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Solar flux SOLAR FLUX-EO-S-013

Recommended method of application
Soldering of solar modules, tabber and stringer material as well as the connecting of cells

No Clean-Flux especially for the solar industry
Di-carboxylic acid resin complex, halogen-free (WEEE/RoHS compliant)
Type ISO-9454: 1231 (1.1.3.A) // DIN-EN 61190-1-1 (acc. J-STD-004B) (IEC ORL0)

Cat.-No. 6213
Emil Otto SOLAR FLUX-EO-S-013 No Clean-Flux especially for the solar industry

Technical Data

Appearance/smell: colourless, light yellowish, transparent liquid
Solids content: 2.0 wt.-%
Density at 20 °C: 0.793 (+/- 0.003) g/ml
Acid number: 5 – 7 mg KOH/g
Activators: Di-carboxylic acid resin complex, halogen-free
Solvents: short-chain alcohols
Flash point: 12 °C


This flux has been specially developed for solar technology, in particular for soldering solar modules, tabber and stringer material
as well as connecting cells. EO-S-013 is a No Clean-Flux, halogen-free formulated and optimized for use in wave, selective and manual soldering processes. EO-S-013 leaves no sticky residue. The activators are specially designed for the higher temperatures that are required in the
manufacture of solar modules without affecting their effectiveness. The application can be carried out by any usual application method (except foams).
The solids content is 2.0 wt.-%.

Instructions for use:
Sprayfluxing: If possible, try at first a quantity of 30 – 50 ml/min and observe the distribution of the flux. After that, correct the quantity. Air pressure: 18 –20 l/min.
Preheating: (If preheating system is used)
Entering the solder wave, the temperature on the topside of the pasteboards should be 80 – 110 °C, dependent on type of boards, layout etc. In case of using lead-free solders, preheating temperatures of 100 – 140 °C on the topsides are possible.

Safety instructions: Please refer to the current MSDS
This flux is very versatile and OPS-compatible. There are good results for manual, wave and selective soldering as well as for cable assembly / wire tinning. The general rule of applying fluxes applied in principle as low as possible also applies to this product.

Packaging units

Canister: 5 l, 20 l