Principles for Selecting Cleaning Agents for Electronic Components and Precision Parts

🌟 Key Takeaways
• Cleaning directly affects quality and service life of electronic components
• Cleaning agents must leave no residue and must not damage materials
• Low surface tension and fast evaporation are critical for Final Rinse
• “Fit for purpose” is more important than cleaning strength

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Cleaning processes in the electronics, semiconductor, and precision parts industries directly impact product
quality, reliability, and long-term stability. Cleaning agents are not just for removing contaminants; they must leave
no residue, avoid material damage, and remain compatible with downstream processes.

Principles for Selecting Cleaning Agents
Selection should be based on physical and chemical properties rather than brand names. This is especially critical
for the Final Rinse stage, the last cleaning step before assembly or use. Improper selection may cause long-term
quality issues.

Key Properties of Suitable Cleaning Agents
■ Low Surface Tension
Allows penetration beneath SMD components, IC leads, and complex structures. Suitable for PCBs and micro
components.
■ Fast and Uniform Evaporation
Minimizes residue, reduces drying steps, and shortens process cycle time.
■ Material Compatibility
Must not corrode metals or cause swelling, cracking, or embrittlement of plastics, boards, or rubber seals.
■ Operational Safety
Non-flammable properties reduce EHS risks and support continuous factory operation.
■ Compatibility with Existing Equipment
Usable with existing vapor cleaning or immersion systems, avoiding additional modification costs.

Common Misconception
Many factories believe:
“Stronger cleaning power = better performance.”
In reality, overly aggressive agents may damage surfaces, leave invisible residues, and reduce long-term
component reliability. Precision applications require suitability, not aggressiveness.

📘 Summary
Cleaning is a core factor in electronic product quality. Proper selection of cleaning agents reduces risk, improves
process stability, and supports future technological advancement.

For deeper understanding, KANEKO CHEMICAL (THAILAND) CO., LTD., with expertise in industrial chemicals,
recommends reviewing the related Advance topics below.

❓ FAQ
Q1: Can general-purpose cleaners be used for electronic components?
A: Generally not recommended, as they may leave residue or damage sensitive materials.
Q2: Why are specialized agents required for Final Rinse?
A: As the final step before assembly or use, any residue directly affects product reliability.
Q3: Is equipment replacement required when changing cleaning agents?
A: If properties are similar, existing equipment can usually be used.

📚 Glossary (Key Terms)
• Final Rinse: Final cleaning step before assembly or use
• Low Surface Tension: Ability to penetrate very small gaps
• Residue: Remaining contaminants after cleaning
• Material Compatibility: Suitability with component materials

📖 Reference
HFE-7000 Series – Alternative Fluids for 3M Novec Series (Thailand Market)
KANEKO CHEMICAL (THAILAND) CO., LTD. (N/A)

🔒 Trust
This content has been reviewed by KANEKO CHEMICAL (THAILAND) CO., LTD.to ensure technical accuracy.

📆 Updated: 2025-12-30