Konform® SR-X Silicone Conformal Coating

Konform® SR-X is a one-part, clear conformal coating with moisture, corrosion and abrasion resistance. It's was developed to be the best alternative for Dow Corning conformal coating 12577 & 12620. 

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 available in two different viscosities to match your application process:

  • Konform SR-X (CTSR-X) - Standard viscosity, 82 CPS (+/-20), is ready-to-use for most spray and dipping applictions.
  • Konform SR-X950 (CTSR-X950) - High viscosity, 950 CPS (+/-100), 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
Specifications
  • Meets IPC-CC-830B
  • Passes the laboratory tests of MIL-I-46058C. However, it is not qualified on QPL-46058.
  • UL94 flammability rating V-0
  • MIL-STD 810G salt spray test
  • MS941-04 salt spray test
Shelf Life 1 yr
Shipping Name Coating Solution

Swipe to View Add to Cart Button 

Part # Size Units Per Case Price Per Case Add To Cart
CTSRX-P

1 pint / 0.47L liquid

2 cans $90.54
CTSRX-1

1 gallon / 3.8L liquid

1 $382.58
CTSRX-5

5 gallon / 18.9L liquid

1 $1,573.06
CTSRX-55

54 gallon / 204L liquid

1
CTSRX950-P

1 pint / 0.47L liquid

2 cans $58.64
CTSRX950-1

1 gallon / 3.8L liquid

1 $449.74
CTSRX950-5

5 gallon / 18.9L liquid

1 $1,917.99
CTSRX950-55

54 gallon / 204L liquid

1
Order from an authorized distributor

FAQ's

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: 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

What spigot or spout do you recommend for your metal 5-gallon and 55-gallon drums?

Metal 5-gallon and 55-gallon drums are compatible with standard 3/4" and 2" spouts. Ideally use 3/4" for 5-gallon, 2" for 55-gallon.

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.

Articles

The Ultimate Guide to Conformal Coating

Historically, the only circuit boards going through a conformal coating process were those intended for use in mission-critical applications, like aerospace. Increased popularity surrounding electronic miniaturization and wearable electronics has led to a higher demand for the protection and reliabi...
Read This Post

How To Evaluate The Best Silicone Conformal Coating

2018 was a rough year for PCB assemblers who use silicone conformal coating. Many EMS buyers of silicone conformal coating have experienced shortages, with lead times going from days to weeks, then even to months. All the while, prices have started to skyrocket. Many engineers specify legacy sili...
Read This Post

8 Essential Tips for Conformal Coating Dip Application

For those of you considering dip application in your conformal coating process, the following are general guidelines to bear in mind when exploring this application method.  There are a number of variations of dip coating of PCBs. The most basic is the manual, by hand method. The...
Read This Post
Related Products
You did not finish submitting your information to request a sample