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Solder Mask

Solder Mask

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Solder Mask

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Chemask® Solder Mask protect PC boards, plated thru-holes, contacts, pins, posts, terminals and gold fingers during wave soldering. They provide short-term high-temperature protection from molten solder to 515ºF/268ºC. All solder masks are nonflammable, non-contaminating and will not leave ionic or corrosive residue. Chemask® Solder Masks are available in convenient squeeze bottles for a precision application or in gallons for automated applications.

Chemask WF can be removed in a batch or inline cleaning system, and will not clog filters or damage ion filter beds. Peelable solder masks are commonly used in no-clean soldering environments or by PCB assemblers that clean with solvents. Peelable masks are commonly used for masking contact areas and over chemically sensitive components in conformal coating processes.

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Sensitive Metal


Chemask Peelable Solder Mask
Fast curing, peelable temporary solder masking agent

Chemask NA – Non-Ammoniated Solder Mask
High temperature, peelable, temporary mask safe for use on sensitive metals

Chemask HV - High Viscosity Peelable Solder Mask
High viscosity, peelable temporary solder masking agent

Chemask LF - Lead-Free Solder Mask
High temperature, peelable temporary mask ideal for lead-free applications

Chemask WF – Water Filterable Solder Mask
The low foaming, water filterable temporary solder masking agent

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.

Articles


Ultimate Guide to Temporary Solder Mask

What is Temporary Solder Mask Temporary solder mask (also called “spot mask”) is used every day in the assembly of electronic circuit boards. Solder mask is engineered to protect thru-holes or “vias” in wave soldering. It has to withstand extreme soldering temperatures and...
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Temporary Solder Mask Case Study: How Chemask Helped an EMS Company Realize an Extra 500k in Revenue

In this post, we’ll cover how a Washington based Electronics Manufacturing Services (EMS) company was able to open up their production capacity for a potential additional revenue of $520,000 per year.  In addition, they were able to save 208 hours a year in labor and $2,070 a year in DI...
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