RELIFE RL-440 Rosin Core Solder Wire 0.3mm 20g
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Prices updated: 13 Oct 2026
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About this product
A fine 0.3 mm active rosin core solder wire on a spool of approximately 20 g, designed for electronics repair, mobile phone maintenance and precision soldering on circuit boards. It flows well, leaves bright joints and produces less residue when used correctly.
Specifications
- Wire diameter
- 0.3 mm
- Net weight
- approx. 20 g
- Flux type
- Active rosin core
- Alloy ratio (as listed)
- 20/80
Frequently asked questions
What is this solder wire best for?
It is best for fine-pitch and SMD work, mobile phone boards and small joints. For thicker wires or power connections, a larger solder diameter is more practical.
Do I need to add extra flux?
The wire already contains active rosin flux in its core. Extra flux can help with difficult joints or rework, but it is not required for normal use.
