When you look for a quick turn PCB assembly manufacturer who can finish the whole project from bare PCB fabrication to assembly within 5 days, that's KnownPCB Assembly.
We strongly support our global cutomers and PCB project managers in quick turn PCB assembly for hardware prototype, NPI, pilot-run and low-volume PCBA projects with fixed delivery requirements for across-industry. Our experienced engineers always allow us to keep the review process efficient, and move the job into priority production.
Need assembled boards faster than a standard production schedule allows?
If something will slow the build down, we identify it before production starts.
- BOM availability: stock, shortages and approved alternatives
- PCB data: Gerber files, stack-up and fabrication requirements
- Assembly data: placement files, polarity and SMT/THT requirements
- Special processes: BGA inspection, programming, testing and coating where required
KnownPCB Quick Turn PCB Assembly at a Glance
Actual PCB fabrication-to-finished-PCBA shipment achieved on one expedited project.
Target engineering and BOM review time for a complete quick-turn project package.
Faster front-end review than a conventional sequential engineering workflow. Confirm before publication.
Mixed assembly, BGA inspection, programming and functional testing can be included.
Quick Turn PCB Assembly Engineering Review
We review BOM status, PCB data and assembly requirements at the same time so the order does not wait for one department after another.
| Review Item | What We Check | Quick-Turn Target |
|---|---|---|
| BOM Availability | Every BOM line is checked against build quantity, stock and approved sourcing options. | Within 2.5 hours |
| Gerber / PCB Data | Layer structure, materials, tolerances, surface finish and fabrication requirements. | A 12-layer, 3-step HDI PCB typically takes us about 20 Minutes to review. |
| Placement Data | Coordinates, rotation, polarity and component references before line setup. | Before SMT scheduling |
| SMT / THT Process | Stencil, reflow, through-hole soldering, selective soldering and special handling. | Reviewed before slot confirmation |
| BGA / QFN Inspection | Fine-pitch assembly and X-ray requirements. | X-ray capacity reserved in advance |
| Programming / Testing | Firmware, fixture, software, test method and acceptance criteria. | Prepared before production starts |
View the full expedited engineering review checklist
- Manufacturer part numbers and approved alternatives
- PCB stack-up and special materials
- Controlled-impedance requirements
- Fine-pitch BGA / QFN requirements
- THT and wave/selective soldering requirements
- Firmware programming
- Functional testing
- Conformal coating
- Cleaning and special handling
- Customer-specific inspection requirements
Priority Scheduling for Fast Turnaround PCB Assembly
Files and Materials Ready
When the files are complete, critical parts are available and the DFM issues are closed, we move the job into priority scheduling.
Production Slot Booked Early
SMT and THT capacity is reserved before the build reaches the line instead of waiting behind the normal assembly queue.
X-Ray, Programming and Testing
Required inspection and test operations are scheduled with the PCBA build rather than added after SMT is complete.
Quick Turn PCB Assembly Lead Times
The turnaround is confirmed from the actual build condition. Replace the reserved values below with KnownPCB production data before publication.
| Build Type | Target Turnaround | Required Conditions |
|---|---|---|
| Single / Double-Sided SMT Prototype | [1–2 Working Days] | PCB ready, complete BOM and placement data, components available |
| SMT + THT Assembly | [2–3 Working Days] | THT parts and soldering requirements confirmed |
| BGA / QFN Assembly | [2–3 Working Days] | Stencil, reflow and X-ray requirements confirmed |
| Turnkey PCB Assembly | [3–5 Working Days] | Critical component availability confirmed |
| Programming / Functional Test | [ +0.5–1 Working Days] | Firmware, fixture, software and acceptance criteria ready |
PCB Fabrication to Finished PCBA Shipment in Five Days
KnownPCB completed one time-critical project from PCB fabrication through finished PCBA shipment in five days.
Component Sourcing for Quick Turn PCB Assembly
For turnkey rush builds, we check critical component availability before confirming the shipment date.
Unavailable ICs, long-lead parts and approved alternatives are separated during BOM review so they can be resolved before the PCB reaches assembly.
