Methods to test for no-clean residue
Combine visual, chemical, and electrical tests. Key methods:
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ionic contamination test (IPF or IPC-TM-650 methods)
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surface insulation resistance testing
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FTIR and GC-MS for residue chemistry
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dye and solvent solubility checks
ZESTRON labs provide these analytical services and process audits to define pass/fail criteria tailored to the application.
Testing techniques: IPC standards and beyond
IPC standards provide baseline tests, but semiconductor and aerospace customers require tighter controls. Use accelerated humidity bias tests, salt spray, and long-term reliability screening. Create a test matrix that matches field stressors and document acceptance criteria.