Solder

Solder, or solder wire, is a fusible metal alloy with a low temperature melting point used to permanently join two metals that have a higher melting point. Soldering is a process commonly used in the electronics industry for PCBs and electronics components, jewellery manufacturing and pipework in plumbing, with the majority of soldering carried out through the use of a soldering iron.

Our range of solder wire contains products from industry leaders like Felder Lottechnik, MBO, Multicore, Weller and RS PRO, with a variety of wire diameters (ranging from 0.23mm to 7mm) and lead content (0% to 70%).

What is solder made of?

The alloys used in solder vary depending on the manufacturer and the intended application, as different applications require different materials.

Soft solder is commercially available at varying concentrations of tin, ranging from 5% to 70%. Higher percentages of tin provide greater tensile strength, with a 60/40 balance being a popular composition.

Lead-free solder is also available, created due to the call to remove or reduce hazardous materials in consumer electronics, which often has a lower melting point than lead-based alloys. Lead-free solder wire may contain copper, zinc, tin, silver, bismuth, antimony and/or traces of other materials depending on its intended use.

What is flux?

In order to prevent the oxidation of the metal alloy and ensure a strong electrical connection and high mechanical strength, soldering wire contains a flux, which can be made of different materials. A flux is a chemical agent that will help to reduce metal oxides (return oxidised metals to their original state) and seal out air from the join, preventing any further oxidation.

There are two main types of flux: acid/active, which contains strong acids and is used in plumbing and metal mending, and rosin/passive, which is used in electronics.

What forms of solder are there?

The majority of solder comes in wire form, with a range of wire diameters available to suit various applications and joints. Solder granules are ideal for soldering machines and tinning crucibles, but these small pellets of solder popular for jewellery making too. Paste solder is ideal for use in printed circuit boards (PCBs) and connecting surface mount electronic components. It is a sticky paste which is applied to a board by printing or painting.


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Nombre de résultats par page
Description Prix Model Number Wire Diameter Percent Lead Product Form Melting Point Percent Silver Percent Tin Flux Type Product Weight Flux Content Percent Percent Copper
N° de stock RS 756-8884
MarqueRS PRO
34,31 €
Each
Unité
SAC305 0.71mm - Wire 217°C 3% 96.5% Rosin Based 250g 2.2% 0.5%
N° de stock RS 488-2244
Référence fabricant40.840.720.1037
42,58 €
Each
Unité
ISO-Core ELR 0.75mm - Wire 217°C 3.8% 95.5% Rosin Based 250g 1% 0.7%
N° de stock RS 436-4926
Référence fabricant442578
MarqueMulticore
45,91 €
Each
Unité
105 0.5mm 0% Wire +217°C 3.8% 95.5% Halogen Free 250g 1.5% 0.7%
N° de stock RS 756-8881
MarqueRS PRO
14,15 €
Each
Unité
NC600 1.27mm 40% Wire 183°C - 60% Rosin Based 250g 2.2% -
N° de stock RS 625-8233
Référence fabricant342806
MarqueMulticore
82,62 €
1 Reel of 500
Bobine(s)
105 0.7mm - Wire +217°C 3.8% 95.5% Activated Rosin Free 500g 1.5% 0.7%
N° de stock RS 756-8904
MarqueRS PRO
14,36 €
Each
Unité
NC600 0.71mm 40% Wire 183°C - 60% Rosin Based 250g 2.2% -
N° de stock RS 185-0042
Référence fabricant291275
MarqueMulticore
23,73 €
1 Reel of 250 Gram(s)
Bobine(s)
362 1.2mm - Wire +227°C - 99.3% Water Wash 250g 3% 0.7%
N° de stock RS 818-3194
MarqueRS PRO
5,15 €
Each
Unité
- - - - - - - - - - -
N° de stock RS 800-7664
MarqueRS PRO
22,92 €
Each
Unité
NC600 SN100E 1.01mm - Wire 228°C - 99.5% Rosin Based 250g 3.3% 0.5%
N° de stock RS 756-8862
MarqueRS PRO
45,03 €
Each
Unité
SN100E NC600 0.81mm - Wire 228°C - 99.5% Rosin Based 500g 3.3% 0.5%
N° de stock RS 800-7677
MarqueRS PRO
23,70 €
Each
Unité
NC600 SN100E 0.81mm - Wire 228°C - 99.5% Rosin Based 250g 3.3% 0.5%
N° de stock RS 488-2238
Référence fabricant40.841.010.1037
16,81 €
Each
Unité
ISO-Core ELR 1mm - Wire 217°C 3.8% 95.5% Rosin Based 100g 1% 0.7%
N° de stock RS 818-3204
MarqueRS PRO
5,82 €
Each
Unité
SN100E 0.8mm - - 227°C 3% 96.5% - 100g 3.3% 0.5%
N° de stock RS 420-3180
Référence fabricant18.841.03037
82,33 €
Each
Unité
ISO-Core RA 1mm - Wire 217°C 3.8% 95.5% Rosin Based 500g 2.5% 0.7%
N° de stock RS 624-6814
Référence fabricant1894101037
8,48 €
Each
Unité
ISO-Core RA 1mm - Wire 227°C - 99.3% Rosin Based 100g 2.5% 0.7%
N° de stock RS 756-8890
MarqueRS PRO
45,45 €
Each
Unité
NC600 1.27mm 40% Wire 183°C - 60% Rosin Based 500g 2.2% -
N° de stock RS 756-8871
MarqueRS PRO
28,18 €
Each
Unité
- 0.4mm 40% Wire 183°C - 60% Colophony Free- ORL0 250g 2% -
N° de stock RS 226-164
Référence fabricant737689
MarqueMulticore
54,79 €
1 Reel of 500 Gram(s)
Bobine(s)
C511 1.2mm - Wire +227°C - 99.3% Activated Rosin 500g 3% 0.7%
N° de stock RS 185-0070
Référence fabricant289807
MarqueMulticore
46,51 €
1 Reel of 500 Gram(s)
Bobine(s)
362 0.7mm - Wire +227°C - 99.3% Activated Rosin 500g 3% 0.7%
N° de stock RS 800-7661
MarqueRS PRO
13,58 €
Each
Unité
NC601 0.71mm 40% Wire 183°C - 60% Colophony Free- ORL0 250g 2 → 4% -