Fine-L-Kote UR Urethane Conformal Coating

Sku Number Name Size Units
Per Case
Price
Per Case
Case
Qty
 
2104-12S Fine-L-Kote UR - 12oz aerosol 12 oz (340g) 12 $399.96
2104-G Fine-L-Kote UR - 1 gal liquid 1 gal (3.8L) 1 $246.84
2104-5G Fine-L-Kote UR - 5 gal liquid 5 gal (19L) 1 $1,005.01
Packaging Order minimum case quantity only. Extra shipping fees may apply.
Urethane conformal coating is known for its excellent moisture and chemical resistance. They are also very abrasion resistant. Due to this and their solvent resistance, they are also very difficult to remove. Like silicone, full removal generally requires specialized solvents, long soak time, and agitation like from a brush or an ultrasonic bath. Urethane conformal coating is commonly specified for aerospace applications where exposure to fuel vapors is a common concern.
 

Features & Benefits

  • Thermal resistance - to 248°F (120°C)
  • Dielectric strength - 380 volts/mil
  • Moisture resistant
  • Chemically resistant
  • Abrasion resistant
  • UL94 V-0 – nonflammable final coat
  • Meets IPC-CC-830B & MIL-I-46058C
  • UV indicator for black light QC inspection

Applications

FAQ's

Is conformal coating conductive?

No, conformal coatings are non-conductive, or insulative. The job of conformal coating is to isolate the PCB or components from the environment and even components (i.e. high voltage or high heat) from the rest of the board. To do that properly, a coating must have electrically insulating properties with as high of a dielectric withstand voltage (or strength) as possible.


Is conformal coating waterproof?

While conformal coatings can offer a moisture resistant layer of protection, most cannot be considered waterproof. Even if applied heavily, most coatings are semi-permeable, so allow some amount of moisture through. Conformal coating can, however, prevent current leakage or corrosion due to ambient moisture. To truly waterproof electronics, you either need gasketing to seal the electronics within the packaging or cover the electronics with a waterproof encapsulant or potting compound.


Is conformal coating necessary?

Whether or not conformal coating is required depends on the environment the electronic device will operate in, the reliability requirement of the device, and the cost of failure, whether in dollars or human lives. Typical consumer devices are generally not coated because cost is one of the top driving factors, and a coating step certainly adds to that. Devices operating in harsh environments may require coating, and the type of stresses and contamination will point to the best option, whether that is acrylic resin (AR), silicone resin (SR), urethane resin (UR), or some other type of protection. Aviation, aerospace, and medical devices often require coating because of the mission critical nature of these applications.


What does conformal coating do?

Conformal coating is a specially engineered polymeric film-forming product that protects circuit boards, components, and other electronic devices from harmful environmental conditions like moisture, thermal shock, static, vibration, and contamination. These coatings ‘conform’ to the irregular landscape of the PCB providing increased dielectric resistance, operational integrity, and reliability. There are a number of options for coating technologies, and the best option should depend mainly on the protection required. Application method and ease of rework are also important factors, but should generally be considered secondary to the protective performance needed.

You did not finish submitting your information to request a sample