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Semi sintering die attach pastes are drop in solutions, identical to standard die attach paste applications but without the need for high pressure and temperature for sintering. They are characterized by excellent workability, allowing for consistent dispensing for 24 continuous hours, without silver settling or separation.
Lead-free die attach materials that offer simplified processing, robust reliability and best-in-class thermal and electrical performance for high power density semiconductor packages.
Smaller, higher functioning devices within applications in various market sectors are increasing power densities and driving the need for more effective heat dissipation. While thermal interface materials offer this capability at the board and component level, more user-friendly and effective thermal management solutions are needed at the die level.
High thermal semi-sintering die attach materials enable robust package-level sintering and overcome the regulatory challenges of solder, thermal conductivity limitations of traditional die attach materials, and processability complexities of pure sintering pastes. The LOCTITE® ABLESTIK® ABP 8068T portfolio features high thermal, semi-sintering die attach pastes that offer simplified processing, and best-in-class thermal and electrical performance with robust reliability for today’s high power density devices. They also offer an open time of up to two hours and void-free bond lines, promoting high reliability and manufacturing flexibility.
Silver filled High thermal pastes,allow for excellent dispensing, but cannot achieve ultra-high thermal conductivity due to limited filler loading and conductivity only from metal to metal contact; there is no interfacial metallic formation.
Pure sintering pastes with no resin in the matrix are highly silver-filled pastes and can achieve ultra-high thermal conductivity but have limitations and need special processing such as high termperature and high pressure to eliminate porosity or voiding.
Semi-sintering, or hybrid sintering is a combination of sintered silver and a resin system. Processing is similar to that of standard die attach pastes with robust reliability, best-in-cass electrical and thermal performance, and high-volume manufacturing capability.