Tra-Con Tra-Bond 933-1 Moisture Resistant Chip Encapsulant

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Tra-Con Tra-Bond 933-1 Moisture Resistant Chip Encapsulant
Categories:	Polymer; Thermoset; Epoxy; Filled/Reinforced Thermoset
Material Notes:	TRA-BOND 933-1 one component, highly filled, electrically insulating epoxy encapsulant is designed for encapsulating microelectronic chips. This epoxy provides excellent environmental and mechanical protection. TRA-BOND 933-1 encapsulant exhibits a longer work life and a lower moisture sensitivity than the anhydride-cured systems. The low coefficient of thermal expansion minimizes stress effects on components and wiring during thermal shock tests. Information provided by Tra-Con Inc.
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Physical Properties	Metric	English	Comments

Specific Gravity	2.10 g/cc	2.10 g/cc	Cured
Water Absorption	0.11 %	0.11 %
Viscosity	360500 cP @Temperature 25.0 °C	360500 cP @Temperature 77.0 °F	After mixing

Chemical Properties	Metric	English	Comments
Ionic Impurities - Na (Sodium)	55 ppm	55 ppm
Ionic Impurities - Cl (Chloride)	300 ppm	300 ppm

Mechanical Properties	Metric	English	Comments
Hardness, Shore D	92	92
Adhesive Bond Strength	17.2 MPa	2500 psi	Lap shear, alum to alum, 2 hrs @ 150°C

Electrical Properties	Metric	English	Comments
Volume Resistivity	1.00e+16 ohm-cm @Temperature 100 °C	1.00e+16 ohm-cm @Temperature 212 °F
Dielectric Constant	6.1	6.1
Dielectric Strength	39.4 kV/mm	1000 kV/in
Dissipation Factor	0.0070	0.0070

Thermal Properties	Metric	English	Comments
CTE, linear	30.0 µm/m-°C	16.7 µin/in-°F	Below Tg
	100 µm/m-°C	55.6 µin/in-°F	Above Tg
Thermal Conductivity	1.00 W/m-K @Temperature 121 °C	6.94 BTU-in/hr-ft²-°F @Temperature 250 °F
Maximum Service Temperature, Air	150 °C	302 °F
Minimum Service Temperature, Air	-60.0 °C	-76.0 °F
Glass Transition Temp, Tg	124 °C	255 °F	Ultimate Tg

Processing Properties	Metric	English	Comments
Cure Time	30.0 min @Temperature 150 °C	0.500 hour @Temperature 302 °F
	120 min @Temperature 125 °C	2.00 hour @Temperature 257 °F

Descriptive Properties
Color	Black
Water Extract Conductivity umhos/cm	290
Weight Loss %	0.67		At 300°C
Working Life, months	2		At 25°C

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PTRAC202 / 71130

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