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FCT Assembly

FCT, WS159 63/37 Leaded Water Soluble Solder Paste

FCT, WS159 63/37 Leaded Water Soluble Solder Paste

Regular price $73.58 USD
Regular price $82.00 USD Sale price $73.58 USD
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WS159 is a water soluble, leaded solder paste that is classified ORH0. WS159 was formulated to meet the requirements for reliable solder joints in PCB Assemblies along with a large operating window. Thus, WS159 was designed to provide humidity tolerance and excellent wetting. WS159 remains stable in a wide range of temperatures (65-85F) and relative humidity (25-65%RH). While maintaining a stable viscosity and exceptional cosmetics, WS159 exhibits low voiding characteristics. The residue for this product is easily visible and removable with warm water.


Excellent print volume consistency with surface area ratios (SAR) as low as 0.50 when used with the NanoSlic stencil technology
Low-hydroscopic formulation resistant to slump and dry-out.
Wide reflow window with excellent wetting characteristics on all surface finishes
Very stable product for a water soluble paste that allows storage of this paste up to 6 months at room temperature and one year if refrigerated
Low voiding and high reliability composition
Compatible in either nitrogen or air reflow
Formulated for leaded alloys and Types 3,4 and 5 powders

Production Details

Shelf Life: Typically 6-9 months.

Standard Lead Time

In stock items ship within 24 hrs.  Out of stock items typically ship within 2 - 10 working days.

Optional Container Sizes /  Please call for price and availability:

30g Syringe, 100g Syringe, 600g cartridge, 800g Pro-Flo cartridge

 CALIFORNIA PROP 65 WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

Email: / Phone: 206-853-5050


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