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On this page (15 sections)
- Surface-mount technology (SMT) assembly
- Through-hole (THT) and mixed assembly
- Inspection, rework and protection
- Prototype and production PCB assembly
- Turnkey vs consigned PCB assembly
- Solder paste, stencils and reflow profiles
- Moisture-sensitive components
- Packaging assembled boards
- Quality checks on every batch
- Industries we serve
- Combining assembly with design and test
- Getting started
- Through-hole soldering quality
- Rework and repair
- Programming and labelling
Surface-mount technology (SMT) assembly
SMT assembly places components directly onto pads on the board surface. Our process covers stencil printing of solder paste, automated component placement, reflow soldering with controlled thermal profiles and post-reflow inspection.
We handle chip passives, SOIC, QFN, QFP, BGA and fine-pitch packages on single and double-sided boards.
Through-hole (THT) and mixed assembly
Connectors, transformers, large capacitors and power components often need through-hole mounting for mechanical strength. Our technicians assemble and solder through-hole components to IPC workmanship practices, and combine SMT and THT processes on mixed-technology boards.
Mixed-technology boards are sequenced so that surface-mount parts are placed and reflowed first, then through-hole components are fitted and soldered. This order protects sensitive parts and keeps the process efficient.
Inspection, rework and protection
Every board is inspected for solder quality, component presence, polarity and alignment. Defects are reworked by trained technicians and re-inspected. For boards used in humid, dusty or high-vibration environments, conformal coating protects circuits from moisture and contamination.
Inspection results are recorded so that recurring issues can be traced to their cause, whether a footprint, stencil aperture or process setting. Correcting the cause prevents the same defect from appearing in future batches.
Prototype and production PCB assembly
Prototype PCB assembly gives you working boards quickly to validate a design. Production assembly focuses on repeatability, yield and cost. We support both with the same process controls, so moving from prototype to production does not introduce new variables.
Prototype builds also give our engineers early insight into assembly challenges, which we share as feedback. Fixing these before production improves yield and reduces cost per board.
Turnkey vs consigned PCB assembly
In turnkey assembly we purchase the bare PCB and all components. This saves your team time and lets us manage availability and quality of parts. In consigned assembly you supply components, which can suit customers who already hold stock or have preferred suppliers.
Partial turnkey combines both: you supply critical or special parts and we buy the rest. We will advise which option gives the best balance of cost and lead time for your project.
Solder paste, stencils and reflow profiles
Good SMT assembly starts with accurate solder paste deposition. Stencils are made to suit your board, with aperture adjustments for fine-pitch and thermal pads. Reflow profiles are set for the paste, board thickness and component mix so that joints form reliably without overheating sensitive parts.
Profiles are verified on the first boards of each batch and adjusted if needed. Consistent paste and profile control is one of the most important factors in reliable solder joints.
Moisture-sensitive components
Some ICs absorb moisture and can crack during reflow if not handled correctly. We follow handling practices for moisture-sensitive devices, including dry storage and baking where required.
Opened reels and trays are tracked for exposure time and resealed with desiccant when not in use. These controls prevent hidden damage that may not show up until a product fails in the field.
Packaging assembled boards
Assembled boards are packed in anti-static bags or trays with protective packaging suited to transport. Boards can be labelled with serial numbers, batch codes or your part numbers.
Packaging can be adapted to your receiving process, for example boards packed in quantities that match your kitting or labelled with your internal part numbers.
Quality checks on every batch
First boards of each batch are inspected in detail before the rest of the run continues. Defects found are corrected in the process immediately, not only reworked at the end.
This first-piece approach catches setup errors before they affect a whole batch. It saves rework time and ensures every board in the run meets the same standard.
Industries we serve
Industrial, medical, automotive, defence, consumer and IoT customers rely on our PCB assembly service.
Each industry places different emphasis on cost, reliability and documentation. We adapt inspection, testing and records to suit the application while keeping the same core process.
Combining assembly with design and test
Because we also design and test boards, issues found during assembly are fed back to designers and test fixtures are prepared alongside the build.
This closed loop between design, assembly and test means fewer surprises and faster resolution when something is not right. You deal with one team that understands the full picture.
Getting started
Send Gerbers, BOM, centroid file and quantities for a quotation.
If you are unsure what files to send, share what you have and our team will tell you what else is needed. We can also generate missing outputs such as centroid files from native design data.
Through-hole soldering quality
Through-hole joints must fully wet the barrel and pad. Our technicians are trained on correct technique, temperature and inspection criteria for reliable through-hole joints.
Joints are inspected for fillet shape, wetting and absence of bridges or voids. Boards with heavy copper or large components receive extra attention to ensure adequate heating.
Rework and repair
When a defect is found, trained technicians remove and replace components using controlled heat to avoid damaging boards. Reworked boards are re-inspected and retested.
Rework is recorded against the board so that its history is known. Limiting rework cycles protects board integrity and long-term reliability.
Programming and labelling
Boards can be programmed with firmware, serialised and labelled during assembly, saving a separate process step.
Programming during assembly ensures every board leaves with the correct firmware revision. Labels can include barcodes for scanning into your own systems.
