Chemtronics Chemask® WF – Water Filterable CWF8 - Manual

PRODUCT DESCRIPTION
Chemask

WF Solder Masking Agent is a
high temperature temporary spot mask that
protects component-free areas from molten
solder during wave soldering. It is water
soluble, designed to be removed with open
and closed loop aqueous cleaning systems.
Chemask

WF is low foaming and has no
effect on deionized water (DI) system resin
beds. This water soluble formulation is
stable to rosin, organic and inorganic fluxes.
 Protects boards from molten solder to
515
°F (268°C)
 Waste stream filterable with micron bags
 Prolongs deionized water system life
 Low foaming
 Compatible with most flux types
 Leaves no corrosive residue
 Does not contain Methanol
 Non-contaminating
 Patent No. 6,207,265
TYPICAL APPLICATIONS
During wave soldering, Chemask

WF
Solder Masking Agent protects:
 Component Free Areas
 Gold Connectors
 Gold Fingers
 Pin Connectors
TYPICAL PRODUCT DATA AND
PHYSICAL PROPERTIES
Base Material Synthetic Resin
Color White
Flux Compatibility All types
Temperature Stability 515
°F (268°C)
Tack-Free Drying Time
(10 mils @ 77
°F)
30 min.
Cure Time
(10 mils @ 77
°F)
1 hour
Viscosity (@ 77
°F)
20,000 cps to
28,000 cps
Viscosity Adjusted With Dionized water
Solids Content ~ 40%
Flash Point None
Weight/Gallon 8.8 lbs.
Shelflife 1 year
COMPATIBILITY
Chemask

WF Solder Masking Agent is
generally compatible with most materials
used in printed circuit board fabrication. As
with any solder masking agent,
compatibility with substrate must be
determined on a non-critical area prior to
use.
TDS # CWF8
CHEMTRONICS
Technical Data Sheet
Chemask

WF Solder Masking Agent