From released files to assembled boards
Align your board files, BOM, sourcing model and acceptance requirements before assembly. Review open questions, the proposed process route and the evidence needed to release your build.
Start from the customer problem
Choose the risk closest to your situation. The page responds with what to send, what KeepBest checks and what you should expect back—before asking you to complete a form.
Recommended next step
Engineering starts by checking whether the files, stack-up, land patterns, panel approach and assembly assumptions can support a stable build.
No data is sent at this stage. The selected concern is only added to the local quote form.
Engineering starts by checking whether the files, stack-up, land patterns, panel approach and assembly assumptions can support a stable build.
What to send: Gerber, BOM, drawings and target quantity
Review output: Open questions, DFM/DFMA observations and a proposed production route
The sourcing review connects manufacturer part numbers, approved alternatives, availability and ownership before material release.
What to send: BOM with MPN, approved alternates and sourcing responsibility
Review output: Clarified sourcing model, BOM questions and material assumptions
Mixed SMT, THT, hand soldering, programming, coating or box-build steps are sequenced around the product—not forced into a generic package.
What to send: Assembly drawings, special-process notes and product requirements
Review output: Recommended process sequence, tooling needs and quality checkpoints
Inspection and test coverage is discussed against component risk, hidden joints, functional requirements and the agreed release criteria.
What to send: Test specification, critical functions and acceptance requirements
Review output: Proposed inspection coverage, test assumptions and release evidence
Choose the assembly route
Select the production route closest to your product. Engineering confirms the final process after reviewing the board, BOM, volume, test plan and acceptance requirements.
Automated solder paste printing, placement, reflow and optical inspection support prototypes through repeat production.
Automated solder paste printing, placement, reflow and optical inspection support prototypes through repeat production.
Manual or selective processes support connectors, transformers and components that require mechanical retention or cannot use SMT.
A controlled sequence connects surface mount and through-hole operations so both component types can be produced and inspected within one build plan.
Enclosures, wiring, mechanical parts, programming and functional checks can be connected to the assembled board for a more complete handoff.
Assembly capability
These values provide an initial planning reference. Actual feasibility, capacity and schedule are confirmed against the files and project requirements.
Send the Gerber, BOM and build requirements so engineering can confirm package, panel, process and inspection needs.
Use the full capability page for a deeper technical review.
Historical values reproduced from the original PCB Assembly webpage. The current manufacturing site, equipment, configuration and acceptable limits have not been verified for these values. Original board-range conflicts remain pending engineering confirmation. These are reference parameters, not order commitments.
| Capability topic | Original webpage historical value |
|---|---|
| Minimum order | 1 piece |
| Board types | Rigid, flexible and rigid-flex PCB |
| Assembly types | SMD, through-hole, BGA, micro-BGA, QFN and mixed technology |
| Board size | 50 × 50 mm to 610 × 510 mm |
| Quality reference | IPC-A-610 |
| Minimum package | 01005 (0.4 × 0.2 mm) |
| BGA capability | Minimum ball diameter 0.14 mm; minimum pitch 0.2 mm |
| Production capacity | Confirmed per program after engineering and material review |
The proposed facility, line, package and inspection plan must match the accepted order. Historical parameter conflicts remain pending current engineering confirmation.
Quality checkpoints
Select a checkpoint to see where quality feedback enters the process. The exact inspection and test plan is agreed for each build.
PCBs, components and production inputs are checked before they are released to the assembly line.
PCBs, components and production inputs are checked before they are released to the assembly line.
Paste volume, height, area and position can be checked before component placement continues.
AOI checks visible assembly conditions and feeds inspection results back into process control.
X-ray inspection supports review of hidden solder joints, including BGA and other bottom-terminated components.
Fixtures, programming and functional checks are defined around the product requirements and agreed acceptance criteria.
Company production photographs illustrate the work areas. Inspection and functional-test methods are defined separately in the approved project plan.
The KeepBest build path
Each gate answers a different customer question. Select a gate to see what is decided before the project moves forward.
Gerber, BOM, drawings, quantity and acceptance requirements are aligned so unanswered questions are visible before production planning.
Gerber, BOM, drawings, quantity and acceptance requirements are aligned so unanswered questions are visible before production planning.
PCB fabrication, component responsibility, approved alternates and incoming checks are connected before material release.
SMT, THT, mixed assembly, programming and special operations follow the agreed sequence with in-process feedback.
AOI, X-ray, functional checks and final release evidence are matched to the agreed product and acceptance requirements.
What the customer receives
A useful quotation makes the build assumptions visible. That helps engineering and purchasing compare scope, risk and responsibility before approval.
Project decision record
Use the following example to distinguish a finding, customer decision, quotation assumption and release status.
Files, quantities, responsibilities and unresolved questions are visible.
Turnkey, partial turnkey or consigned material ownership is clarified.
Assembly, inspection and testing requirements are connected.
Quotation and schedule assumptions match the reviewed project scope.
Example assembly review format · Example fields for discussion; the accepted order defines scope and records.
Swipe or scroll to compare columns
| Example review question | Customer decision | Quotation / release record |
|---|---|---|
| Connector orientation differs between drawing and placement data | Approve the intended RefDes orientation and matching file revision | Open question until response; price and route assume the approved release. |
| A critical IC is customer-supplied | Approve kit quantity, arrival and shortage ownership | List supplied BOM line and unresolved material status. |
| Functional coverage has no released procedure | Define development or supply a procedure and limits | Quote test scope separately; do not mark functional acceptance complete. |
This format illustrates questions and status fields. It is not a completed customer review. Agree the actual reply format and records with the project team.
Certifications
These displayed document copies are reference material. Request current validity, contracting entity, facility and relevant scope for your project; a document copy does not establish every order’s qualification.
IPC MembershipMembership document · current status to confirm
ISO 9001Quality management system
IATF 16949Historical displayed copy · current status to confirm
ISO 13485Medical device quality system
ISO 14001Environmental management system
UL E352816UL recognitionApplication support
Each market brings different documentation, traceability, inspection and testing expectations. Start from the application, then define the build plan.
PCB assembly FAQs
Quick answers retained for purchase and engineering teams, with deeper links where useful.
View all FAQsShare the required prototype or low-volume quantity. The minimum practical build, setup costs, material commitments and route are confirmed after review.
Turnkey service can connect PCB fabrication, component sourcing, assembly, programming, inspection, testing, packaging and delivery. The exact scope is confirmed in the quotation.
A coordinated supplier can reduce handoffs between fabrication, sourcing and assembly while keeping technical communication and issue ownership within one project team.
The appropriate PCB surface finish depends on the design, component mix, storage and assembly requirements. Share the files for engineering confirmation or review the PCB manufacturing service.
Start with the project files
Gerber, BOM and the choices from your project brief give engineering a better starting point for process, sourcing, inspection and quotation review.
Fill in your requirement information and upload Gerber and BOM files, we will give you a quote within 24 hours.
Fill in your requirement information and upload Gerber and BOM files, we will give you a quote within 24 hours.
