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Chemask LF - Lead-Free
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Chemask LF - Lead-Free Solder Mask

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Chemask LF - Lead-Free Solder Mask

Chemask® Lead-Free Solder Masking Agent is a temporary, fast curing, peelable solder masking agent formulated for use in high-temperature lead-free applications. It is a temperature resistant coating that protects component-free areas of the PCB during wave soldering. Chemask® Lead-Free can be introduced into the preheat oven within 4 minutes of application without adverse effects. Use to protect pins, posts, contacts and edge connections during conformal coating processes.

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Features & Benefits

  • Formulated for use with lead-free applications
  • Can also be used with Tin/Lead solders
  • Usable within five minutes of application with preheat cycles
  • Provides short-term high temperature protection up to 550ºF (288ºC)
  • RoHS compliant

Applications

  • Ideal for protecting contacts during lead-free soldering
TDS
MSDS
(ANSI)
SDS (GHS)
Categories
Specifications MIL-STD-2000A, PARA.5.3.18
Shelf Life 2 yrs
Shipping Name Coating Compound Not Regulated

FAQ's

How do I avoid peelable solder mask from breaking off and leaving residue behind?

The follow are factor to consider when trying to avoid breakage: 1) Curing – Partially cured mask will have more of a tendency to break or leave residue. 2) Temperature and duration in extreme heat – Mask is designed for wave soldering, which is about a second of exposure to molten solder temperatures (generally 550°-650°F). If the mask is sent through a reflow oven the duration is much longer, which can lead to more mask brittleness. If the mask is exposed to high-temperature solder (e.g. silver), it can also lead to more brittleness. 3) Application method – When hand applying, we recommend holding the bottle at about a 60° angle, rather than upright at 90°. That tends to apply the material as a thick blanket over the areas to be masked. When the bottle is held at 90°, the mask is generally applied thinner, and is forced through holes and around components. Those thin areas are more likely to become brittle and stay behind, and mask pushed into holes and around components is harder to remove, so more likely to break.

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Part # Size Units Per Case
CLF1

1 gal / 3.7 liter container

1 container
CLF8

8 fl oz./ 236 ml squeeze bottle

24 bottles
Order from an authorized distributor
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