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CHO-SHIELD 604 Highly Electrically Conductive Silver Polyurethane EMI Coating for Semiconductor Packages

Brand: Chomerics

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
  • 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 substrates

Specifications

Brand

Color

  • Silver

Filler Material

  • Silver

Film Thickness

  • 0.025 mm

Noise Shielding Level

  • > 70 dB

Operating Temperature

  • -40° to 125° C

Package Type

  • 10 Fluid oz. Aluminum Bottle

Percent Solids by Weight

  • 30 %

Polymer Material Options

  • Polyurethane

Primer Included

  • Not Required

Shelf Life

  • 9 Months

Specific Gravity

  • 1.23

Surface Resistance

  • < = 0.010 Ω/square

Viscosity Grade

  • 19 to 25 seconds Zahn Cup 2
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