Konform SR
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Konform® SR Silicone Conformal Coating

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Konform® SR Silicone Conformal Coating

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Konform® SR Silicone Conformal Coating

Konform® SR provides maximum flexibility for extreme temperatures. This transparent conformal coating provides ideal protection for both rigid and flexible printed circuit boards. Cured coatings are hydrolytically stable and retain their physical electrical properties after high temperature and humidity exposure. Konform® SR will not stress delicate circuit components.

Konform SR is available in three different viscosities to match your application process:

  • Standard viscosity - 40± 5 cps
  • Medium viscosity - 60± 5 cps
  • High viscosity - 120± 5 cps

Features & Benefits

  • Engineered for applications where flexibility and high temperature resistance are required
  • Silicone coating stable from -85°F/-64°C to 390°F/199°C
  • High dielectric strength of 1100 volts/mil
  • Easily removed with Electro-Wash® Two Step or CircuitWorks® Conformal Coating Remover Pen
  • Passes the laboratory tests of MIL-I-46058C. However, it is not qualified on QPL-46058.
  • Compliant to IPC-CC-830A
  • RoHS Compliant
  • UL Recognized, File E76307
  • UL 94 V-0
  • Contains a UV indicator for Quality Control inspection using medium intensity light at 265-335 nm

Applications

  • Extends component life by protecting against adverse environments
  • Good insulation properties, excellent flexibility
  • Resists moisture, salt, fungus, corrosive vapors, and severe environments
  • Engineered to withstand heat generated by electronic circuitry as well as climatic temperatures
Specifications IPC-CC-830A,UL Recognized
NSN 5970-01-417-4152
Shelf Life 1 yr
Shipping Name Coating Solution

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Part # Size Units Per Case
CTSR-12

10 oz. (413 ml) aerosol

12 cans
CTSR-P

1 pint (473 ml) can

2 cans
CTSR-1

1 gal / 3.7 L container

1 container
CTSR-5

5 gal (18.5 liters) container
Minimum - 5 units

1 container
CTSR-MV5

5 gal / 18.5 L container
Minimum order - 10 units

1
CTSR-HV1

1 gal / 3.7 L container
Minimum order - 55 units

1 container
Order from an authorized distributor

FAQs

How do you apply liquid conformal coating? (CTSR)

Apply to clean, moisture-free surface.  Areas not requiring coating should be masked. Application: Coating may be applied by spraying, brushing, dipping or flow coating.  Allow coating to flow around components. Cure:  Room temperature cure: A 1.0 mil coating will be tack-free in 15 minutes.  Full cure requires 24 hours @ 77˚F (25˚C). Heat cure: 8 hours @ 170˚F (77˚C). An open vessel of water placed in the drying chamber will facilitate curing. UV detectable for QC inspection. Removal:  Coating may be removed by soaking in Electro-Wash® Two Step Cleaner Degreaser. Use CircuitWorks® Conformal Coating Remover Pen for spot removal. After the new component is installed, areas should be cleaned and recoated.

How do you use an aerosol conformal coating? (CTSR-12)

Shake well. SURFACE MUST BE CLEAN & MOISTURE FREE. Areas not requiring coating should be masked. Coating:  Spray top to bottom, allowing coating to flow around components. Rotate board 90˚ and repeat process 2 or more times.  If nozzle clogs, clean with solvent or use new nozzle. Cure:  A 1.0 mil coating will be tack-free in 15 minutes.  Full cure requires 24 hours @77˚F/25˚C. Heat Cure: 8 hours @170˚F/77˚C. An open vessel of water placed in the drying chamber will facilitate curing. UV detectable for QC inspection. An open vessel of water placed in the drying chamber will facilitate curing. UV detectable for QC inspection. Removal: Coating may be removed by soaking in Electro-Wash® Two Step. Use CircuitWorks® Conformal Coating Remover Pen for spot removal. After the new component is installed, areas should be cleaned and re-coated.

When using conformal coatings in general, what causes a "milky" cure or white "foam" on the substrate?

In almost all cases, the cloudy or milky cure comes from coating in higher humidity conditions. The white foam (from an aerosol) is caused the same way. We have the following suggestions: 1) If possible, allow the substrate and coating material to come to approximately the same temperature when applying. 2) Avoid applications in RH > 60%. High humidity ranges will discolor some coating resins and will start curing others. Besides the aesthetic value, it certainly may affect adhesion to the material. 3) Specifically on the silicone coating, if the resulting application is foamy, increase the focal point of the can, ie back off to about 10 -12” from the substrate & make 2 -3 light passes rather than one heavy pass to coat the board.

What types of coverage areas are to be expected with the conformal coatings in general?

Wet film thickness = Sq. ft. per gal. | 0.1 mil = 16,040 | 0.5 mil = 3,210 | 1 mil = 1,600 | 2 mil = 802 | 3 mil = 535 | 4 mil = 401 | 5 mil = 321 | 6 mil = 267 | 7 mil = 229 | 8 mil = 201 | 9 mil = 178 | 10 mil = 160

Articles

HOW-TO: Conformal Coating Application Using Aerosol Spray

HOW-TO: Conformal Coating Application Using Aerosol Spray

Step-by-step instructions on how to properly apply aerosol coatings without common defects.
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The Ultimate Guide to Conformal Coating

The Ultimate Guide to Conformal Coating

Conformal coating is engineered to protect circuit boards, components, and other electronic devices from moisture, thermal shock, static, vibration, and contamination. These coatings ‘conform’ to the irregular landscape of the PCB providing increased dielectric resistance, operational integrity, and...
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