Name: PERMABOND UV683
Brand: Permabond, LLC
SKU: PERMABOND UV683

Main features

Controlled Doming and Encapsulation
Rapid Tack-Free UV Cure
High-Transmittance Cured Coating

Product Description

Permabond UV683 is a colorless UV-curable acrylate coating and doming compound for smart-card microchips and electronic-component encapsulation. Its 1,000 to 1,600 mPa s viscosity at 25 deg C supports doming application, while cure across 320 to 420 nm produces a tack-free surface. Typical tack-free time ranges from 1 to 15 seconds under the listed lamp conditions. The cured coating provides more than 98% light transmittance, 12 to 14 N/mm^2 tensile strength, more than 50% elongation, and 50 to 65 Shore D hardness for optically clear protective applications.

Key features

Doming-Grade Viscosity: Viscosity is 1,000 to 1,600 mPa s at 25 deg C.
Rapid Tack-Free Cure: Typical tack-free time is 1 to 15 seconds under the listed lamp conditions.
High-Transmittance Coating: The cured coating provides more than 98% light transmittance.

Applications

Applications include coating and doming, smart-card microchip coating, and encapsulation of electronic components.

TDS, SDS & Technical Documents

Technical Specifications

General Properties

Appearance

Colorless

Refractive index

>1.490

Specific Gravity

1.1

Physical Properties

Viscosity

1,000-1,600 mPa.s

Mechanical Properties

Elongation

>50 %

Chemical Properties

Water Absorption

<2 %

Other Properties

Storage Temperature

2 - 7 °C

Thermal Properties

Glass Transition Temperature (Tg)

55 °C

Additional Information

Technical properties

As-supplied / before-processing properties

Fixture time depends on lamp output, distance, and substrate transmission.

Property	Value	Unit	Method / condition
Chemical composition	Acrylate		As supplied
Appearance	Colorless		As supplied
Viscosity	1,000 to 1,600	mPa s	At 25 deg C
Specific gravity	1.1		As supplied
Typical fixture time	1 to 7	seconds	Listed UV lamp conditions
Typical tack-free time	1 to 15	seconds	Listed UV lamp conditions
Cure wavelength	320 to 420	nm	Match lamp output to the photoinitiator

Technical properties

After-processing / final-state properties

Values are typical cured properties for the stated methods and substrates.

Property	Value	Unit	Method / condition
Tensile strength	12 to 14	N/mm^2	ISO 37
Light transmittance	>98	%	Cured coating
Refractive index	>1.490		Cured coating
Elongation at break	>50	%	ISO 37
Hardness	50 to 65	Shore D	ISO 868
Water absorption	<2	%	ISO 62; 2 hours in boiling water
Glass transition temperature	55	deg C	DSC; 20 deg C/min rate