ABLESTIK A316-43

Harmonization Code : 3506.91.90.99 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg ; Adhesives based on polymers of headings 3901 to 3913 or on rubber; Other ; Other

ABLESTIK A316-43

Main features

  • 25,000 cP Viscosity
  • 1-Minute 180 deg C Cure
  • 15.3 kV/mm Dielectric Strength

Product Description

LOCTITE ABLESTIK A 316-43 is a one-component beige heat-cure epoxy paste for electronic encapsulation, potting, and casting. It is also used as an end-cap adhesive for high-temperature filters and for bonding aluminum oxide wafers to metal heat sinks. Typical cured aluminum-to-aluminum tensile lap-shear strength is 17.2 N/mm^2 at 25 deg C, and typical dielectric strength is 15.3 kV/mm. Recommended cure schedules are 20 minutes at 120 deg C, 3 minutes at 160 deg C, or 1 minute at 180 deg C. The adhesive is typically used over an operating-temperature range of -40 to 155 deg C.

Key features

  • Three heat-cure options: Cure schedules are 20 minutes at 120 deg C, 3 minutes at 160 deg C, or 1 minute at 180 deg C.
  • Electrical insulation: Typical cured volume resistivity is 1 x 10^14 ohm cm at 25 deg C and dielectric strength is 15.3 kV/mm.
  • Temperature-dependent hardness: Typical Shore D hardness is 88 at 25 deg C and 70 at 120 deg C.

Applications

Electronic encapsulation, potting and casting; high-temperature filter end-cap bonding; and aluminum oxide wafer bonding to metal heat sinks.

Product Family

ABLESTIK A316-43

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TDS, SDS & Technical Documents

Technical Specifications

General Properties
Appearance
Appearance at room temperature.
Beige paste
Density (g)
1.55 g/cm3
Thermal Properties
Operating Temperature
-40 to 155 °C
Physical Properties
Viscosity
Viscosity is a measurement of a fluid’s resistance to flow. Viscosity is commonly measured in centiPoise (cP). One cP is defined as the viscosity of water and all other viscosities are derived from this base. MPa is another common unit with a 1:1 conversion to cP. A product like honey would have a much higher viscosity -around 10,000 cPs- compared to water. As a result, honey would flow much slower out of a tipped glass than water would. The viscosity of a material can be decreased with an increase in temperature in order to better suit an application
25,000 mPa.s
Electrical Properties
Dielectric Strength
Dielectric strength is measured in kV per mm and is calculated by the Breakdown voltage divided by the thickness of the tested material. Those two properties go hand in hand and while Breakdown voltage is always thickness dependent, dielectric strength is a general material property. As an example, the dielectric strength of Polyimide is 236 kV/mm. If we place 1mm of Polyimide between two electrodes, it will act as an insulator until the voltage between the electrodes reaches 236 kV. At this point it will start acting as a good conductor, causing sparks, potential punctures and current flow.
15.3 kV/mm
Volume Resistivity
Volume resistivity, also called volume resistance, bulk resistance or bulk resistivity is a thickness dependent measurement of the resistivity of a material perpendicular to the plane of the surface.
1×10¹⁴ Ohms⋅cm

Additional Information

Technical properties

As supplied

PropertyValueUnitMethod / condition
AppearanceBeige pasteAs supplied
Viscosity25,000cPSpindle 6; 10 rpm
Density1.55g/cm^3As supplied
Shelf life120days25 deg C
Technical properties

Cured material

PropertyValueUnitMethod / condition
Hardness at 25 deg C88Shore DTypical cured material
Hardness at 120 deg C70Shore DTypical cured material
Volume resistivity1 x 10^14ohm cm25 deg C
Dielectric strength15.3kV/mmTypical cured material
Lap shear strength17.2N/mm^2Aluminum to aluminum; 25 deg C

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