RUKO GmbH LOS-HM-38.0mm Rosin Flux Paste 20g

Soldering electronics often fails because of poor wetting and oxidation on copper, brass, or tin-plated surfaces. RUKO GmbH LOS-HM-38.0mm is a rosin-based flux paste that removes oxides and improves solder flow, giving clean, reliable joints without the need for post-solder cleaning.

Who is it for

This flux is made for electronics technicians, electrical engineers, and hobbyists who solder PCBs, wires, and fine mechanical parts. It works well for general soldering tasks where a non-corrosive, no-clean residue is acceptable.

Main features

• Rosin (colophony) base with non-activated flux classification 1.1.2.C per DIN EN 29454-1
• Leaves a hard, transparent, non-corrosive and non-conductive residue
• Excellent surface tension reduction and good wetting on copper, brass, and tin-plated surfaces
• Low halide content, suitable for no-clean soldering processes
• Supplied in a 38 mm diameter tin can with 20 g net weight

Specifications

• Flux type: Paste
• Flux base: Rosin (Colophony)
• Flux classification: 1.1.2.C (DIN EN 29454-1), F-SW 32
• Activity level: Non-activated
• Compatible materials: Copper, brass, tin-plated surfaces
• Residue properties: Non-corrosive, non-conductive, transparent, hard
• Cleaning requirement: No-clean
• Container: Tin can, 38 mm diameter
• Net weight: 20 g
• Color: Yellowish, transparent
• Odor: Characteristic rosin odor
• RoHS compliance: Yes
• Shelf life: 24 months
• Storage conditions: Dry, 5-30 °C

Tips

Apply a thin layer of flux to the joint area before soldering. Store the tin tightly closed in a dry place between 5 and 30 °C to maintain activity. The no-clean residue can be left on the board, but if aesthetics require, it can be removed with a suitable solvent.