Chemtronics CNA8

Chemask® Non-Ammoniated Solder Mask, 8 oz. Bottle

In Stock

Chemask^® NA Non-Ammoniated Solder Masking Agent is a latex and ammonia free, fast curing, peelable temporary spot mask formulated for safe use on sensitive metals. It contains high-temperature resistant compounds that protect component-free areas during wave soldering. Chemask^® NA may be used to protect pins, posts, contacts and edge connections in the solder reflow oven or during conformal coating processes.

Will not affect gold, copper, nickel, silver and OSP finishes
For lead-free or tin/lead processes
Stable to 550º F (288ºC)
Phthalate-free, low toxicity and environmentally safe
Compatible with rosin, no-clean and water soluble flux types
Dries tack free in 15 minutes
Can be placed directly into pre-heat oven without waiting
Removes easily and leaves no residue
Non-contaminating, non-staining and noncorrosive

Special Price $24.28 Regular Price $25.03

Buy 12 for $24.03
Buy 50 for $23.78
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Technical Documents

Product Info & TDS Sheets

Chemtronics Chemask Product Information

Chemtronics CNA8 Technical Data Sheet

SDS/MSDS Sheets

Chemtronics CNA8 Safety Data Sheet

Details

FAQs

How high of a temperature can temporary solder mask withstand?

Solder mask is engineered to withstand molten solder temperature for the very brief time (about a second) it is exposed in a typical wave soldering process. Most commercially available masks should be able to withstand melting point temperatures of lead-based and lead-free solder, up to 650°F (343°C). As exposure time is lengthened, like in a reflow oven, there is more potential the mask will bubble, char, and become brittle. How long a mask can withstand extreme temperatures depends on the thickness of the bead, and the type of mask.

Can temporary solder mask be left on the PCB permanently?

Temporary solder mask is intended to be just that – temporary. Manufacturers of solder masks, like Chemtronics, always recommend removing the mask because there is no testing to support doing otherwise. If you decide to leave the solder mask on as a permanent part of the PCB, you will have to do your own functional and reliability testing to ensure it does not cause a problem.

Does temporary solder mask leave an ionic residue?

No, temporary solder mask will not leave behind ionic residue that can lead to dendritic grown and board failure.

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