描述
3M Novec 2708 Electronic Grade Coating UV Detectable High Solids PCB Protection
Type: UV Detectable Fluoropolymer
Solids: 8.0 wt%
Coating Thickness: 0.4-5.0 µm
Viscosity: 4.9 cP
Packing: 5KG / 20KG drum
3M Novec 2708 Electronic Grade Coating is a high solids (8.0 wt%) UV detectable fluorinated polymer coating designed for maximum moisture and corrosion protection of printed circuit boards and electronic components. Diluted in 3M Novec 7200 Engineered Fluid with less than 5% PGMEA, this yellow-orange solution dries to a transparent coating with excellent hydrophobic and oleophobic properties. The coating contains a built-in fluorescent dye that glows under UV light, enabling easy visual inspection of coating coverage and quality control — eliminating the uncertainty of invisible conformal coatings.
Novec 2708 is the high solids counterpart to Novec 2704, offering double the solids content for maximum protective film thickness (0.4-5.0 microns). With higher viscosity (4.9 cP) for thicker coating deposition and dielectric breakdown strength of 2500 V/mil at 3.2 dielectric constant, Novec 2708 delivers robust protection for demanding electronics applications. It provides outstanding repellency against water, hydrocarbons, silicones, and photoresists with water contact angle of 105° and hexadecane angle of 65°. The coating adheres well to metals, glass, ceramics, polymers, and laminates, and withstands 175°C for 24 hours. Environmentally, it is nonflammable, non-ozone-depleting, low in toxicity, low GWP, RoHS compliant, and contains less than 5% VOCs. With a 2-year shelf life and easy application by spray, dip, brush, or selective dispensing, Novec 2708 is the ultimate choice for UV-detectable PCB protection requiring maximum coating thickness.
Genuine 3M Imported Stock and Technical Support
We supply stable spot inventory of genuine 3M Novec 2708 electronic grade coating. Official TDS, SDS, and batch COA documents are available for PCB protection, conformal coating, and UV detectable coating applications.
Request Novec 2708 Coating Quotation, TDS, SDS, and Sample
Complete SDS, COA, and technical documentation available
Core Advantages of 3M Novec 2708 Electronic Grade Coating
- High solids: 8.0 wt% — maximum protective film thickness (0.4-5.0 µm) in the UV detectable coating series
- UV detectable for easy inspection — yellow-orange dye fluoresces under UV light for coating verification and quality control
- High viscosity: 4.9 cP — optimized for thicker coating deposition and enhanced protection
- 7200 solvent with PGMEA — low VOC (<5%) solvent system for environmentally conscious manufacturing
- Excellent dielectric properties — dielectric constant 3.2, breakdown strength 2500 V/mil
- Hydrophobic and oleophobic — water contact angle 105°, repels liquids and contaminants
- No curing required — dries at room temperature in minutes, no post-application bake
- Solder-through repairable — components can be reworked without removing the coating
Main Applications
- PCB moisture and corrosion protection — for high-reliability electronics in harsh environments
- Conformal coating with inspection capability — UV detectable for easy quality assurance
- Maximum thickness protection — 8.0 wt% solids for demanding automotive, aerospace, and industrial applications
- Anti-migration coating — prevents migration of lubricants and photoresists in displays and spindle motors
- Protection against corrosive gases — for components exposed to aggressive environments
Full Technical Parameters
| Property | Typical Value | Test Method |
| Coating Type | Fluorinated polymer in HFE solvent + PGMEA | — |
| Solids Content | 8.0 wt% | — |
| Solvent System | 3M Novec 7200 + <5% PGMEA | — |
| Appearance (Solution) | Transparent, yellow-orange liquid | Visual |
| Coating Appearance | Transparent, light yellow to orange | Visual |
| UV Detection | Yes (fluoresces under UV light) | — |
| Density (23°C) | 1.4 g/ml | ASTM D891 |
| Viscosity | 4.9 cP | — |
| Boiling Point | 79°C | ASTM D1120-94 |
| Flash Point | None | Closed cup |
| Coating Thickness | 0.4-5.0 microns | — |
| Glass Transition Temperature | 53°C | DSC |
| Water Contact Angle (static) | 105° | Goniometer |
| Hexadecane Contact Angle | 65° | Goniometer |
| Refractive Index | 1.38 | — |
| Dielectric Constant (@1kHz, 30% RH) | 3.2 | ASTM D150 |
| Dissipation Factor (@1kHz, 30% RH) | 0.001 | ASTM D150 |
| Dielectric Breakdown Strength (30% RH) | 2500 V/mil | ASTM D149 |
| Thermal Conductivity | 0.1 W/m·K | — |
| CTE (TMA) | 88 μm/(m·°C) | TMA |
| Thermal Stability | Up to 175°C for 24 hours | MIL-B-81744A |
| Solder-Through Repairability | Yes | — |
| Removal Method | Novec 72DA (preferred) or 7200 | — |
| Flammability | UL 94 V-0 | UL 94 |
| VOC Status | Low VOC (<5%) | — |
| RoHS | Compliant | — |
| Shelf Life | 2 years | — |
Note: All listed figures are typical values and may vary by production batch. Complete independent qualification testing is required before mass production deployment.
