Anti damp/corrosion protection silicone conformal coating PCB and electronic products
DHE-350 conformal coating is a low viscosity, solventless silicone coating that cures very rapidly, at room temperature, to a soft, transparent silicone rubber. DHE-350 conformal coating can also be cured using a low temperature oven process to reduce cure and handling times, making it an excellent candidate to consider for high volume production conformal coating of printed circuit board assemblies (especially for PV panels after welding) with temperature limited components.
The cleanliness of the circuit board substrate is critical to successful application of the conformal coating and its long-term performance.
Surfaces must be free of moisture, dirt, wax, grease and other contaminants. Failure to remove contamination can lead to long-term failure of the circuit assembly.
Solder flux residues on the surface of a printed circuit board can greatly impact the performance of a conformal coating by interfering with coating adhesion and possibly interfering with the coating's cure mechanism. This is of particular concern when using 'no-clean' flux systems. Careful compatibility testing, with the flux system to be used, is strongly recommended.
- Automated pattern coating
DHE-350 conformal coating typically cures under room temperature conditions. Depending upon ambient conditions, coated circuit boards may be fully cured on 48 hours.
Product Safety, Handling and Storage:
Customers should review the latest Safety Data Sheet (SDS) and label for product safety information, safe handling instructions, personal protective equipment if necessary, emergency service contact information, and any special storage conditions required for safety.
SDS are available upon request, from any DHE representative.
Special precautions must be taken to prevent moisture from contacting DHE-350 conformal coatings. Containers should be kept tightly closed and head or air space minimized. Partially filled containers should be purged with dry air or other gases, such as nitrogen.
The product should be stored in its original packaging with the cover tightly attached to avoid any contamination. Store in accordance with any special instructions listed on the product label. The product should be used by its 'Use Before' date as indicated on the product label.