Techspray 2102-12S Fine-L-Kote SR Silicone Conformal Coating Standard Viscosity 12 oz Aerosol / 12 per case
Techspray 2102-12S Fine-L-Kote SR — Silicone Conformal Coating | Standard Viscosity | 12 oz Aerosol, Case of 12
Techspray Fine-L-Kote SR (2102) is a professional silicone conformal coating engineered for electronics requiring protection across extreme temperature ranges, high-humidity environments, and applications subject to vibration and mechanical stress. Its rubbery, flexible nature provides excellent vibration resistance and thermal stability from -65°C to +200°C. SR meets IPC-CC-830B, passes the laboratory tests of MIL-I-46058C, and carries UL recognition under UL746E (file #E475454).
The 2102-12S is the standard viscosity (4–10 cps) aerosol format, sold as a case of 12 x 12 oz cans. Ideal for manual spray application in lower-volume or field environments. For high-viscosity selective coating or dipping applications, see the 2102-HV series.
Technical Data Sheet (TDS) | Safety Data Sheet (SDS)
Specifications
| Part Number | 2102-12S |
| Product Name | Fine-L-Kote SR Silicone Conformal Coating |
| Chemistry | Silicone |
| Viscosity | Standard — 4–10 cps |
| Format | 12 oz aerosol, sold as case of 12 |
| Dielectric Strength | 1,100 volts/mil |
| Thermal Resistance | Up to 392°F (200°C) |
| Temperature Range | -65°C to +200°C |
| Compliance | IPC-CC-830B; passes MIL-I-46058C lab tests (not QPL listed); UL recognized UL746E #E475454 |
| UV Fluorescence | Yes |
| Flexibility | High — rubbery, vibration resistant |
| Abrasion Resistance | Low (characteristic of silicone chemistry) |
| Manufacturer | Techspray |
Key Features
- Wide temperature range (-65°C to +200°C) — ideal for automotive, industrial, and outdoor electronics subject to extreme thermal cycling
- Excellent moisture and salt spray resistance — proven protection for high-humidity and outdoor signage applications
- Vibration and flex resistant — rubbery silicone nature absorbs mechanical stress, reducing solder joint and component fatigue
- UL recognized (UL746E #E475454) — meets safety recognition requirements for end-product compliance
- IPC-CC-830B compliant — meets industry standard for conformal coating qualification testing
- Passes MIL-I-46058C lab tests — suitable for mil-spec adjacent applications (note: not QPL-46058 listed)
- UV fluorescent — enables inspection under UV light to verify coverage and identify missed areas
- Good chemical resistance — resists flux residues, solvents, and cleaning agents typical in PCB environments
Industries & Applications
- Consumer and industrial electronics — PCB protection in high-humidity or thermally demanding environments
- Automotive electronics — ECU, sensor, and control module protection subject to temperature cycling and vibration
- Outdoor and signage electronics — moisture and UV-resistant protection for outdoor-deployed assemblies
- Telecommunications — protection for networking and switching hardware in harsh environments
- Military and aerospace adjacent — MIL-I-46058C lab test compliance for non-QPL applications
Frequently Asked Questions
What is the difference between Fine-L-Kote SR standard viscosity (2102-12S) and high viscosity?
The standard viscosity (2102-12S, 4–10 cps) is optimized for aerosol spray application and provides thinner, more even coverage for manual and handheld spray methods. The high viscosity version (70–80 cps) is better suited for selective coating equipment and dipping processes where greater film build is needed. Both contain the same silicone chemistry and performance characteristics.
Is Fine-L-Kote SR MIL-SPEC qualified?
Fine-L-Kote SR passes the laboratory tests of MIL-I-46058C but is not listed on the Qualified Products List (QPL-46058). It is appropriate for commercial and industrial applications where MIL-I-46058C test compliance is required but QPL listing is not mandated.
Can silicone conformal coating be removed or reworked?
Silicone conformal coatings are among the most difficult to remove. Mechanical removal (scraping, micro-blasting) is the most reliable method. Chemical stripping with specialized silicone strippers is possible but slow. Design for rework should consider this — if frequent rework is anticipated, an acrylic or urethane coating may be preferable.
Why is silicone conformal coating not abrasion resistant?
The rubbery, flexible nature of silicone that makes it excellent for vibration resistance also makes it soft and susceptible to abrasion. For applications requiring abrasion resistance, consider epoxy or polyurethane conformal coatings instead.
What environments is Fine-L-Kote SR best suited for?
Fine-L-Kote SR excels in high-humidity environments, outdoor applications, and assemblies subject to extreme temperature cycling (-65°C to +200°C) or mechanical vibration. It is commonly used for outdoor signage electronics, automotive underhood assemblies, and industrial controls in thermally demanding locations.
