Welchen Lötdraht-Durchmesser brauche ich?

Orientieren Sie sich bei der Wahl des passenden Produkts am Durchmesser der Lötstelle: Feines SMD-Löten verlangt 0,3 bis 0,5 mm, die meisten Arbeiten an Leiterplatten gelingen mit 0,5 bis 0,8 mm. Für größere Lötstellen nehmen Sie 1,0 bis 1,6 mm.

Was bedeutet „halogenfrei" bei Lötzinn?

Das Flussmittel vom Typ L0 enthält keine Halogene und hinterlässt weniger aggressive Rückstände auf der Lötstelle. In Branchen mit strengen Reinheitsanforderungen, etwa Automotive und Medizintechnik, ist halogenfreies Lötzinn vorgeschrieben. Für die meisten anderen Anwendungen, wie der Elektronik, reicht der Standardtyp M1.

Was bringt ein durchgehender Flussmittelkern?

Jeder Zentimeter Lötdraht enthält die gleiche Menge Flussmittel. Ohne Hohlstellen oder Unterbrechungen bleibt die Lötstellenqualität konstant. Dadurch ist weniger Nacharbeit notwendig und der Ausschuss wird reduziert.

Wofür brauche ich eine Entlötlitze?

Mit der Entlötlitze entfernen Sie überschüssiges Lötzinn oder korrigieren fehlerhafte Lötstellen. Das feine Kupfergeflecht saugt geschmolzenes Lot per Kapillarwirkung auf. Je breiter die Litze, desto mehr Lot nimmt sie auf. In unserem Sortiment finden Sie verschiedene Breiten, passend für unterschiedliche Lötstellengrößen.

Soldering Wire

WSW Solder Wire for Reliable Solder Joints

Whether a solder joint holds reliably or needs rework often comes down to the solder wire itself. Weller's WSW solder wire features a 100% continuous flux core, with no voids and no air pockets. Our range includes products in three lead-free alloys with diameters from 0.2 to 1.6 mm. Alongside WSW solder wire in various alloys and diameters, we also offer desoldering braid and solder wire dispensers. Explore our range of professional solder wire for every application.

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Continuous Flux Core: The Difference from Conventional Solder Wire

With conventional solder wire, gaps in the flux core are a common issue. Anyone who solders professionally knows what that means: uneven wetting and solder joints that need reworking. With WSW solder wire, this isn't a concern. The flux is distributed evenly across the entire length of the wire because the core runs through without interruption. The result is homogeneous, crack-free solder joints, even on surfaces that are difficult to wet.

WSW solder wire is made from particularly high-quality materials, reducing tip consumption by up to 70%. That means fewer tip changes and less downtime in production.

Choosing the Right Solder Wire: Alloy and Diameter

The right solder wire depends mainly on the solder joint and the application. As a rule, the smaller the joint, the finer the wire. For SMD work, use 0.3 to 0.5 mm. For standard PCB soldering, 0.5 to 0.8 mm is the right choice. For larger connections, go with 1.0 to 1.6 mm.

Our range offers three lead-free alloys. SAC (tin-silver-copper) is the standard: the silver content improves the mechanical properties of the solder joint, as with the WSW SAC M1 0.8mm and WSW SAC M1 0.5mm. SC (tin-copper) contains no silver and is the cost-effective alternative. SCN (tin-copper-nickel) adds nickel for specialist requirements, as with the WSW SCN M1 SOLDER WIRE 1.0MM.

Several flux types are available: L0, for example, is halogen-free, which is a requirement in the automotive and medical technology sectors. M1 is the standard type. Spool sizes range from 10 g kits through 100 g and 250 g up to 500 g.

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Frequently asked questions

What solder wire diameter do I need?

Choose based on the size of the solder joint. Fine SMD soldering calls for 0.3 to 0.5 mm, most PCB work is best done with 0.5 to 0.8 mm, and for larger solder joints, use 1.0 to 1.6 mm.
What does "halogen-free" mean for solder wire?

L0-type flux contains no halogens and leaves less aggressive residue on the solder joint. In industries with strict cleanliness requirements, such as automotive and medical technology, halogen-free solder wire is mandatory. For most other applications, like general electronics, the standard M1 flux type is sufficient.
What's the advantage of a continuous flux core?

Every centimetre of solder wire contains the same amount of flux. With no voids or gaps, solder joint quality stays consistent. This means less rework and reduced scrap.
What is desoldering braid used for?

Desoldering braid removes excess solder or corrects faulty solder joints. The fine copper braid absorbs molten solder through capillary action. The wider the braid, the more solder it can pick up. Our range includes various widths to suit different joint sizes.

Please choose your location and language

Please choose your location and language

Soldering Wire

WSW Solder Wire for Reliable Solder Joints

Continuous Flux Core: The Difference from Conventional Solder Wire

Choosing the Right Solder Wire: Alloy and Diameter