- Full-turnkey sourcing
- Partial-turnkey sourcing
- Customer-consigned components
- Approved alternative components
- BOM quantity verification
- Incoming material inspection
Quick Turn PCB Assembly Manufacturing Capabilities
| Capability | KnownPCB Standard | Engineering Review Range |
|---|---|---|
| Minimum Component Package | 0201 | 01005 subject to review |
| QFP / QFN / SOP / SOJ Pitch | 0.4 mm | 0.3–<0.4 mm subject to review |
| CSP / BGA Pitch | 0.4 mm | 0.3–<0.4 mm subject to review |
| SMT PCB Size | Up to 650 × 400 mm |
Up to 1200 × 500 mm subject to review |
| SMT PCB Thickness | 0.5–3.0 mm | Outside standard range by review |
| DIP / Wave-Solder PCB Thickness | 0.4–5.0 mm | Outside standard range by review |
| Inspection | SPI / AOI / X-Ray | Project-specific inspection plan |
| Testing | Electrical / Functional Test | Fixture and program dependent |
Quick Turn Prototype PCB Assembly
Prototype builds often use our expedited schedule when assembled hardware is required for design verification, firmware testing or the next engineering revision.
PCB fabrication, sourcing, assembly and required inspection can be coordinated against the same prototype delivery date.
Prototype PCB Assembly Services →Quick Turn Low Volume PCB Assembly
Quick turn and low volume often appear in the same project, but they solve different purchasing requirements.
Quick turn is about lead time. Low volume is about production quantity.
A pilot run or small batch can use the expedited schedule when the PCB, components and manufacturing process are ready.
Low Volume PCB Assembly Services →Inspection and Testing for Quick Turn PCB Assembly
SPI
Solder paste inspection can be included before placement on qualified builds.
AOI
Placement, polarity and visible solder conditions are checked after assembly.
X-Ray
BGA and other concealed solder joints can be inspected by X-ray.
Programming
Firmware programming can be included when software and programming hardware are ready.
Electrical Test
Electrical verification can be added according to the project test plan.
Functional Test
Customer-defined functional testing can be integrated when fixtures and procedures are available.
Assembly workmanship standard: [ IPC-A-610 Class 2 / Class 3 scope].
Files Required for a Quick Turn PCB Assembly Quote
PCB Files
- Gerber or ODB++
- Fabrication drawing
- Stack-up, if applicable
- Controlled-impedance requirements
- Surface finish
Assembly Files
- Bill of Materials
- Manufacturer part numbers
- Pick-and-place file
- Assembly drawing
- DNI / DNP list
Schedule and Test Requirements
- Build quantity
- Required shipment date
- Programming files
- Test procedure
- Coating / special process requirements
Quick Turn PCB Assembly Manufacturer
KnownPCB can coordinate PCB fabrication and PCBA manufacturing under the same project schedule for time-critical builds.
SMT production lines
Placement capacity
PCB / PCBA manufacturing experience
On-time delivery rate, if tracked internally
Quick Turn PCB Assembly FAQ
How fast can KnownPCB assemble a PCB?
The current quick-turn target for qualified builds is [3~5 days]. PCB readiness, component availability, assembly complexity and testing determine the final schedule.
Can PCB fabrication and assembly both be expedited?
Yes. KnownPCB has completed one project from PCB fabrication through finished PCBA shipment in 5 days.
Can KnownPCB source components for a rush PCBA order?
Yes. We support turnkey, partial-turnkey and customer-consigned material. Critical component availability is checked before the delivery date is confirmed.
Can BGA X-ray inspection be included in a quick-turn build?
Yes. X-ray inspection can be scheduled with the assembly process for BGA and other hidden solder joints.
Is quick turn PCB assembly the same as low-volume PCB assembly?
No. Quick turn describes manufacturing lead time. Low volume describes production quantity.
Is fast turn PCB assembly only for prototypes?
No. Fast turnaround PCB assembly can be used for prototypes, NPI, pilot runs, low-volume production and other time-critical builds.
Request a Quick Turn PCB Assembly Quote
Send the PCB files, BOM, assembly data and required shipment date. We will check the build condition and confirm the available expedited schedule.
