PCB before applying HumiSeal
Proper PCB preparation is the most critical step before applying HumiSeal conformal coating, produced by Chase Corporation. İçinde PCB Montajı, SMT Montajı, ve Anahtar Teslim PCB Montajı, poor preparation is the leading cause of coating failure such as delamination, bubbles, or corrosion.

Remove all contaminants
After soldering, PCBs often have residues that must be eliminated:
- Flux residues (especially no-clean flux)
- Oils from handling
- Dust and particles
- Ionic contamination
Cleaning methods:
- Solvent cleaning (IPA or dedicated cleaners)
- Ultrasonic cleaning for complex assemblies
- Deionized (DI) water cleaning systems
A clean surface ensures proper adhesion of Konformal Kaplama.
Dry the PCB completely
Moisture trapped on the board can cause serious issues:
- Poor coating adhesion
- Blistering or bubbles
- Kaplama altında korozyon
Best practices:
- Air dry or use compressed air
- Bake PCB at 50–80°C for 30–60 minutes if needed
- Ensure no moisture remains under components
Inspect before coating
Before coating, perform a visual and quality inspection:
- Check for solder defects (bridges, cold joints)
- Ensure no residues remain
- Verify components are properly mounted
Fixing issues after coating is much more difficult in SMT Montajı.
Mask critical areas
Certain areas must not be coated:
- Connectors and edge contacts
- Test points
- Switches and mechanical interfaces
Use masking tape, boots, or removable latex to protect these zones during PCB Montajı.
Surface activation (optional but recommended)
For high-reliability applications:
- Use plasma cleaning to improve surface energy
- Enhances coating adhesion
- Common in aerospace and automotive Anahtar Teslim PCB Montajı
Control handling and environment
- Wear gloves to avoid fingerprints
- Work in a clean, dust-free environment
- Maintain controlled humidity and temperature
Contamination during handling can compromise coating quality.
Final readiness checklist
Before applying HumiSeal:
- PCB is clean and contamination-free
- Fully dry with no trapped moisture
- Masking is correctly applied
- Inspection is completed
- Environment is controlled
Sonuç
Preparing the PCB properly is essential for successful HumiSeal coating. In PCB Montajı, SMT Montajı, ve Anahtar Teslim PCB Montajı, thorough cleaning, drying, inspection, and masking ensure strong adhesion, reliable protection, and long-term performance.
We support HumiSeal and equivalent conformal coating solutions for your PCBA projects.
Konformal Kaplama Teklifi Alın
PCB'niz için konformal kaplama hakkında sorularınız mı var? Mühendislerimiz yardıma hazır.
İhtiyaçlarınızı bize gönderin ve mühendislik ekibimizden hızlı bir yanıt alın.
✔ 24 saat yanıt ✔ Mühendislik desteği ✔ Küçük ve Seri Üretim
Shenzhen Tengxinjie Electronics Co, Ltd.


