HYDRON WS 400 en

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When cleaning PCB assemblies, the primary goal is to remove contaminants from populated boards and hybrid circuits resulting from fluxes and improper handling. The use of engineered PCB cleaning solutions is essential to ensure flux residues are fully removed from the assemblies used in high-reliability applications and industries such as automotive, medical, aerospace, and military.

The targeted use of a cleaning agent substantially improves the integrity of subsequent processes such as bonding and conformal coating. Residues can cause improper adhesion of bonds that can lead to failures such as heel cracks or lift-offs. During the coating process, remaining residues can result in poor wetting and delamination that can cause assembly failures and ultimately lead to field failures.

These reliability risks are increased when using lead-free solder pastes as they contain more resins as well as aggressive activator systems and are soldered at higher temperatures.

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HYDRON WS 400 is a FAST Technology based water cleaning agent specifically designed to remove water soluble (WS) flux residues from electronic assemblies and is compatible with sensitive metals. Applied at low concentrations (3% to 5%), the cleaning agent has been specifically developed to penetrate the capillary spaces underneath low standoff components where DI-water only applications can no longer provide reliable cleanliness levels. Also, it effectively removes RMA and No Clean flux residues at increased concentrations up to 15%.

Advantages compared to other surfactant cleaners:

Fast removal of a wide variety of the latest water soluble (WS) flux residues
Designed for use with WS pastes/fluxes at lower concentrations 3% to 5%
Non-foaming formula that does not promote “white scaling”
Gentle formulation leaves solder joints and pads shiny and bright
Specifically formulated for excellent compatibility with aluminum and epoxy surfaces
Ethanolamine-free
Low odor

Area of Specific Application

Water soluble flux residues

Process

Spray-in-air (inline and batch)
Ultrasonic

Contamination

Flux residues

Technology

FAST Technology

Hydron WS 400 Technical Data Sheet