Brush Wellman Copper/Tungsten Heatsinks Reach Copper Performance Levels
Source: Zentrix Technologies
Boston, MA, June 13, 2000 - Zentrix Technologies, Powder Metal Products Group, (a business unit of Electronic Products Division) will change the history of copper/tungsten (Cu/W) heatsinking by the introduction of a new functionally graded material (FGM), Cu/W heatsink design at the MTTS 2000 show, in booth # 219.
320 W/mK Copper/Tungsten (Cu/W) HeatsinksM
Complementing its current line of Cu/W metal matrix composites, Brush Wellman pushes the performance envelop to a breakthrough performance level of high thermal dissipation, low thermal expansion heatsinks, using an innovative functionally graded material (FGM) design. Designers will use these heatsinks for microelectronic packaging applications and as mounts or submounts for semiconductor laser die.
The new FGM flanges consist of a high thermal conductivity core that is surrounded and constrained by a lower thermal conductivity, lower thermal expansion body. "The new FGM approach is a unique technology that allows the designer to tailor the thermal conductivity and thermal expansion of the composite independently.
Depending on the grade of Cu/W material used as the surrounding body, an effective thermal conductivity for the die mounting area (core) of 320 W/mK is obtained with an effective coefficient of thermal expansion of 5.5 - 7.3 ppm/°C. The FGM designs will keep the die mounting area cool and stress free during temperature excursions thus providing increased performance." Stated Dr. Juan L. Sepulveda, Director of Technical Marketing, Powder Metal Products Group.
Independent testing completed on a silicon power chip FGM package has shown a reduction of 18.6% in thermal resistance as compared to a standard 150 W/mK flange. This performance is close to a maximum attainable of 23.1% reduction in thermal resistance to be obtained when using an OFHC copper flange.
Net shape FGM parts are manufactured to customer specifications. The Powder Metal Products Group's facility in Tucson, Arizona is fully integrated to produce ready-to-use parts from raw powders. Different alternative plating schemes are offered including electroless and electrolytic Ni and electrolytic Au.
Brush Wellman Inc. is a wholly owned subsidiary of Brush Engineered Materials Inc. (NYSE-BW). Brush Engineered Materials Inc. headquartered in Cleveland, Ohio, is a manufacturer of engineered materials. The Company supplies worldwide markets with Beryllium Products, Alloy Products, Electronic Products, Precious Metal Products, and Engineered Materials Systems.
320 W/mK Copper/Tungsten (Cu/W) HeatsinksM
Complementing its current line of Cu/W metal matrix composites, Brush Wellman pushes the performance envelop to a breakthrough performance level of high thermal dissipation, low thermal expansion heatsinks, using an innovative functionally graded material (FGM) design. Designers will use these heatsinks for microelectronic packaging applications and as mounts or submounts for semiconductor laser die.
The new FGM flanges consist of a high thermal conductivity core that is surrounded and constrained by a lower thermal conductivity, lower thermal expansion body. "The new FGM approach is a unique technology that allows the designer to tailor the thermal conductivity and thermal expansion of the composite independently.
Depending on the grade of Cu/W material used as the surrounding body, an effective thermal conductivity for the die mounting area (core) of 320 W/mK is obtained with an effective coefficient of thermal expansion of 5.5 - 7.3 ppm/°C. The FGM designs will keep the die mounting area cool and stress free during temperature excursions thus providing increased performance." Stated Dr. Juan L. Sepulveda, Director of Technical Marketing, Powder Metal Products Group.
Independent testing completed on a silicon power chip FGM package has shown a reduction of 18.6% in thermal resistance as compared to a standard 150 W/mK flange. This performance is close to a maximum attainable of 23.1% reduction in thermal resistance to be obtained when using an OFHC copper flange.
Net shape FGM parts are manufactured to customer specifications. The Powder Metal Products Group's facility in Tucson, Arizona is fully integrated to produce ready-to-use parts from raw powders. Different alternative plating schemes are offered including electroless and electrolytic Ni and electrolytic Au.
Brush Wellman Inc. is a wholly owned subsidiary of Brush Engineered Materials Inc. (NYSE-BW). Brush Engineered Materials Inc. headquartered in Cleveland, Ohio, is a manufacturer of engineered materials. The Company supplies worldwide markets with Beryllium Products, Alloy Products, Electronic Products, Precious Metal Products, and Engineered Materials Systems.
Media Contact:
Lisa Valenzuela
Marketing Communications Manager
6100 S. Tucson Blvd.
Tucson, AZ. 85706
PH: 520-741-3419
FX: 520-573-9077
Email: lisa_valenzuela@brushwellman.com
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