Chomerics Europe, a global manufacturer of electromagnetic interference (EMI) shielding materials, has released the Cho-Shield® 604 and the Cho-Shield® 571, two highly conductive coatings designed to shield circuit boards and semiconductor packages that require protection from EMI.
Cho-Shield® 604 is a one-component, silver-filled polyurethane material effective for shielding up to 100dB at frequencies of 10-10,000 MHz and 80dB at 10-18 GHz. Cho-Shield® 571 is a two-component, silver-filled epoxy effective for shielding up to 120dB at 10-10,000 MHz and 100db at 10-18 GHz. Both materials can withstand wave solder temperatures in excess of 500°F (262°C).
