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YY 240 F is a non-fluorine, high-performance conformal coating developed specifically for moisture proofing and insulation protection of electronic assemblies. It forms a thin, uniform protective film that effectively shields electronic circuits from water, humidity and environmental contaminants while maintaining excellent electrical insulation properties.
Unlike conventional fluorinated coatings, YY 240 F achieves outstanding water repellency, chemical resistance and thermal stability without using fluorine chemistry, making it a more environmentally considerate solution for modern electronics manufacturing.
The coating exhibits excellent liquid repellency even at low film thickness, ensuring reliable protection without altering component dimensions or performance.
YY 240 F is designed to prevent insulation degradation, corrosion and electromigration failures, which are common causes of short circuits in moisture-exposed electronic systems. It is suitable for a wide range of electronics operating under high humidity, condensation and temperature stress conditions.
Why Non-Fluorine Conformal Coatings Are Important
Traditional fluorinated coatings provide strong water repellency but increasingly face regulatory, environmental and sustainability concerns. YY 240 F addresses these challenges by delivering comparable or superior moisture-proof performance without fluorine, while offering excellent heat resistance, electrical reliability and long-term durability.
This makes YY 240 F especially suitable for electronics manufacturers seeking high reliability, compliance readiness and long service life.
Hybrid polysilazane–fluoropolymer based electronic protective coating offering moisture resistance, chemical durability and excellent electrical insulation.
~95%
0.95 – 0.99 g/cm³
Clear to slightly opalescent liquid
Thin, dense, hydrophobic protective layer. Regulatory & Identification Details
3208
Classified as dangerous goods under transport conditions
YY 240 F is ideal for protecting PCBs from humidity, condensation and water droplets, particularly in densely packed circuits where moisture ingress can cause insulation failure.
Used in control units, sensors and modules exposed to temperature fluctuations, moisture and harsh environments.
Provides durable moisture protection without affecting electrical performance, signal integrity or component reliability.
Suitable for applications where insulation resistance, thermal endurance and long-term reliability are critical.
YY 240 F can be applied by dipping, spraying or controlled coating methods. After application, solvent is allowed to evaporate at room temperature, followed by optional thermal drying to ensure complete curing and optimal performance.
| Parameter | YY 240 F (Non-Fluorine) | Silicone Conformal | Acrylic Conformal | Fluorinated Conformal |
|---|---|---|---|---|
| Chemistry positioning | Non-fluorine moisture-proof barrier | Flexible, high-temp polymer | General-purpose protective resin | Very low surface energy barrier |
| Primary strength | Moisture proofing + electromigration suppression | High temp + flexibility | Easy processing + rework | Max water/oil repellency |
| Water repellency | High; contact angle >100° | High | Medium–High | Very high |
| Electromigration resistance | >10× improvement vs available coating agent (lab test) | Good–Very good (grade dependent) | Moderate–Good | Very good (depends on film integrity) |
| Insulation resistance | >1 × 10¹⁴ Ω | Very high | High | Very high |
| Water absorption | <0.1% | Low | Medium | Very low |
| Thermal stability | Decomposition >300°C | Excellent (often among the best) | Moderate | Good–Excellent |
| Glass transition (Tg) | –50°C | Typically low (very flexible) | Higher (more brittle in cold) | Varies (often moderate) |
| Film nature | Thin protective film (moisture-proof) | Soft / elastic film | Harder film | Low-energy, repellent film |
| Dry to touch | 10–15 min (RT) | Medium | Fast | Medium |
| Chemical / base resistance | Resistant to strong bases | Generally good | Moderate | Good–Very good |
| Rework / repairability | Moderate (depends on removal method) | Moderate–Difficult | Easy (solvent rework) | Often difficult |
| Cost level | Low | Medium–High | Low | High |
| Environmental / regulatory optics | Non-fluorine | Generally acceptable | Generally acceptable | PFAS scrutiny possible |
The Reseller hereby declares and acknowledges that YY 240 F and SFCOAT MP Series are manufactured exclusively by AGC Seimi Chemical Co., Ltd., Japan, a member of the AGC Group, and that all associated product names, trademarks, trade names, logos, technical literature, and intellectual property rights remain the sole property of AGC Group.
The Reseller acts only as an reseller of genuine AGC-manufactured products and does not claim ownership, manufacturing rights, or trademark rights over YY 240 F, SFCOAT MP Series, or any other AGC-branded products.
| Property | Typical Value |
|---|---|
| Viscosity (25 °C) | ~220 mPa·s |
| Typical Film Thickness | ~13 µm (dip coating) |
| Dry Time (Touch) | 10 – 15 minutes (room temperature) |
| Water Contact Angle | >100° |
| Glass Transition Temperature | –50 °C |
| Decomposition Temperature | >300 °C |
| Insulation Resistance | >1 × 10¹⁴ Ω |
| Water Absorption | <0.1 % |