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Fine-L-Kote UR Urethane Conformal Coating

Chemical Family
Urethanes

Fine-L-Kote UR Urethane Conformal Coating is a Techspray® product that comes in a variety of coating formulas to meet field and engineering requirements. Specifications are generally determined by the type of protection required. Thermal, moisture, and static resistance, for example. Coatings contain Opti/Scan to allow quality control inspection of coating coverage and evenness on a PCB. When a coated board is exposed to a common, low-cost UV (short-wave black) light, the coated areas glow. The thicker the coating, the brighter the glow.

Properties

Physical Form
Liquid

Product families

Applications

Electrical & Electronics — Packaging & Assembly
  • Electronics Coatings
Electrical & Electronics — Parts & Components
  • Printed Circuit Boards (PCBs)

Product Families

Ready-to-Use Products — Paints & Coatings
  • Protective Coatings

Other characteristics

Brand
Fine-L-Kote
Features

Abrasion Resistant, Chemical Resistant, Excellent Moisture Resistance, Good Thermal Stability, UV Detectable

Product Type
Conformal Coating
Application Area
Printed Electronics
Application Method
Brush, Dip Coating, Spray
Odor
Aromatic
Markets
Electrical & Electronics
Shelf LIfe
1 Year
Cure
Heat Cure
Technology
Ready-to-Use Products
Specifications
• IPC-CC-830B
Quality Standards
IPC-CC-830B
Application Methods
  • Brush
  • Dip Coating
  • Spray
Usage Instruction

Spray Application: Apply top to bottom, allowing coating to flow evenly around components. Rotate PCB 90º and repeat application. Rotate and apply coating two additional times, then allow board to cure. If additional thickness is desired, apply additional coatings. When using liquid spray with automatic dispensing equipment, adjustments may be required in application rate and viscosity. Dip Application: Using automatic equipment or hand immersion technique, slowly immerse PCB into the coating and remove slowly. Use an average rate of approximately 1 foot per minute. After allowing the board to cure, process may be repeated to achieve desired thickness. Brush Application: Evenly apply coating to areas desired at thickness required. Allow time for curing before reapplying to achieve a thick coating. Use WonderMASK to protect components during conformal coating process. After application, cured Fine-L-KoteTM may be removed using Techspray Conformal Coating Removal Pen (2510-N or 2510-P).

Environmental Policy

Techspray® is committed to developing products to ensure a safer and cleaner environment. We will continue to meet and sustain the regulations of all federal, state and local government agencies.

Benefits and Features

• Moisture resistant • Chemically resistant • Abrasion resistant • UL94 V-0 – nonflammable final coat • IPC-CC-830B qualified • UV indicator for black light QC inspection

Certifications and Compliance
UL 94
Ready to Use Product Features
  • Abrasion Resistant
  • Chemical Resistant
  • Excellent Moisture Resistance
  • Good Thermal Stability
  • UV Detectable

Technical data

Table 1 of 2

6 rows
CharacteristicValueUnit
Flash Point (Closed Cup)81.0ºF
Flammable LimitsLower 1%
Flammable LimitsUpper 7%
Boiling/Condensation Point300.2º F
Relative Density0.93—
Volatility86.0% (w/w)

Table 2 of 2

12 rows
CharacteristicValueUnit
Thermal Resistant120.0°C
Dielectric Strength380.0volts/mil
Dielectric Strength380.0V/Mil
Cure TypeThermal/Air—
Tack Free Time15.0minutes
Accelerated Cure Time/Temperature (2 Step, 49°C)20.0minutes
Accelerated Cure Time/Temperature (2 Step, 82°C)30.0minutes
Ambient Cure Time24.0Hrs
Viscosity (Bulk)2022-10-20cps
Operating Temperature Range-30 to 121°C
Insulation Resistance1.78 x 1016ohms
Coverage (1 mil dry film, 1 gal liquid, 81.8 m²)880.0ft²

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