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Silver-filled Epoxy Resin
September 19, 2007 |Estimated reading time: Less than a minute
CRANSTON, R.I. A two-component epoxy adhesive, 40-3900 from Epoxies, Etc., is an electrically conductive epoxy resin said to offer conductivity with an electrical resistivity value of < 1 X 10-4 Ω cm.
The resin operates at a temperature range of -50° to 170°C. 40-3900 is designed for chip bonding in microelectronics and optoelectronics applications, and can also be used in micro-wave EMI and RFI shielding applications, as well as the assembly or repair of PCBs, waveguides, and electronic modules. It's also suitable as a cold solder. The resin is formulated with pure silver (no alloys), and is designed in a 1:1 mix ratio. Both the resin and the hardener have silver powder throughout.