In brief

A useful specification for solder joint inspection describes your operating range, line connections and required results while leaving room for the supplier to propose the best method.

Use this checklist for in-line inspection using visible solder-joint inspection and separate confirmed facts, realistic ranges and items that need a trial.

On the production floor

Describe what the complete process needs to achieve — Solder Joint Inspection

Plan solder joint inspection around representative good, bad and marginal samples, line presentation, lighting, reject handling and challenge criteria. Discuss an optical feasibility trial with Oxford Vision Systems. A clear brief should state the operating range for visible defect or measurement definition for visible solder-joint inspection and your requirements for false-accept, false-reject and challenge criteria.

Discuss your application
Your checklist

Application, operation and results

Product, part or pack

Operation and interfaces

Results and support

Write measurable requirements

For Solder Joint Inspection, turn each checklist item into a range and a test

Requirement

State what the complete solution must achieve for in-line inspection using visible solder-joint inspection, including your production pattern and who will review the result.

Range

Record normal and credible extremes for visible defect or measurement definition for visible solder-joint inspection, good, bad and marginal sample range and part presentation and production speed; avoid relying on one nominal value.

Check

Define representative examples from in-line inspection using visible solder-joint inspection, the method, repetitions, acceptable range and result record so you and the supplier share the same expectation.

For solder joint inspection, use “shall” only for a requirement that can be demonstrated. Keep preferences, assumptions, provisional line connections and future options clearly separate.

Connected responsibilities

Be clear about what sits around your solder joint inspection

Your final solder joint inspection scope must also account for recipe, reject and line-control interfaces, false-accept, false-reject and challenge criteria, current regulations and the conditions at your site.