DOWSIL HC-2000

Harmonization Code : 8473.30.80.00 | Parts and accessories (other than covers, carrying cases and the like) suitable for use solely or principally with machines of headings 8470 to 8472 ; Parts and accessories of the machines of heading 8471 ; Other; Other

DOWSIL HC-2000

Main features

  • 18-Minute Tack-Free Time
  • 150 cP Flowable Viscosity
  • 33 kV/mm Dielectric Strength

Product Description

DOWSIL HC 2000 Conformal Coating is a one-part, translucent, flowable silicone coating for electronic assemblies. It cures at room temperature without added solvents and reaches a typical tack-free condition in 18 minutes at 25 deg C. Controlled silicone volatility and a 150 cP viscosity suit spray, brush, flow, and selected automated coating methods. After cure, the material has a typical dielectric strength of 33 kV/mm and volume resistivity of 1.0E17 ohm*cm. The coating is used on rigid and flexible circuit boards, connectors, sensors, sensitive components, relays, and high-tolerance devices.

Key features

  • 18-Minute Tack-Free Time: Typical tack-free time is measured at 25 deg C during room-temperature cure.
  • 150 cP Flowable Viscosity: Typical as-supplied viscosity characterizes the one-part flowable coating before cure.
  • 33 kV/mm Dielectric Strength: Typical cured volume resistivity is 1.0E17 ohm*cm.

Applications

Rigid and flexible circuit boards; connectors; sensors; sensitive components; relays and high-tolerance devices.

Product Family

DOWSIL HC-2000

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TDS, SDS & Technical Documents

Technical Specifications

General Properties
Specific Gravity
Specific gravity (SG) is the ratio of the density of a substance to the density of a reference substance; equivalently, it is the ratio of the mass of a substance to the mass of a reference substance for the same given volume. For liquids, the reference substance is almost always water (1), while for gases, it is air (1.18) at room temperature. Specific gravity is unitless.
1.01
Physical Properties
Tack-Free Time
18 minutes
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
150 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.
33 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.
1.0 E17 Ohms⋅cm

Additional Information

Technical properties

As-supplied / before-processing properties

PropertyValueUnitMethod / condition
Viscosity150cPTypical
Low molecular siloxane content, D4-D1025ppmTypical
Shelf life12monthsAt 25 deg C
Technical properties

After-processing / final-state properties

PropertyValueUnitMethod / condition
Specific gravity1.01-Cured; typical
Dielectric strength33kV/mmJIS K 6249; typical
Volume resistivity1.0E17ohm*cmJIS K 6249; typical
Dielectric constant2.7-1 MHz; JIS K 6249; typical
Dissipation factor0.005-1 MHz; JIS K 6249; typical

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