ALPHA WS362水溶性助焊剂
SERIES
Water Soluble Surface Mount Fluxes
GENERAL DESCRIPTION
ALPHA WS362 series of halide-free, water soluble, organic fluxes is designed for the soldering of surface mount and mixed technology assemblies, where the effective cleaning of residues becomes most critical. The densely-packed assemblies, associated with today's mixed technology boa***, adds a difficulty to cleaning which makes the older technology water soluble fluxes non-optimal for applicati*** requiring high ionic cleanliness.
ALPHA WS362-25 is recommended where maximum flux activity and solids are required, such as the soldering of assemblies with very dense component packing and with multilayer boa*** requiring relatively high preheat temperatures. After soldering, flux residues are highly water soluble
and can be readily removed. This results in assemblies with the highest degree of ionic cleanliness and high surface insulation resistance.
FEATURES & BENEFITS
• Most cleanable water soluble flux. Highest ionic cleanliness and surface insulation resistance.
• Halide-Free. Maximum electrical integrity.
• Good activity with rapid wetting. Defect-free soldering.
USE
ALPHA WS362 flux can be applied by foam, spray or w***e techniques. The recommended topside preheat temperatures are 82-104°C (180-220°F).
Post soldering flux residues should be removed after soldering as soon as possible. Thorough cleaning can be accomplished with 50-75°C (120-
170°F) water. For critical cleanliness requirements, final rinsing with DI water may be required.
HEALTH & SAFETY
Flammable liquid. Keep away from heat, sparks and open flames. Observe standard precauti*** for handling and use, such as well-ventilated areas and ***oidance of prolonged or repeated contact with the skin. ***oid exposure to direct sunlight.
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Physical Properties
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Typical Values
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Appearance
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Clear, pale yellow
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Solids Content
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25
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Specific Gr***ity @ 25°C (77°F)
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0.846 &plu***n; 0.005
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pH of 5% Aqueous Solution
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3.2
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Halide Content (% Chloride)
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None
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Surface Insulation Resistance(1)
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4.0 x 109 ohms
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Flash Point
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17°C (62°F)
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Recommended Alpha Thinner
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425
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