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Adhesive Details
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USG140
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Characteristics
USG140 is an epoxy-based low coefficient of thermal expansion (CTE) structural bonding adhesive for electronic applications. It is a two-component, flowable, addition-curing system that cures at room temperature or elevated temperature to provide strong bonding to silicon, flip chip, BGA, ceramics, LTCC, aluminum, copper, stainless steel, etc. with minimized thermal mismatching stress. The very low CTE formulation provides better thermal cycle performances. USG140 is dispensable.
Special Features and Benefits
• Low CTE for stress compliance
• High thermal stability
• High structural bonding strength
• Low bleeding, low volatile
• Low ionic content
Typical Applications
• Aerospace electronics
• Automotive electronics
• Semiconductor and Telecommunications
• Bonding of die to LTCC, Al, Cu
• Bonding of power devices to heat sinks
• Structural bonding or potting
• Resistance to thermal vibration
USG140 has a shelf life of 6 months when stored at ambient temperature (e.g. 25C) in the originally sealed container. For non-slump (thixotropic) version, please select United Adhesives’ product EP1640NS.
Click here to view the Technical Datasheet (TDS) of this product in details (PDF File) »
Processing Instruction
Important! Only components A and B with the same lot number may be processed together! For the package in a container (not in a cartridge), to ensure homogeneity of the material, the components must be stirred thoroughly before they are removed or processed in order to uniformly disperse any fillers that might have settled during storage. For potting applications, it is recommended to warm the part A to ~60°C, then mix with part B. Any possible air bubbles in mixing or potting process can be removed by vacuum.
We recommend running preliminary tests to optimize conditions for the particular application. Comprehensive processing instructions can be obtained by contacting directly to USGlue.com.
Storage
USG140 has a shelf life of 6 months when stored at ambient temperature (25C) in the originally sealed container. The 'Best use before end' date of each batch appears on the product label. Storage beyond the date specified on the label does not necessarily mean that the product is no longer usable. In this case however, the properties required for the intended use must be checked for quality assurance reasons.
Safety information
General hygiene regulations should be observed. Comprehensive instructions are given in the corresponding Material Safety Data Sheets. They are available on request from USGlue.com.
The data presented in this leaflet are in accordance with the present state of our knowledge, but do not absolve the user from carefully checking all supplies immediately on receipt. We reserve the right to alter product constants within the scope of technical progress or new developments. The recommendations made in this leaflet should be checked by preliminary trials because of conditions during processing over which we have no control, especially where other companies’ raw materials are also being used. The recommendations do not absolve the user from the obligation of investigating the possibility of infringement of third parties’ rights and, if necessary, clarifying the position. Recommendations for use do not constitute a warranty, either express or implied, of the fitness or suitability of the products for a particular purpose. For technical, quality, or product safety questions, please contact directly to USGlue.com.
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