Multilayer PCB layout
Four to twenty-plus layer boards with planned stack-ups, controlled impedance and design rules.
Discuss thisDesign & SimulationPCB design and simulation
PCB design and simulation
where the layout proves the schematic.
Layout is where a correct schematic becomes a working board. We plan stack-ups, placement, routing and power distribution, and simulate signal and power behaviour before fabrication so problems are found on screen rather than on a bring-up bench.
- Multilayer & controlled impedance
- Signal & power integrity
- DFM reviewed
Why layouts failA schematic cannot debug
A schematic cannot debug
its own layout.
Most layout problems are structural rather than electrical: return paths crossing a split plane, a stack-up that cannot meet its impedance target, a power net too thin for its transient current, or a design the fabricator cannot build consistently.
We plan the stack-up and return paths early, simulate the interfaces that are sensitive to them, and run a manufacturability review before files are released. That is far cheaper than a respin.
Layout is a design decision, not a drawing task. Placement strategy, stack-up and return-path planning are agreed with the schematic, not after it.
- 01Stack-up planned up front
Layer count, dielectric, copper weight and impedance targets chosen around the interfaces, cost and build capability.
- 02Return paths planned
Continuous reference planes and sensible crossings so integrity problems are designed out rather than tuned later.
- 03Simulation before fabrication
Signal and power integrity checks on the nets that matter, with margin reported rather than assumed.
- 04Built for the fabricator
DFM review, clearances, drill tables, stack-up notes and assembly data released as one complete package.
- Stack-up decided firstLayers and dielectrics are chosen around impedance, thermal and cost targets, not inherited by default.
- Return paths reviewedCrossings and plane splits are planned deliberately, so high-speed nets keep a continuous reference.
- Margin reportedSimulation output is expressed as headroom, so it is clear whether a design is comfortable or marginal.
- Complete release dataGerber, drill, stack-up, notes, pick-and-place and assembly drawings ship as one consistent set.
What we deliver
PCB design and simulation services
Layout services run from the first stack-up decision through to a released, fabrication-ready data package.
Signal integrity analysis
Return path, crosstalk, reflection, terminations and stack-up driven pre-layout analysis.
Discuss thisPower integrity design
Plane and polygon planning, decoupling strategy, transient current paths and rail targeting.
Discuss thisHigh-speed design
Length matching, differential pairs, constraints, keepouts and topology for fast interfaces.
Discuss thisDFM & DFA review
Design-for-manufacture and assembly checks carried out from a fabricator’s perspective.
Discuss thisGerber, drill & release
Fabrication outputs, stack-up drawing, drill files, pick-and-place and assembly drawings.
Discuss thisWhat is included in scope
Scope is agreed in writing before work starts, so deliverables and responsibilities are clear.
- Stack-up and constraintsLayer count, impedance targets, mechanical outline, constraints and fabricator capability agreed.
- PlacementFunctional partitioning, power and thermal planning, and mechanical alignment of connectors.
- Routing and simulationRouting, plane shaping and SI/PI checks, with findings fed back into placement and stack-up.
- Thermal and mechanical reviewCopper balancing, hot-spot planning, via strategy and keepout compliance checked.
- DFM and DFAClearance, annular ring, silkscreen, polarity and assembly-accessibility checks before release.
- Fabrication packageGerber, drill, stack-up drawing, fabrication notes, BOM and assembly data released together.
Capabilities
Layout expertise in practice
The same discipline applies to a four-layer control board and a dense high-speed compute module.
Stack-up & impedance
Layer stack definition, dielectric choices, controlled impedance and fabricator capability checks.
Placement strategy
Functional partitioning, thermal paths, mechanical constraints and connector positioning.
Power distribution
Plane shaping, star and tree topologies, decoupling and transient current handling.
High-speed routing
Differential pairs, length tuning, serial interfaces and constraint-driven routing.
Analog layout
Grounding, guarding, separation of noisy and sensitive nets, and thermal drift control.
RF-aware layout
Impedance, matching networks, antenna keepouts and RF front-end placement.
Thermal-aware layout
Heat spreading, hot-spot planning, copper balancing and thermal via strategy.
Design for assembly
Test points, polarity and silkscreen clarity, panelisation and pick-and-place readiness.
Layout quality depends on its inputs. Review the circuit design and simulation first, and see manufacturing support for production sourcing and assembly.
Our process
How a layout is produced
Stack-up first, then placement, then routing — with a review point at each stage.
