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Sumitomo Bakelite North America E 16521A Electrical Encapsulation Grade Epoxy

Category Polymer , Thermoset , Epoxy , Epoxy Encapsulant, Unreinforced
Manufacturer Sumitomo Bakelite North America
Trade Name
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Sumitomo Bakelite North America E 16521A Electrical Encapsulation Grade Epoxy.pdf
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Material Notes:
E-16521A is an encapsulation grade epoxy molding compound suitable for electrical applications such as coils.Information provided by Sumitomo Bak North America, Inc.
Physical Properties Metric English Comments
Bulk Density 0.800 g/cc
0.0289 lb/in³
ASTM D1895
Density 1.60 g/cc
0.0578 lb/in³
ASTM D792
Water Absorption 0.25 %

@Temperature 50.0 °C,
Time 173000 sec
0.25 %

@Temperature 122 °F,
Time 48.0 hour
ASTM D570
Linear Mold Shrinkage 0.0050 - 0.0070 cm/cm
0.0050 - 0.0070 in/in
ASTM D955
Mechanical Properties Metric English Comments
Tensile Strength at Break 62.0 MPa
8990 psi
ASTM D638
Flexural Strength 104 MPa
15100 psi
at rupture; ASTM D790
Flexural Modulus 7.00 GPa
1020 ksi
ASTM D790
Compressive Strength 172 MPa
24900 psi
ASTM D695
Izod Impact, Notched 0.190 J/cm
0.356 ft-lb/in
ASTM D256
Thermal Properties Metric English Comments
CTE, linear, Parallel to Flow 40.0 µm/m-°C
22.2 µin/in-°F
ASTM E831
Deflection Temperature at 1.8 MPa (264 psi) 122 °C
252 °F
Post Baked; ASTM D648A
Electrical Properties Metric English Comments
Dielectric Constant 4.4

@Frequency 1.00e+6 Hz
4.4

@Frequency 1.00e+6 Hz
wet; ASTM D150
Dielectric Strength 14.0 kV/mm

@Frequency 60.0 Hz
356 kV/in

@Frequency 60.0 Hz
step-by-step, dry; ASTM D149
17.0 kV/mm

@Frequency 60.0 Hz
432 kV/in

@Frequency 60.0 Hz
short time, dry; ASTM D149
Dissipation Factor 0.015

@Frequency 1.00e+6 Hz
0.015

@Frequency 1.00e+6 Hz
wet; ASTM D150
Arc Resistance 120 sec
120 sec
ASTM D495
Descriptive Properties Value Comments
Color Black
Form Granular
Molding Method Compression
Transfer
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