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Ultrasonic soldering iron Sunbonder USM-540


Sunbonder is your best choice for flux free, high quality ultrasonic soldering.
In the past, flux and heating were the typical methods to be used for soldering, but Sunbonder introduces a new type of soldering, based on heat and ultrasonic vibrations. The induced cavitation effect replaces need of flux usage as well as the cleaning process, since there's no exhaust fumes and pollution.
By combining this device with Cerasolzer, the customer can solder on almost of all the materials, for example glass, ceramics, aluminum, molybdenum etc., except for organic substances.

Please feel free to ask us for more details.


USM-540 is equipped with a dia10.0mm tip, enabling the user to work on larger areas.
We recommend this model for customers who wish to use a soldering tip bigger than that of USM-560 (dia4.0mm).

  • New feed-back method developed from careful research of oscillator frequency settings enables stable, reliable work.
  • Thanks to automatic frequency adjusting, changes in power load occurring during soldering do not affect the overall reliability of the bonded solder.
  • Frequency, power output and temperature can be read from a display and easily replicated when necessary.
  • By careful observation of the tip temperature, it is possible to increase it drastically if need be, or to monitor the soldering conditions throughout the process.
  • Standarized temperature and oscillation output power. Temperature and oscillation can be controlled via LAN network, or analog voltage meter.
  • Small, compact design enables easy changes of work station.
  • Suitable for use abroad, with AC ranging from 100V to 240V.
  • CE mark compatible.

USM-540 is the next generation of SO-6. (The older model has already been decommissioned, although we still supply spare parts and continue maintenance support.)
We also sell individual parts.


  • For soldering on sputtering target materials etc.

Image: Comparison of soldering tips for all USM-5 series models

USM-560 USM-540 USM-528

Contents of the set

  • USM-540 Generator unit - 1 pcs
  • Soldering iron (with transducer) for USM-540 - 1 pcs
  • Foot switch for USM-540 - 1 pcs
  • Power supply cable for USM-540 - 1 pcs
  • Wrench (for exchanging soldering tips) - 2 pcs
  • Soldering tip cleaner - 1 pcs
  • Fuse - 1 pcs
  • User manual

Lead time / Before ordering

Lead time

Please ask about lead time when placing your order.

Order specification

To become eligible for our customer service / quality protection scheme, please provide us with the following information upon placing your order:
End customer name/address; desired frequency settings; desired plug details.


Generator unit

Ultrasonic frequency Automatically adjusted frequency; typically 40KHz±5KHz
Oscillator adjustment 1~12W, by 0.1W unit
Chip temperature control Controlled by micro-controller, max 600℃
Temperature adjustment 200~600℃, by 10℃ unit
Power supply AC100V/240V ±5% 50/60Hz 200VA (under maximum stress load)
Size 210×235×90(cm)
Weight About 5 kg

Soldering iron

Transducer Bolt tightening Langevin type 40kHz
Iron base material Special stainless steel
Heater High-performance Sheater 250W
Oscillator cooling method ambient air
Size dia32mm(max)×318mm (without cord)
Weight About 210 g (with cord)

Product catalogue

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