Specialty Materials for Electronic Assembly
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Item # 3-1944 Conformal Coating, Silicone Dow Electronics Conformal Coatings


Silicone Dow® Electronics Conformal Coatings

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1-part, translucent conformal coating or adhesive with added UV indicator; good flowability; fast tack-free time; good flame resistance; MIL-A-46058 approved/recognized




Specifications  · Features  · Potential Uses  · Application Methods  · Cure

Specifications

Type
Solventless RTV Elastomeric Conformal Coatings

Product Form
1-part RTV cure

Color
Translucent

Viscosity
65725 mPa/s

Durometer
29 A

Specific Gravity
1.03

Room Temperature Tack-Free Time
16 min

Room Temperature Cure Time
60 min

Flammability Classification
94 V-0

UL 746E Approval
Yes

Shelf Life from Date of Manufacture
12 months

Dielectric Strength
425 V/mil
17 kV/mm

Dielectric Constant at 100 Hz
2.67

Dielectric Constant at 100 kHz
2.73

Dissipation Factor at 100 Hz
0.0013

Dissipation Factor at 100 kHz
< 0.0002

Volume Resistivity
1.3E+15 O/cm


Features

Flowable; room-temperature cure with optional heat acceleration; cures to soft, low-stress elastomer; UL 94V-0 recognized and Mil Spec approved; IPC-CC-830; UV indicator for inspection; no added solvents


Potential Uses

Designed to provide excellent pin/solder joint coverage and thin section encapsulation. This fast- curing, one-part, self-priming coating cures to a flexible, translucent elastomer.


Application Methods

Applied by brush or flow coating or syringe dispensed for spot protection of pins or other devices.


Cure

Time to cure is dependent on several variables including the method of application, film thickness, temperature and humidity. Tack- free time in the data table gives an indication of typical times until surface is dry enough to handle. Cure time for full cure are indications of time needed to develop full physical properties such as durometer, tensile strength or adhesion. These times, including full cure time, can be significantly improved by introducing mild heat of 60 °C or less.