TY - GEN
T1 - "Green" nanocomposites for electronic packaging
AU - Das, Rabindra N.
AU - Papathomas, Konstantinos I.
AU - Poliks, Mark D.
AU - Markovich, Voya R.
PY - 2009
Y1 - 2009
N2 - This paper examines the use of nanocomposites in the area of "green" technology. A variety of green materials for advanced organic packaging have been developed. These include capacitors and resistors as embedded passives, resin coated Cu (RCC) as buildup layers, highly conducting nanomicro media for Z-interconnects, lead free assembly paste, ZnO based additives and magnetic materials. Nanocomposites can provide high capacitance densities, ranging from 5 nf/inch2 to 25 nF/inch2, depending on composition, particle size and film thickness. The electrical properties of capacitors fabricated from BaTiO3-epoxy nanocomposites showed a stable capacitance over a temperature range from 20?C to 120 ?C. A variety of printable discrete resistors with different sheet resistances, ranging from 1 ohm to 120 Mohm, processed utilizing a large panel format (19.5 x 24 inches) have been fabricated. Low resistivity nanocomposites, with volume resistivity in the range of 10-4 ohm-cm to 10-6 ohmcm depending on composition, particle size, and loading can be used as conductive joints for high frequency and high density interconnect applications. A variety of metals including Cu, Ag, LMP (low melting point) and LMP-coated Cu fillers have been used to make halogen free, lead free electrically conducting adhesive technology as an alternative to solders. Halogen free resin modified with ceramics/organic particles can produce low Dk resin coated Cu (RCC) with Dk value in the range between 4.2 and 3.2. Similarly, low loss RCC materials can be produced by combining HF resin with low loss fillers. The mechanical strength of the various RCC was characterized by a 90 degree peel test and measurement of tensile strength. RCC exhibited peel strength with Gould's JTC-treated Cu as high as 6 lbs/inch for halogen free RCC. These halogen free RCC materials exhibit coefficients of thermal expansion (CTE), ranging from 27 ppm/?C to 32ppm/?C. Altogether, this is a new direction in the development of Green Packages and more specifically in the development of coreless substrates for semiconductor packaging.
AB - This paper examines the use of nanocomposites in the area of "green" technology. A variety of green materials for advanced organic packaging have been developed. These include capacitors and resistors as embedded passives, resin coated Cu (RCC) as buildup layers, highly conducting nanomicro media for Z-interconnects, lead free assembly paste, ZnO based additives and magnetic materials. Nanocomposites can provide high capacitance densities, ranging from 5 nf/inch2 to 25 nF/inch2, depending on composition, particle size and film thickness. The electrical properties of capacitors fabricated from BaTiO3-epoxy nanocomposites showed a stable capacitance over a temperature range from 20?C to 120 ?C. A variety of printable discrete resistors with different sheet resistances, ranging from 1 ohm to 120 Mohm, processed utilizing a large panel format (19.5 x 24 inches) have been fabricated. Low resistivity nanocomposites, with volume resistivity in the range of 10-4 ohm-cm to 10-6 ohmcm depending on composition, particle size, and loading can be used as conductive joints for high frequency and high density interconnect applications. A variety of metals including Cu, Ag, LMP (low melting point) and LMP-coated Cu fillers have been used to make halogen free, lead free electrically conducting adhesive technology as an alternative to solders. Halogen free resin modified with ceramics/organic particles can produce low Dk resin coated Cu (RCC) with Dk value in the range between 4.2 and 3.2. Similarly, low loss RCC materials can be produced by combining HF resin with low loss fillers. The mechanical strength of the various RCC was characterized by a 90 degree peel test and measurement of tensile strength. RCC exhibited peel strength with Gould's JTC-treated Cu as high as 6 lbs/inch for halogen free RCC. These halogen free RCC materials exhibit coefficients of thermal expansion (CTE), ranging from 27 ppm/?C to 32ppm/?C. Altogether, this is a new direction in the development of Green Packages and more specifically in the development of coreless substrates for semiconductor packaging.
UR - https://www.scopus.com/pages/publications/70349666721
U2 - 10.1109/ECTC.2009.5074102
DO - 10.1109/ECTC.2009.5074102
M3 - Conference contribution
SN - 9781424444762
T3 - Proceedings - Electronic Components and Technology Conference
SP - 793
EP - 800
BT - 2009 Proceedings 59th Electronic Components and Technology Conference, ECTC 2009
T2 - 2009 59th Electronic Components and Technology Conference, ECTC 2009
Y2 - 26 May 2009 through 29 May 2009
ER -