If you are seeking a source for outstanding protection against moisture and environmental elements for printed circuit assemblies, look no further than HumiSeal 1C49LVF. This conformal coating is silicone-based, and VOC solvent-free. HumiSeal 1C49LVF is moisture curing, repairable, flexible, has a low viscosity, and fluoresces under UV light when an inspection is required. This material cures at room temperature or elevated temperatures and is RoHS Directive 2002/95/EC compliant. This product is recognized under UL File Number E105698.
The density of HumiSeal 1C49LVF Conformal Coating is 0.97 ± 0.03 g/cm³ per ASTM D1475, and its solids content is 50% by weight per Fed-Std-141, Meth. 4044. This material’s viscosity is 550 ± 250 centipoise per Fed-Std-141, Meth. 4287, and its VOC is 0 grams/liter. The recommended coating thickness for HumiSeal 1C49LVF Conformal Coating is 50 – 200 microns, and the tack-free time is <10 minutes at room temperature. The recommended curing conditions for this material is 24 hours at room temperature or 20 minutes at 76°C, and it is suggested to place a pan of water inside the oven during the curing process.
The time that is required for HumiSeal 1C49LVF Silicone Conformal Coating to reach optimum properties is 7 days, and the recommended stripper to pair with this material is HumiSeal Stripper 1090. This product’s shelf life from its date of manufacture is 12 months, and its flammability is V-0 per UL94. The glass transition temperature for HumiSeal 1C49LVF Silicone Conformal Coating is <-65°C, and it’s dielectric withstand voltage is >1500 volts per MIL-I-46058C. The shore hardness A of this conformal coating is 25 per ASTM D2240, and its volume resistivity is 4.25 x 1018 ohm-cm per ASTM D257. For further technical data on this product, please see the HumiSeal 1C49LVF Technical Data Sheet.
| Density | 0.97 ± 0.03 g/cm³ per ASTM D1475 |
| Solids Content | 50% by Weight per Fed-Std-141, Meth. 4044 |
| Viscosity | 550 ± 250 Centipoise per Fed-Std-141, Meth. 4287 |
| Tack-Free Time | <10 minutes at Room Temperature |
| Recommended Curing Conditions | 24 Hours at Room Temperature or 20 Minutes at 76°C |
| Shelf Life | 12 Months from DOM |
For the effective application of HumiSeal 1C49LVF it is important to first clean the substrate. Problems may occur if contamination exists underneath the conformal coating. These problems could possibly lead to assembly failures. Contaminants including but not limited to dirt, grease, wax, flux residues and moisture should be removed from surfaces for optimum performance. Thorough testing should take place before HumiSeal 1C49LVF is applied onto “no clean” assembly materials in order to confirm reliability and compatibility of the coated assembly. This product has been designed for application with no added thinning materials. In the case that additional product handling assistance is required, please contact a Krayden Technical Representative.
HumiSeal 1C49LVF Conformal Coating is a silicone based coating for printed circuit assemblies that can be brushed or sprayed onto substrates. Dipping is also a good way to achieve and even layer of this coating and eventually a uniform film. This product is great for applications requiring flexibility and occasionally repair. For added material on application methods or product handling precautions please contact Krayden, an authorized distributor of HumiSeal Coatings.
