Chemtronics CW2900 Data Sheet

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 substr ates use d in f lex
circuitry. C W2900 is use d in pr ototype,

rework and repair of Mylar
other f lexible c ircuits by linking
components, repairing defective tr aces, and
making sm ooth j umpers. The Flex
Conductive P en traces a lso ha ve e xcellent
adherence to Indium T in O xide ( ITO)
substrates. The silver traces dry in minutes
and have excellent mechanical properties.

 Single component system
 Highly adherent/flexible polymer
 Fast drying
 Excellent electrical conductivity



Flex C onductive Pen makes



, Melinex, and

TDS # CW2900

TYPICAL PRODUCT DATA AND
PHYSICAL PROPERTIES

Chemical Resistance Very Good

 Operating temperature to 212°F (100°C)

TYPICAL APPLICATIONS



CircuitWorks

Flex Conductive Pen may be

used for electronics applications including:

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

COMPATIBILITY
CircuitWorks



Flex C onductive P en
material has e xcellent c ompatibility w ith
materials use d in flexible c ircuit board
fabrication. A s w ith a ny chemical system,
compatibility w ith the substr ate m ust be
determined on a non-critical a rea pr ior to
use.

ODP

None

VOC

Yes

HCFC

None

HFC

None

USAGE INSTRUCTIONS

Read MSDS carefully prior to use.

Cleaning: For best adhesion, c lean boa rd w ith

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 r esist h ard-packing, it s hould be s haken
vigorously f or 30 s econds t o i nsure t he proper
dispersion of the s ilver f lakes. I f pe n ha s be en
allowed to s it i dle f or a l ong pe riod of t ime, t he
mixing ball may seize in the barrel. To free the ball
use force to tap t he ba rrel e nd of t he pe n unt il the
ball begins to move inside the pen.

Application: T he c onductive i nk i s di spensed
through the C ircuitWorks Flex Conductive Pen.
Squeezing the pen body while pressing down on the
surface w ill allow the ma terial to flow through the
tip, en abling t he t race t o b e d rawn. Practice with
the pen before attempting detail work.

Thinning: The conductive ink has been optimized
for t he C ircuitWorks



Flex C onductive P en a nd

thinning i s not nor mally ne cessary. H owever, a
small amount of B utyl Acetate ma y b e a dded w ith
thorough mixing to make slight adjustments for ease
of application for other dispensing systems.

Clean-up/Removal: The c onductive i nk m ay be
cleaned or r emoved using a strong organic s olvent
such as acet one o r C hemtronics Electro-Wash
Two-Step (ES125a).

Curing: Dries tack-free in about 5 minutes at room
temperature. Achieves el ectrical co nductivity
within 15 minutes. Full conductivity after 24 hours
at room temperature. Heat cure for 15 minutes at 80
to 90 °C f or m aximum c onductivity, dur ability a nd
chemical resistance.

TECHNICAL & APPLICATION
ASSISTANCE

Chemtronics provides a technical hotline to answer
your t echnical a nd a pplication 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 d etermined i n a ccordance w ith th e
Montreal Protocol an d U .S. C lean A ir A ct o f 1 990.
Hydrochlorofluorocarbons (HCFCs) a re r egulated u nder t he M ontreal
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 B oard (C ARB) C onsumer Product Regulations,
South Coast Air Quality Management District (SCAQMD) Rule 102 and the
Federal definition published i n 4 0 C FR 5 1.100(s). H ydrofluorocarbons
(HFCs) are not currently regulated.

NOTE:

This information is believed to be a ccurate. I t i s
intended for professional end users having the skills
to evaluate and use t he da ta pr operly.
CHEMTRONICS does n ot g uarantee t he accu racy
of t he da ta a nd a ssumes no l iability i n connection
with damages incurred while using it.

Chemtronics, E lectro-Wash and C ircuitWorks are
registered t rademarks o f Chemtronics. A ll r ights r eserved.
ControlWipes is a t rademark o f Chemtronics. A ll r ights
reserved. All o ther t rademarks h erein ar e t rademarks o r
registered trademarks of their respective owners.

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