Sumitomo Bakelite E 2748A Epoxy Molding Compound

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Sumitomo Bakelite E 2748A Epoxy Molding Compound
Categories:	Polymer; Thermoset; Epoxy; Epoxy Molding Compound
Material Notes:	E 2748A is a glass reinforced epoxy molding compound, with good impact strength combined with soft flow for the encapsulation of devices requiring high quality and thermal shock resistance. Information provided by Sumitomo Bakelite High Performance Plastics (sbhpp)
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Physical Properties	Metric	English	Comments

Specific Gravity	1.76 g/cc	1.76 g/cc	ASTM D792
Apparent Bulk Density	0.700 g/cc	0.0253 lb/in³	Powder; ASTM D1895
Water Absorption	0.20 % @Time 173000 sec	0.20 % @Time 48.0 hour	ASTM D570
Linear Mold Shrinkage	0.0040 - 0.0060 cm/cm	0.0040 - 0.0060 in/in	ASTM D955

Mechanical Properties	Metric	English	Comments
Tensile Strength	76.0 MPa	11000 psi	ASTM D638
Flexural Strength	142 MPa	20600 psi	ASTM D790
Flexural Modulus	12.4 GPa	1800 ksi	ASTM D790
Compressive Strength	210 MPa	30500 psi	ASTM D695
Izod Impact, Notched	0.310 J/cm	0.581 ft-lb/in	ASTM D256A

Electrical Properties	Metric	English	Comments
Dielectric Constant	4.5 @Frequency 1e+6 Hz	4.5 @Frequency 1e+6 Hz	wet; ASTM D150
Dielectric Strength	>= 14.2 kV/mm @Frequency 60 Hz	>= 361 kV/in @Frequency 60 Hz	ST, dry
Dissipation Factor	0.010 @Frequency 1e+6 Hz	0.010 @Frequency 1e+6 Hz	wet; ASTM D150
Arc Resistance	180 sec	180 sec	ASTM D495

Thermal Properties	Metric	English	Comments
CTE, linear, Parallel to Flow	17.0 µm/m-°C	9.44 µin/in-°F	ASTM E831

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PSUMIT128 / 193933

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