Loettechnik - Platinen in der Lötanlage

Soldering Technology

Plants and systems for void-free soldering with vacuum

Vacuum-soldering for high-quality production

The power density of advanced electronic components like e.g. power modules, hybrid and multichip components, etc. is continuously growing. Therefore, the quality of solder connections must fulfill the increasing demands as well. Gas inclusions (= voids) in the solder connections must be avoided.

The best way to remove such from the liquid solder is the systematic use of vacuum during the soldering process.

The vacuum soldering systems by PINK provide void-free solder connections, e.g. of large power modules, with preform solders and / or pastes in a continuous process.


Areas of application

  • Semiconductor industry
  • Power electronics
  • Automotive industry
  • Optical and electro-optical industry
  • High frequency technology
  • Wafer technology
  • Rail drive technology
  • Solar technology
  • Wind power station technology

Typical soldering profile for lead-free solders

Loetprofil Grafik

Advantages of the VADUs

Short cycle times and high performance by intelligent temperature management

The VADU systems have a short heating and cooling time with controlled gradients and a process temperature of up to 400 °C. In addition, temperature stability is secured during evacuation.

The substrate temperature is continuously monitored and controlled with an intelligent temperature regulation contacting the docking heating and cooling plate. This patented technology provides optimum soldering processes with short cycle times, fast soldering results and high performance.


Environment-friendly and easy to operate due to a smart design

Based on the compact design, the VADU soldering systems require a minimum of space and energy and are both economically and ecologically efficient during a 24/7 operation.

The ergonomic design of the VADU also provides advantages with regard to operation, service and maintenance due to an easy and quick access to the chambers.

Flexible soldering technologies for individual customer demands

PINK offers soldering systems suitable for each production strategy: VADU 100 for laboratory or batch production, VADU 200 for batch operation or VADU 300 and VADU 400 as automated inline systems for series production.

Each vacuum soldering system for preform and/or paste soldering under an inert soldering atmosphere can be equipped according to individual customer requirements with different customized options like e.g. formic acid equipment, transfer systems, handling equipment, etc.

Perfect and reproducible soldering results due to a continuous process control

All systems of the VADU series provide an individual definition as well as control and monitoring of the soldering profiles due to permanent product tracking and process control.

All process data can be tracked at any time due to a permanent parameterization during the soldering process. Therefore, reproducibility of the soldering processes is guaranteed and a constant high product quality is assured.
LunkerVoid quantity after chip soldering without vacuum process.
LunkerfreiVoid quantity after chip soldering with vacuum process.

System features

  • Active Void-reduction
  • Reproducible processes
    with void-instalments < 1 % possible
  • Soldering with preforms
    and / or pastes
  • Flux-free soldering with formic acid
  • Soldering temperatures
    up to 400 °C
  • Individual soldering profiles