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Konform SR-X Silicone Conformal Coating
Konform SR-X Silicone Conformal Coating
One-part, clear conformal coating with moisture, corrosion and abrasion resistance
Konform SR-X is a one-part, clear conformal coating with moisture, corrosion and abrasion resistance. It was developed to be the best alternative for Dow Corning conformal coating 1-2577 & 1-2620.
Low VOC coating for maximum flexibility and protection from extreme temperatures, harsh environments, and vibration damage
Silicone conformal coatings are the most universal coating, offering protection for a wide variety of environments. This coating offers resilient, mechanical stress-reducing protection. Utilizing a moisture/humidity-based curing mechanism, this coating cures quickly at ambient conditions.
This high-gloss 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-X is high viscosity, 950 CPS (+/-100), so can be used for the thickest final coat in a dipping application, or thinned for spray systems.
Features & Benefits
- Engineered for applications where flexibility and high temperature resistance are required
- Exceptional dirt, dust, and soil repellency -- surfaces remain clean longer
- Superior transparency
- Superior corrosion resistance
- Low VOC
- Low toxicity – HAPs free
- Silicone coating stable from -76°F/-60°C to 392°F/200°C
- High dielectric strength of 720 volts/mil
- Easily removed with Electro-Wash® Two Step or CircuitWorks® Conformal Coating Remover Pen
- Contains a UV indicator for quality control inspection
- RoHS Compliant
|Shelf Life||1 yr|
|Shipping Name||Coating Solution
What is the difference between full cure and tack-free cure?
Full cure is when it meets all the final specifications. There might be some out-gassing, but it will be as hard as it is going to be, and adhesion is as good as it gets. Tack-free is as the name suggests, not sticky so you can move it along the assembly process.
How can you reduce chemical exposure?
Every organization using hazardous chemicals within their facility has the responsibility to equip their facility and personnel to maintain exposure levels below the TLV. Personal monitoring badges can be used to measure exposure of a specific material. Then, depending on the threshold limit and the application, exposure can be controlled with PPE like masks, face shields, respirators, and even coveralls. If they don’t reduce exposure below the recommended limit, you will need to consider a special ventilation hood or even containment booth. As you can see, as the exposure limit gets down to a certain level, the equipment required to safely use the solvent can get impractical. At that point, your best option is to consider a safer alternative.
What is the difference between dielectric strength and dielectric withstand voltage?
The dielectric strength is material intrinsic property and withstand voltage is surface property which depend on thickness of the material. They can be slightly different for thicker materials, but for conformal coating, the two numbers should be very close or the same. That is because we test coating at 3-5 mils thickness, calculate, then report the value per mil.
What type of UV light / black light should I use for QC inspection of the final conformal coating?
Conformal coating with UV tracer can be inspected with any typical UV lamp which has wavelength of 320-380 nm.
What solvent can I use to thin this conformal coating?
Heptane can be used as a thinning agent. Make sure it is anhydrous, so contains as little moisture as possible.
How do you apply liquid conformal coating? (CTSR-X, CTLED)
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 30 minutes. Full cure requires 24 hours @ 77˚F (25˚C). Heat cure: 30 minutes @ 90˚F (32˚C) then 100 minutes @ 199˚F (93˚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.
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:
- If possible, allow the substrate and coating material to come to approximately the same temperature when applying.
- 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.
- 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
What spigot or spout do you recommend for your metal 5-gallon and 55-gallon drums?
Metal 5-gallon containers come with a flexible pop-out spout for easy pouring. 55-gallon drums are compatible with standard 2" spouts.
How do I figure out the shelf life of a product?
The shelf life of a product can be found on either the technical data sheet (TDS), available on the product page, or by looking on the certificate on conformance (COC). The COC can be downloaded by going to https://www.chemtronics.com/coc. Once you have the shelf life, you will need to add it to the manufacture date for a use-by date. The manufacture date can be identified by the batch number. The batch code used on most of our products are manufacture dates in the Julian Date format. The format is YYDDD, where YY = year, DDD = day. For example, 19200 translates to the 200th day of 2019, or July 19, 2019. This webpage explains and provides charts to help interpret our batch numbers: https://www.chemtronics.com/batch-codes.