Guyson offer both blast and ultrasonic equipment options for the electronics sector. Kerry ultrasonic cleaning systems for the electronics industry handle applications ranging from low volume defluxing of printed circuit boards, through maintenance cleaning of assembly equipment to high throughput defluxing of PCB's for aerospace or defence sectors. Whilst Guyson blast cabinets can handle localised conformal coating removal during rework of PCB boards and Airwash cabinets for service operations.

PCB Cleaning

Guyson's Kerry ultrasonic solvent cleaning systems for the electronics industry handle applications ranging from low volume defluxing of printed circuit boards, through maintenance cleaning of assembly equipment to high throughput defluxing of PCB's for aerospace or defence sectors.

An often required solution, which can be provided by Guyson's Kerry Microsolve products, is that of removal of 'dendritic growth' from PCB boards, where this dendrite growth (often caused by swings in humidity from hot to cold and back) is affecting impedance so that the performance degrades and can cause intermittent operation or short-circuiting of the PCB.

Cleaning in Microsolve machines can be carried out with dual-frequency ultrasonics or without sonics depending on your process requirements.

Cleaning IGBT Power Modules for Electric Vehicles

Microsolve Co-Solvent systems achieve cleanliness standards to specifications including BS, IPC [Institute for Printed Circuits], ESA [European Space Agency] and MIL-SPEC. The Co-Solvent process defluxes all types of PCBs, assembled and reworked and removes no-clean solder flux residues from insulated-gate bipolar transistor (IGBT) power module packaging for electric vehicles (EV),(photos below - Before (left) After (Right)) and eliminates the white deposits associated with traditional single solvent and water-based detergent processes.

After - removal of no-clean solder flux residues
Before - removal of no-clean solder flux residues







For certain aerospace applications where ultrasonics may not be used, the co-solvent process can clean without sonics, using instead the ‘rolling boil’ agitation together with the properties of the co-solvent mixture itself to achieve the required cleanliness standards.

Selective Conformal Coating Removal

Guyson International has recently introduced a NEW specialised Formula 1400 CCR blast cabinet; for the selective removal of conformal coating from printed circuit boards (PCBs).

This specialist Formula CCR version is based on the well-proven Guyson Formula 1400 blast cabinet but has been specifically adapted for this application with a range of Electro Static Discharge (ESD) reduction features including; an ionising air curtain, ergonomically designed handheld air-assisted ionising gun, extensive earth-grounding straps fitted to all individual items of the entire blast system and finally, an earth grounding spike is used to protect each item to be blast abraded. Optional ultra-violet lighting is also available.

Conformal coating removal is undertaken with the stand-alone pressure fed Pencil Blast unit which is fitted onto an external shelf on the left-hand side of the cabinet. This compact air-powered pressure fed blast system, fitted with hard metal stylus type nozzle (available with 0.8 mm, 1.2 mm or 1.8 mm bore blast nozzle) comes complete with foot pedal control.

Choice of blast media depends on the type of conformal coating and options include Walnut Shells, Sodium Bicarbonate, Plastic and Wheat Starch.; all available to order from Guyson.