Handling and Storage Recommendations
| Storage Conditions | Store at 16-27°C (60-80°F) and <60% R.H. in original unopened containers. |
| Shelf Life | 2 years from date of manufacture when stored as recommended. |
| Application Precautions | Keep water out of coating bath. Surfaces must be clean and dry before application. |
| Thermal Limits | Do not heat solution above 150°C; dry film should not exceed 225°C to avoid decomposition. |
| Removal | Use 3M Novec 72DA Engineered Fluid (preferred) or Novec 7200 Engineered Fluid. |
| Operation Protection | Use with adequate ventilation and appropriate PPE. Read SDS before use. |
Official Technical Documentation
| Document Type | Document Introduction | Document Request |
| TDS | 3M Novec 2708 original factory technical data sheet | Request TDS |
| SDS | Safety data sheet covering transport, storage, and handling guidelines | Request SDS |
| COA | Batch-specific certificate of analysis with solids and purity specifications | Request COA |
Frequently Asked Questions
What is 3M Novec 2708 Electronic Grade Coating?
3M Novec 2708 is a high solids (8 wt%) UV detectable fluorinated polymer coating for moisture and corrosion protection of PCBs and electronic components. It contains a yellow-orange dye that fluoresces under UV light for easy coating inspection and quality control.
What is the difference between Novec 2708 and Novec 2704?
Novec 2708 has double the solids content (8% vs 4%), higher viscosity (4.9 cP vs 1.75 cP), and thicker coating (0.4-5.0 µm vs 0.1-4.0 µm). Both offer UV fluorescent detection, but 2708 provides maximum film thickness for enhanced protection.
Is Novec 2708 coating detectable under UV light?
Yes. Novec 2708 contains a yellow-orange dye built into the polymer that fluoresces under UV light, making it easy to inspect coating coverage and ensure quality control during the coating process.
Is Novec 2708 coating environmentally friendly?
Yes. Novec 2708 is nonflammable, non-ozone-depleting, low in toxicity, low GWP, RoHS compliant, and contains less than 5% VOCs.
What is the shelf life of Novec 2708 coating?
Novec 2708 has a shelf life of 2 years from date of manufacture when stored in original unopened container at 16-27°C and <60% RH.
Can Novec 2708 coating be removed for rework?
Yes. Novec 2708 allows solder-through repairability and can be removed with 3M Novec 72DA Engineered Fluid (preferred) or Novec 7200 Engineered Fluid.
What is the dielectric strength of Novec 2708?
Novec 2708 offers dielectric breakdown strength of 2500 V/mil with a dielectric constant of 3.2 at 1kHz, providing reliable electrical insulation for PCB protection applications.
Related 3M Novec Products
Compare 3M Novec electronic grade coatings for different protection requirements.
| Product | Solids | Viscosity | Coating Thickness | UV Detection | Best For |
| Novec 2708 | 8.0 wt% | 4.9 cP | 0.4-5.0 µm | ✅ | Maximum UV detectable protection |
| Novec 2704 | 4.0 wt% | 1.75 cP | 0.1-4.0 µm | ✅ | UV detectable PCB protection |
| Novec 1908 | 8.0 wt% | 2.24 cP | 0.4-5.0 µm | ❌ | Maximum protection (no UV) |
Get 3M Novec 2708 Coating Bulk Pricing and Technical Support
We supply genuine 3M Novec 2708 electronic grade coating for UV detectable PCB protection, conformal coating, and high-reliability electronics applications. Contact us for bulk pricing, sample availability, technical documents, and application support.
Request Novec 2708 Coating Technical Details
Disclaimer: All technical data on this page are for general guidance only and are not product specifications. Buyers must carry out independent trials and verify suitability before bulk ordering. Actual values may vary between production lots.
