is needed for BGA; it's overkill for a simple single-sided board. Match inspection to risk, not habit.
- Consolidate runs. Two small batches pay two setup fees. If the design won't change, build once.
- Use standard lead times. Express is a tool for real emergencies, not a default. Plan review + production + shipping into your schedule.
- Quote turnkey and consigned side by side. Prices move with the component market — the cheapest mode changes over time.
How we quote: itemized, DFM-checked, in 24 working hours
Send your Gerber production files, BOM (with quantity per part), position map and coordinate file. Our engineers run a DFM review first — if we spot a layout or BOM issue that would raise cost or risk, you hear it before you commit. You then receive an itemized quote covering every block in the table above, valid and reproducible.
Ready to see the stack on your board? Get a free quote or write to yym28@126.com.
Key takeaways
- PCBA cost = PCB fab + components + assembly labor + NRE + test/shipping — always ask for the itemized stack.
- Components are usually the biggest and most volatile block, often 50–70% on mainstream boards.
- Prototype per-board prices are higher because setup (stencil, programming, FAI) is fixed per run.
- Consigned quotes look cheaper; turnkey often wins on total cost of ownership.
- Panelization, DFM review and pre-approved substitutions are the fastest cost levers.