Skip to main content

SMD Solder Paste

In our PCB online calculator you can directly order high quality solder paste for reflow soldering of SMD components, as well as high quality SMD-Stencils made of stainless steel and SMD-Stencil-Printers in different price ranges.

For stencil printing you can obtain lead-free, temperature-stable, No Clean solder paste (SAC305) with a very good lifetime from Felder and Loctite in containers of 100g and 500g in grain size T4 (suitable for Finepitch) from Multi-CB.

Receive everything in one package and assemble immediately with fresh solder paste.

Calculate & Order your SMD solder paste now

Solder paste - available types

SMD solder paste ISO-Cream "Active-Clear" T4 100g

Universal solder paste, storable at room temperature

The FELDER ISO-Cream® "Active-Clear" differs from the basic version ISO-Cream® "Clear" in the degree of activation. The ISO-Cream® "Active-Clear" has a REL1 flux classification and therefore has a low halogen content (<0.15 %) but is still a genuine NoClean paste. In addition to the properties of the basic version ISO-Cream "Clear", special attention was paid in this further development to an optimized spread, especially on "problematic" surfaces such as chem. Gold (ENIG) or chem. Silver.

ISO-Cream®"Active-Clear" offers the user the possibility to also work with a moderate print image or with more oxidized surfaces of PCB and components and still achieve excellent soldering results. The soldering paste is also low in odor and forms almost colorless flux residues, which spread only to a very limited extent. This is particularly interesting for users who have integrated an automatic optical inspection (AOI) into their process.

In addition, ISO-Cream® "Active-Clear" is also free of any thixotropic agents that could reduce viscosity with increasing shear forces. This guarantees a constant viscosity over a long period of use. In laboratory tests the solder paste showed no bridging, no tendency to tombstoning or solder bead formation on bipolar components.


  • Shelf life 12 months at room temperature, no storage in refrigerator necessary.
  • Very good soldering results due to the degree of activation, tolerant towards a moderate print image and towards more strongly oxidized surfaces of PCB and components.
  • Consistent viscosity over a long application period.
  • Among others, it is ideally suited for stencil printing with reflow process.

Technical data

PropertiesISO-Cream "Active-Clear
Composition96.5% tin, 3% silver, 0.5% copper (SAC305)
Grain sizeType 4
Recommended min. edge length of the stencil aperture200µm
Recommended stencil thickness100-150µm
Package size100g
Lead-freeYes, RoHS compliant
Halogen contentvery low, REL1 < 0,15%, for halogen free see Loctite
EN ISO 94541.2.3.2
Metal content88,5%
Shelf life12 months at room temperatur (up to 20°C), for easier storage, see Loctite
TransportWe ship with cooling pack in hot summer and with insulation fleece in freezing winter. In the critical seasons, UPS Express Saver shipping is highly recommended, for easier transport see Loctite