Not Suspect
Flux Residue Caution
Visible residue on a tin-plated lug surface that should not automatically be treated as a meaningful failure mechanism.
Interpretation
Why this image matters
The report concluded that the contamination under the insulation was consistent with flux residue and may not represent a significant reliability concern if the flux was no-clean.
The residue is real and visible, but the correct interpretation is more restrained than many users might expect.
This kind of image emphasizes judgment, not just mechanism vocabulary.
flux-residue
interpretation-training
incidental-residue
contamination
Use this when
Best comparison value
- Teaching that visible residue is not automatically a root cause
- Comparing meaningful contamination to low-significance residue
- Discussing the importance of process context before making conclusions
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