Technical Data Sheet
Silver Conductive Epoxy Adhesive
Description
8330S is an electrically conductive, silver-filled two-part epoxy adhesive with a long working life. It is
smooth, non-sagging, thixotropic, and bonds well to a wide variety of substrates.
It can be used as a solder replacement for bonding heat-sensitive electronic components, or for making
conductive connections where soldering is not an option, such as when bonding to glass, soft metals, or
plastics.
8330S is highly filled to maximize electrical conductivity. For a more economical version, use 8331S. For
a shorter working life and room temperature cure, use 8330.
8330S
Features and Benefits
•
Resistivity of 0.0007
Ω·cm
•
Thermal conductivity of 2.4 W/(m·K)
•
1:1 mix ratio
•
Working life: 4 hours
•
Cure time: 2 hours at 65 °C (149 °F)
•
Good tensile strength
•
High compressive strength
•
Strong resistance to humidity, salt water, mild bases, and aliphatic hydrocarbons
•
Shelf life: 3 years at room temperature
•
RoHS 3 compliant
ISO 9001:2015 Registered Quality System. Burlington, Ontario, Canada SAI Global File: 004008
Date: 09 August 2018 / Ver. 2.08
Page 1
8330S
Usage Parameters
Properties
Working life @22 °C [72 °F]
a)
Shelf life @22 °C [72 °F]
Full cure @22 °C [72 °F]
Full cure @65 °C [149 °F]
Full cure @80 °C [176 °F]
Full cure @100 °C [212 °F]
a)
Working life assumes 5 g at room temperature.
Value
4h
3y
Heat cure only
2h
1h
30 min
Temperature Ranges
Properties
Constant service temperature
Storage temperature
Value
-40 to 150 °C [-40 to 302 °F]
16 to 27 °C [61 to 81 °F]
ISO 9001:2015 Registered Quality System. Burlington, Ontario, Canada SAI Global File: 004008
Date: 09 August 2018 / Ver. 2.08
Page 2
8330S
Cured Properties
Physical Properties
Color
Density @26 °C [79 °F]
Hardness
Tensile strength
Elongation
Young’s modulus
Compressive strength
Lap shear strength (stainless steel 304)
Lap shear strength (aluminum 5052)
Water absorption (relative mass change)
Outgassing (total mass loss)
@125 °C [257 °F] for 24 h
Water vapor regain
Collected volatile condensable materials
Method
Visual
ASTM D 1475
Shore D Durometer
ASTM D 638
ASTM D 638
ASTM D 638
ASTM D 695
ASTM D 1002
ASTM D 1002
ASTM D 570
ASTM E 595
ASTM E 595
ASTM E 595
Value
a)
Silver grey
2.8 g/mL
73D
9.0 N/mm
2
[1 300 lb/in
2
]
7.8%
220 N/mm
2
[32 000 lb/in
2
]
36 N/mm
2
[5 200 lb/in
2
]
1.3 N/mm
2
[190 lb/in
2
]
2.6 N/mm
2
[380 lb/in
2
]
0.32%
0.40%
0.14%
0.03%
Note: Specifications are for epoxy samples cured at 80 °C for 1 hour and conditioned at ambient temperature
and humidity.
a)
N/mm
2
= mPa; lb/in
2
= psi
ISO 9001:2015 Registered Quality System. Burlington, Ontario, Canada SAI Global File: 004008
Date: 09 August 2018 / Ver. 2.08
Page 3
8330S
Cured Properties
Electrical Properties
Volume resistivity
Volume conductivity
Method
Method 5011.5
in MIL-STD-883H
Method 5011.5
in MIL-STD-883H
Value
0.0007
Ω·cm
1 400 S/cm
Thermal Properties
Glass transition temperature (T
g
)
CTE
a)
prior T
g
after T
g
Thermal conductivity @25 °C [77 °F]
@50 °C [122 °F]
@100 °C [212 °F]
Thermal diffusivity @25 °C [77 °F]
Specific heat capacity @25 °C [77 °F]
Method
ASTM E 3418
ASTM E 831
ASTM E 831
ASTM E 1461
ASTM E 1461
ASTM E 1461
ASTM E 1461 92
ASTM E 1461 92
Value
34 °C [93 °F]
97 ppm/°C [206 ppm/°F]
208 ppm/°C [406 ppm/°F]
2.4 W/(m·K)
3.3 W/(m·K)
2.5 W/(m·K)
1.2 mm
2
/s
0.6 J/(g·K)
Note: Specifications are for epoxy samples cured at 80 °C for 1 hour and conditioned at ambient
temperature and humidity.
a)
Coefficient of Thermal Expansion (CTE) units are in ppm/°C = in/in/°C × 10
-6
= unit/unit/°C × 10
-6
ISO 9001:2015 Registered Quality System. Burlington, Ontario, Canada SAI Global File: 004008
Date: 09 August 2018 / Ver. 2.08
Page 4
8330S
Uncured Properties
Physical Properties
Color
Density
Mix ratio by volume
Mix ratio by weight
Solids content (w/w)
Mixture (A:B)
Silver grey
3.4 g/mL
1:1
1.1:1
100%
Physical Properties
Color
Viscosity @25 °C [77 °F]
Density
Odor
Part A
Silver grey
3 000 000 cP [3 000 Pa·s]
a)
3.4 g/mL
Mild
Part B
Silver grey
8 600 000 cP [8 600 Pa·s]
b)
2.9 g/mL
Amine
a)
Brookfield viscometer at 2 rpm with spindle RV S96
b)
Brookfield viscometer at 1 rpm with spindle RV S96
ISO 9001:2015 Registered Quality System. Burlington, Ontario, Canada SAI Global File: 004008
Date: 09 August 2018 / Ver. 2.08
Page 5
