Chemtronics CW2900 User Manual

Composition

Material Silver Filled Polymer

Silver Particle Size

< 20 microns

Color

Silver Gray

Properties

Conductivity 0.05-0.15 ohms/sq/mil

Max. Temperature 212°F (100°C)

Tack-Free Time @ 25°C 5 minutes

Initial Cure Time @ 25°C 1 hour

Cure Time @ 80°C 15 minutes

Electrical Conductivity Excellent

Tape Adhesion Excellent

Flexibility Excellent

RoHS Compliant

Shelf life 12 months@ 25 oC

CHEMTRONICS

Technical Data Sheet

CircuitWorks Flex Conductive Pen

PRODUCT DESCRIPTION

CircuitWorks
instant highly adherent silver traces on
flexible polymeric substrates used in flex
circuitry. CW2900 is used in prototype,

rework and repair of M ylar
other flexible circuits by linking
components, repairing defective traces, and
making smooth jumpers. The Flex
Conductive Pen traces also have excellent
adherence to Indium Tin Oxide (ITO)
substrates. The silver traces dry in minutes
and have excellent m echanical properties.

 Single component system
 Highly adherent/fle xible polymer
 Fast drying
 Excellent electrical c onductivity



Flex Conductive Pen makes



, Melinex, and

TDS # CW2900

TYPICAL PRODUCT DATA AND
PHYSICAL PROPERTIES

Chemical Resistance Very Good

 Operating tempe rature to 212°F (100°C)

TYPICAL APPLICATIONS



CircuitWorks

Flex Conductive Pen may be

used for electronics applications inc luding:

 Circuit Trace Repair
 Solderless Linking of Components
 EMI Shielding
 Grounding
 Quick Prototype Modifications

COMPATIBILITY
CircuitWorks



Flex Conductive Pen
material has excellent compatibility with
materials used in flexible circuit board
fabrication. As with any chemical system,
compatibility with the substrate must be
determined on a non-critical area prior to
use.

ODP

None

VOC

Yes

HCFC

None

HFC

None

USAGE INSTRUCTIONS

Read MSDS carefully prior to use.
Cleaning: For best adhesion, clean board with

Chemtronics Electro-Wash PX Cleaner Degreaser
in order to remove any surface contamination which
may prevent adequate material contact.

Mixing: Although this system has been formulated
to resist hard-packing, it should be shaken
vigorously for 30 seconds to insure the proper
dispersion of the silver flakes. If pen has been
allowed to sit idle for a long period of time, the
mixing ball may seize in the barrel. T o free the b all
use force to tap the barrel end of the pen until the
ball begins to move inside the pen.

Application: The conductive ink is dispensed
through the CircuitWorks Flex Conductive Pen.
Squeezing the pen body while pressing down on the
surface will allow the material to flow through the
tip, enabling the trace to be drawn. Practice with
the pen before attempting detail work.

Thinning: The conductive ink has been optimized
for the CircuitWorks



Flex Conductive Pen and

thinning is not normally necessary. However, a
small amount of Butyl Acetate may be added with
thorough mixing to make slight adjustments for ease
of application for other dispensing systems.

Clean-up/Removal: The conductive ink may be
cleaned or removed using a strong organic solvent
such as acetone or Chemtronics Electro-Wash
Two-Step (ES125a).

Curing: Dries tack-free in about 5 minutes at room
temperature. Achieves electrical conductivity
within 15 minutes. Full conductivity after 24 hours
at room temperature. Heat cure for 15 minutes at 80
to 90°C for maximum conductivity, durability and
chemical resistance.

TECHNICAL & APPLICATION
ASSISTANCE

Chemtronics provides a technical hotline to answer
your technical and application related questions.
The toll free number is:

1-800-TECH-401.

AVAILABILITY

CW2900 8.5 g (0.3 oz.) pen

ENVIRONMENTAL IMPACT DATA

Ozone depletion potential (ODP) is determined in accordance with the
Montreal Protocol and U.S. Clean Air Act of 1990.
Hydrochlorofluorocarbons (HCFCs) are regulated under the Montreal
Protocol as Class II ozone depleting substances. Volatile Organic Compound
(VOC) information is calculated on a weight basis using the VOC definition
of California Air Resources Boa rd (CARB) Consumer Product Regula tions,
South Coast Air Quality Management District (SCAQMD) Rule 102 and the
Federal definition published in 40 CFR 51.100(s). Hydrofluorocarbons
(HFCs) are not currently regulated.

NOTE:

This information is believed to be accurate. It is
intended for professional end users having the skills
to evaluate and use the data properly.
CHEMTRONICS does not guarantee the accuracy
of the data and assumes no liability in connection
with damages incurred while using it.

Chemtronics, Electro-Wash and CircuitWorks are
registered trademarks of Chemtronics. All rights reserved.
ControlWipes is a trademark of Chemtronics. All rights
reserved. All other trademarks herein are trademarks or
registered trademarks of their respective owners.

CHEMTRONICS
8125 COBB CENTER DRIVE
KENNESAW, GA 30152
1-770-424-4888

REV. F (08/13)

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