Parker Chomerics CHO-SHIELD® 604 is a highly conductive, flexible, advanced coating developed for high volume, precise spray applications on circuit boards and semiconductor packages. Combined with innovative technologies and packaging designs, CHO-SHIELD® 604 can provide board level or package level EMI shielding of electrical components. Applied correctly, CHO-SHIELD® 604 can replace stamped metal cans, saving valuable board space and reducing the overall cost of board level EMI shielding. CHO SHIELD® 604?”s specially formulated flexible polymer system provides tenacious adhesion and good environmental stability.Features/Benefits:• ? One component• ? Silver flake filler• ? Polyurethane coating• Designed for high volume spray applications• ? Exceptional working life at room temp. (cures only when heated >125°C)• ?Flexible coating which provides great adhesion to a variety of substratesTypical Applications:• ?Board level EMI shielding of printed circuit boards (PCBs) or other electrical components
Polymer Family
Polyurethane
Filler Material
Silver
Packaging
10 fluid ounce aluminum bottle
Primer Included
Not required
Color
Silver
Viscosity Grade
19 to 25 seconds Zahn Cup 2
Surface Resistance (ohms/square)
<= 0.010
Shielding Effectiveness (dB)
>70
Film Thickness (mm)
0.025
Specific Gravity
1.23
Average Solids by Weight
30%
Temperature Range (C)
-40 to 125
Shelf Life (Months)
9