Stack-up & constraints
Layer count, impedance targets, mechanical outline, constraints and fabricator capability agreed.
Stack-up definitionPlacement
Functional partitioning, power and thermal planning, and mechanical alignment of connectors.
Placement reviewRouting & simulation
Routing, plane shaping and SI/PI checks, with findings fed back into placement and stack-up.
Simulation resultsRelease & DFM
Final review, DFM checks, and Gerber, drill, stack-up and assembly data released together.
Fabrication package
Technologies
Design capabilities
Tool choice follows the board: dense digital, high-speed, RF, power or mixed-signal.
- Layout & constraintMulti-layer layout, rule-driven routing, differential pairs and length matching
- SI / PI simulationSignal and power integrity modelling with margin reporting
- Stack-up engineeringDielectric and copper weight selection against impedance and cost
- DFM & DFAFabrication and assembly rule checks, panel and assembly data
- Mechanical interface3D outline, connector placement, keepouts and mating-clearance review
- Test engineeringTest point strategy, ICT and flying-probe readiness, boundary scan
A layout is only as good as its inputs. Component sourcing and approved alternates are planned during layout, not discovered after the first build fails.
Industries
Built for your industry’s environment.
Temperature, vibration, electrical transients and certification needs differ by sector, and they are captured during discovery rather than after the first build.
Industrial
Control panels, motor drives, gateways and automation hardware for continuous operation.
IndustrialAutomotive
In-cabin electronics, LED drivers and control units designed around automotive electrical and thermal expectations.
AutomotiveEnergy & power
Monitoring, metering, conversion and control electronics for energy and power systems.
Energy & powerRailways
Onboard and signalling electronics built for vibration, temperature cycling and long maintenance cycles.
RailwaysHealthcare
Diagnostic and monitoring devices designed with patient safety and compliance in mind.
HealthcareDefence
Rugged, secure and mission-critical systems with controlled supply and documentation.
DefenceCapability examplesSee the engineering problem.
See the engineering problem.
Imagine the possibilities.
The scenarios below illustrate the kind of work we do — they are not published client case studies or measured results. Ask us about relevant experience for your product.
Illustrative · Industrial gateway
A dense mixed-signal gateway board
Challenge: Radio, power supply and precision analogue shared one eight-layer board.
Approach: Careful partitioning, split power planes and a stack-up agreed with the fabricator before routing.
Explore connectivityIllustrative · Motor control
A high-current driver beside a control MCU
Challenge: Large transient currents sat next to a sensitive control section.
Approach: Copper pour planning, thermal via arrays and creepage review at the working voltage.
Explore high power motor driversIllustrative · Condition monitoring
A sensor board for a production line
Challenge: A long cable run from a remote sensor brought in noise and surge risk.
Approach: Protected inputs, filtering, and a layout that respects the signal path return.
Explore IoT & sensorsFrequently asked questionsGood questions.
Good questions.
Clear starting points.
What buyers usually want to know before scoping this kind of work.
Ask about your requirements →What PCB design services do you provide?
Multilayer layout, stack-up and impedance planning, signal and power integrity simulation, high-speed routing, thermal-aware placement, DFM and DFA review, and complete fabrication and assembly data release.
Do you support high-speed and controlled-impedance designs?
Yes. Stack-ups, terminations, length matching, constraints and pre-layout return-path analysis are part of the workflow for fast interfaces.
How many layers can you handle?
From four-layer control boards to dense multilayer compute and RF modules. The stack-up is chosen around the interfaces, the mechanical envelope and the fabricator’s capability.
Do you review layouts you did not design?
Yes. We review existing layouts for return paths, plane integrity, thermal issues, manufacturability and assembly readiness, and prioritise the findings by impact.
What do you release for manufacturing?
Gerber files, drill data, stack-up drawing, fabrication notes, pick-and-place data, assembly drawings and a bill of materials, released as one consistent package.
Can you work from our existing schematic?
Yes. We can start from your schematic and library, apply our design rules, and flag electrical concerns we find while planning the layout.
Related services
Design & Simulation
Explore the rest of the programme, or get in touch about this service directly.
Start your projectLet’s put the layout
Let’s put the layout
on solid ground.
Have a board that will not behave, or one about to go to fabrication? Tell us about the interfaces, the stack-up you have in mind and where the design stands today.
No complete specification needed. A short brief of your product and goals is enough to start.
What happens next?
- Share your product goal, application and current stage.
- Discuss the components, interfaces and constraints that matter.
- Agree a practical next step and the scope for a proposal.