• info@mondragon-assembly.com
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Easy and economical Tabber&Stringer with a production capacity of >60MW/year.


Mondragon Assembly’s Tabber&Stringer is ergonomic, simple, and has a high production capacity.

Thanks to our knowledge and experience in technological processes and solar equipment, our team offers modular designs with advanced functions, low cost and high performance.

The Tabber&Stringer has four main remarkable elements: Cell quality control using artificial vision, advanced control of the IR soldering process, servo-drives and up to 5 bus bar ribbon power systems.



  • Vision control systems to see the quality of the cells so that defective cells can be detected and removed.
  • Control of cell temperature to ensure good soldering.
  • Time control for correct self-diagnostics.
  • Unlimited number of process formulas, where the same model or module can assume different process parameters, depending on the materials used.
  • Flexibility for processing different cell models or sizes with a very short change time. We work with cut cells. Up to 1/6 of 6” cells.

Main features

  • Contactless IR soldering so that no stress is generated in the cell.
  • Flux dispensing onto the bus bar without contact with the cell.
  • Anti-camber systems to improve the ribbon’s alignment.
  • Artificial vision
Cell Parameters
Cell dimension range156 x 156 and cut cells ½
Cell thickness range160 - 300 µm
Cell geometryAll
Number of tabs per cell2 -3-4
Tabs spacing (2 tabs)Tab spacing: 2BB: 78 o 75; 3BB:52;4BB: 39;5BB: 31,2mm
Tab soldering processContinuous
Number of cells (125 x 125 mm) per string15
Number of cells (156 x 156 mm) per string12
Max.string length1960 mm
Distance between cells with string2,5 - 160 mm (longer on request)
Max.number of paralist strings in assembly unit8
Max. module size (L x W)2000 x 1100 mm
Min. module size (L x W)1400×600 mm
Tabbing & Stringing
Cell aligningVision System
Tabbing & stringing processOne step
Flux application methodAutomatic, contactless
Soldering processIR
Cell Transport System
Tabbing & stringingWalking Beam
Max. number of cells per casette (buffer)200 cells (5 cassettes per buffer)
Cell loadingRobot Epson
String unloadingLayup on glass
Performance features
Max. / nominal throughput1800/1750 cells/h
Average cell breakage ratio<0,2 % (with certified cells)
Air&Power supply
Compressed air pressure & flow5 bar 1200 Nl/min
Installed power70 kW (3Ph, 380-420 V, 50-60 Hz)
Power consumption during heatingVariable
Power consumption26 kWh
Weight4200 kg
L x W x H5,9 x 2 x 2,1 m
System Control & Software
HardwareBeckhoff PLC with touch panel
Software allowing remote diagnosisYes
Acquired data compatible with Acess ExcelYes
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