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Solar flux SOLAR FLUX-EO-S-014

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 complex, halogen-free, resin additive (WEEE/RoHS compliant)
Type ISO-9454: 2231 (2.2.3.A) // DIN-EN 61190-1-1 (acc. J-STD-004B) (IEC ORL0)

Cat.-No. 6214
Emil Otto SOLAR FLUX-EO-S-014 No Clean-Flux especially for the solar industry

Technical Data

Appearance/smell: colourless, light yellowish, transparent liquid
Solids content: 2.1 wt.-%
Density at 20 °C: 0.793 (+/- 0.003) g/ml
Acid number: 13 – 16 mg KOH/g
Activators: Di-carboxylic acid complex, halogen-free, with special
resin additive
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-014 is a No Clean-Flux, halogen-free formulated and optimized for use in wave, selective and manual soldering processes. EO-S-014 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 2.1 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