TUW-2708 Electronic Coating

    TUW-2708
    An 8% solids fluoropolymer coating with a fluorescent dye that lights up under blue or UV light so AOI and visual inspection can confirm coverage; 0.4–5 μm films. Alternative to 3M Novec 2708.
    minimum order: 
    1 kilogram
    Country of Origin: 
    CHINA
    Quantity:
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    [Overview]


    TUW-2708 Electronic Coating is an 8% solids fluoropolymer coating carrying an orange-yellow dye group that fluoresces under blue or UV light. The dye is not cosmetic: an AOI camera or a UV torch shows at a glance where the coating landed, where it was missed and where it went on too heavy.
    On a volume line, TUW-2708 Electronic Coating usually pays the dye back — rework and customer complaints from missed coverage cost far more than the additive. Films run 0.4–5.0 μm, thicker than the 2% grades and therefore better protection; where the finished part cannot tolerate a fluorescent tint, use the sister grade 2704 instead.
     

    [Key Properties]


    - Appearance: Transparent, pale yellow to orange (dyed)
    - Solids content: 8% fluoropolymer
    - Carrier solvent: Hydrofluoroether (HFE)
    - Density (25 °C): 1.52 g/mL
    - Flash point: None
    - Film thickness (reference): 0.4–5.0 μm
    - Inspection: Fluoresces under blue or UV light
    - Cure: Air-dry at room temperature, no bake
     

    [Typical Applications]


    1. PCB moisture and corrosion protection — Coverage-critical boards, connectors and modules in humid, salty or corrosive service.
    2. AOI-verified coating lines — Where automated optical inspection or UV hand-checks must confirm full coverage.
    3. Anti-migration barriers — Grease and oil creep control on displays, spindles and lubricated assemblies.
    4. Hydrophobic and oleophobic surfaces — Water, hydrocarbon, silicone and photoresist repellency.
     

    [Handling & Compatibility]


    The dye is distributed through the film, but heavy coats look darker — agree the colour window with the customer for appearance parts. Inspect under low ambient light for the strongest fluorescence.
    Apply at 16–27 °C and below 60% RH; keep solution below 150 °C and dry film below 250 °C. Rework in acetone-type solvent. The dye does not block solder penetration, but wipe locally before repair to confirm.
    Set an inspection standard: under dark ambient light, a 365 nm UV torch at 30 cm should show even orange-yellow fluorescence with no dark patches or bright runs. Put that in the SIP so results do not depend on who is inspecting, and keep a first-article photo as the reference for TUW-2708 Electronic Coating.
     

    [Packaging & Availability]


    1 kg, 5 kg and 20 kg pails with 500 g samples. Stocked in South China and shipped with TDS, SDS and batch COA.