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On this page (15 sections)
- Functional testing and test jigs
- Inspection and in-circuit test
- Burn-in and stress testing
- Traceability and records
- Designing an effective test strategy
- Test fixtures and software
- Handling failures
- Field returns
- Testing for different industries
- Test as a standalone service
- Improving yield
- Getting started
- Boundary between inspection and testing
- Sampling vs 100% testing
- Test records for customers
Functional testing and test jigs
We design and build functional test fixtures that power each board, exercise its inputs and outputs and confirm it behaves as specified. Test procedures are written with you and recorded per unit.
Fixtures are designed for fast, repeatable testing so that every unit receives the same checks without slowing production.
Inspection and in-circuit test
Visual and optical inspection catch assembly defects. In-circuit testing checks component values and connections where test access allows, catching faults before functional testing.
Combining inspection with in-circuit testing catches most assembly defects before boards reach functional test.
Burn-in and stress testing
For high-reliability products, burn-in and environmental stress screening reveal early-life failures before units reach the field.
Burn-in conditions are set according to the product and its expected environment.
Traceability and records
Each batch carries records of materials, process steps, inspection and test results. These records support audits and make any field issue traceable to its cause.
Records are retained and can be shared with you on request or with each shipment.
Designing an effective test strategy
The best test strategy catches likely defects at the lowest cost. Optical inspection finds solder and placement problems. In-circuit testing confirms component values and connections. Functional testing confirms the board works as a system. Burn-in reveals early-life failures. We help choose the right combination for your product, volume and risk.
The strategy is reviewed as production volumes grow and failure data accumulates.
Test fixtures and software
Functional test fixtures hold the board, connect to test points through spring-loaded pins and apply power and signals. Test software runs a sequence of checks, compares results against limits and records pass or fail with measured values. Operators get clear instructions, and results are stored against serial numbers.
Fixtures and software are maintained and updated as the product changes.
Handling failures
Failed units are analysed to find the root cause, repaired and retested. Failure data is reviewed regularly so that recurring issues are corrected in the process or design.
Failure trends are shared with you, along with actions taken to improve quality.
Field returns
If units fail in the field, returned units can be analysed and the findings compared with production records to determine the cause and corrective action.
Findings are documented in a report that includes root cause and corrective actions.
Testing for different industries
Medical and defence products often require full functional testing with recorded values. Consumer products may combine sample-based and full testing depending on risk and volume. Industrial products typically receive full functional checks before dispatch.
We agree the level of testing with you based on your industry and customer requirements.
Test as a standalone service
If you assemble boards elsewhere, we can still design test fixtures and carry out testing as a standalone service.
This allows you to add structured testing without changing your current assembly supplier.
Improving yield
Test data reveals where defects occur. We analyse failures to find root causes and improve design or process, increasing first-pass yield.
Higher first-pass yield reduces cost and speeds up delivery.
Getting started
Share your product documentation and test requirements. We will propose a test strategy and fixture design.
We can start with a simple test and expand coverage as the product matures.
Boundary between inspection and testing
Inspection checks how a board looks; testing checks how it works. Both are needed. Inspection catches defects that may pass a functional test but cause failures later, such as marginal solder joints.
Using both methods together provides the highest confidence in product quality.
Sampling vs 100% testing
For some products, sampling is acceptable; for others every unit must be tested. We help define the right level based on risk and customer requirements.
The chosen approach is documented and applied consistently to every batch.
Test records for customers
Test records can be shared with each shipment or kept available on request.
Records can include measured values, pass/fail results and operator details for full traceability.
