The CHO-MASK II family of EMI foil tapes includes both Standard Tack (ST) and High Tack (HT) versions for providing a conductive, non-corroding surface on painted metal electronic enclosures. CHO-MASK II tapes consist of recessed polyester paint masking film covering a layer of either 1 oz. (28.4g) or 2 oz. (56.7g) tin-plated copper foil. The back of the foil features a conductive pressure sensitive adhesive (PSA). CHO-MASK II tape is applied to clean metal frame, door and panel surfaces where electrical continuity is required. After painting, the peel-off mask is easily removed, allowing the paint to seal both edges of the foil layer. The foil imparts a clean, electrically conductive path from the panel, through an EMI gasket, to the cabinet frame. It also provides grounding points within the enclosure.

Product Features:
• More cost-effective and environmentally friendly than plating and coating methods
• Peel-off mask is removed easily any time, at any temperature
• Mask is recessed from edges for paint overlap and corrosion protection
• Solvent/chemical resistant
• Maintains performance after10,000 door closure cycle
• Passes MIL-STD-810 Salt Fog testing
• Foil tape meets MIL-T-47012
• Tin-plating on foil meets MIL-T-10727
• Pressure sensitive adhesive contains highly stable, conductive particles for long term reliability
• When used in conjunction with Parker Chomerics EMI gaskets, provides effective EMI shielding performance