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Electronics Production Specialist Since 1973


Ultrasonic Soldering

Flux-less Soldering Made Easy

Ultrasonic soldering is mainly used for "flux-less” or “flux free” soldering to nonmetals such as glass, ceramic, and to difficult-to-solder metals such as aluminum and stainless steel. Today, global environmental concerns as represented by RoHS and other regulations are pushing electronic manufacturers to reduce or eliminate the use of flux. Very specialized applications like inside the human body cannot tolerate the use of flux. Halogen is the major ingredient in flux and is toxic.

Ultrasonic Soldering is available in manual soldering and robotic soldering systems and is designed to apply high-frequency vibrational energy to a molten filler metal to solder parts without flux. Ultrasonic soldering also creates strong attachments through mechanical and chemical bonds. The vibrational energy forces the liquid solder into tiny crevices and pores in the substrates which helps to seal the parts and greatly increase the surface area to which the solder can bond. Chemical bonding uses a special solder which usually has trace amounts of aluminum, beryllium, indium, silicon, silver, titanium, zinc and rare earth elements. These have a strong affinity with oxygen and tend to form oxides that chemically bind to glass, ceramics and metals. This solder is available from Fancort in leaded or lead free composition.

Ultrasonic controller

Ultrasonic soldering head

Exclusive soldering iron tips

Reference Videos

Ultrasonic soldering to glass without flux
This video shows soldering to a glass plate using an ultrasonic unit without flux

Ultrasonic soldering to a thin-film solar panel
It shows soldering to a solar panel as the function of electrodes.

Temperature Control
Ultrasonic Oscillation Frequency 60KHz
Cooling Mechanism for Ultrasonic Vibrator  
Built-in Thermocouple for Faster Recovery  
Mounts a High-Output Heater 150W
Digital Controls  
External I/O 5 Input, 7 Output
Heater Setting Range Range 300-450°C
Sleep Setting Range 100-300°C
Heater Alarm Setting Range 5-99°C
Built-in Alarms for Heater Wire and Sensor Wire Breaking  
Controller Weighs 7.3kg
Wide Assortment of Tips Available  
Air Control
Air Pressure Input Range 0.5MPa MAX
Air Flow Rate 20 Liters/Min or more
Air Alarms for Low Pressure or Head Cool  
Supply Voltage
100 V AC +/-10% 50/60 Hz
120V AC +/-10% 50/60 Hz
230V AC +/-10% 50/60 Hz
Power Consumption 170W

For integration into a robotic system, contact Fancort

For more information, contact:

Bruce Clark

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