Soldering Paste CYNEL 40 g (model 76835) — flux for soldering and electronics repair

CYNEL soldering paste 40 g (model 76835) is a flux paste formulated for manual soldering and electronics repair. Supplied in a 40‑gram container, this product promotes wetting of solder, improves the quality of solder joints and assists in removing oxides from component leads and printed circuit board pads during hand soldering or rework. It is intended for situations that require a concentrated, easy‑to‑apply flux medium for small repairs, component replacement and wire joining.

Advantages

The flux composition improves solder flow and wetting, which helps create more reliable electrical and mechanical connections between components and PCB pads. Its paste form allows precise local application without excessive spreading, reducing the need for additional soldering flux liquids. The 40 g container is convenient for repeated small tasks and workshops, and the product is compatible with common solder alloys used in electronics repair.

Suitable for

• Manual soldering of through‑hole and small SMD components
• Rework and repair of printed circuit boards
• Joining and tinning of wires and connectors
• Hobby electronics and prototype assembly

Key specifications

• Form: paste
• Net weight: 40 g container
• Intended use: flux for soldering and electronics repair
• Application method: direct brush or pick-and-place application to joint area
• Compatibility: suitable for use with common solder alloys in electronics (lead‑free and leaded solders)

How to use

Apply a small amount of the flux paste directly to the solder joint area using a clean applicator, brush or wooden stick. Heat the joint with an appropriate soldering iron tip and temperature for the solder alloy in use until solder wets the surfaces and forms a secure fillet. After soldering and cooling, remove any visible flux residues if required by the maintenance procedure or end‑product cleanliness standard. Follow standard safety precautions: work in a well‑ventilated area and avoid skin contact.

Usage recommendations

For best results, use a clean soldering iron tip and appropriate solder wire. When performing precision work on sensitive components, minimize heat exposure and use temperature‑controlled soldering equipment. Clean flux residues when required by circuit performance or cosmetic standards, using suitable solvents and following manufacturer safety guidance.