WonderMASK WA Washable Solder Mask

Sku Number Name Size Units
Per Case
Price
Per Case
Case
Qty
 
2206-G WonderMASK WA - 1 gal 1 gal (3.8L) 1 $163.70
Packaging Order minimum case quantity only. Extra shipping fees may apply.
Order from an authorized distributor
Quick drying water-washable mask. Quickly and easily removed with in-line and batch cleaning systems.
NOTE: Not for use in closed-loop systems with filtration or DI system.

WonderMASK WA has a number of useful applications in PCB assembly:

Thru-hole masking – Prevent soldering open holes in a wave soldering process by covering with WonderMASK. All of the masks listed below are well suited for this application.

Temporary component adhesive – WonderMASK can be used to tack down components on double-sided PCBs.

All Techspray WonderMASK products have the following advantages:

  • Withstands lead-free soldering temperatures up to 640°F (343°C) in wave soldering process
  • RoHS compliant

Features & Benefits

  • Water washable
  • Viscosity optimized for robotic & pneumatic applications
  • Non-corrosive
  • Low odor
  • Nonflammable

Specifications: Meets MIL-STD-2000 paragraph 5.3.18 parts a,b, and d.
Call-outs: HP 8500-4214, Celestica 8500-4214

Applications


FAQ's

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.

What could cause foaming problems during rinse-off of the water-soluble masks?

Particulates + surfactants during rinse = foam. Check filtration system or drain & recharge the rinse water system as necessary. The particulates may come from various sources, but excess solder flux being rinsed off the boards is a prime culprit. Bacteria in the water can cause foaming. Have a water sample analyzed.

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.

Articles

How To Use Spot Mask for Wave Soldering & Conformal Coating
Spot mask, commonly called “temporary solder mask”, can be used to protect open thru-holes or “vias” in wave soldering. Solder does not wet or stick to it, and it withstands soldering temperatures without charring and bubbling. When you are done, the mask is either peeled off or washed off in your P...
Read This Post
You did not finish submitting your information to request a sample