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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Viewing 81 - 100 of 188 products
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Description Price Model Number Wire Diameter Percent Lead Product Form Melting Point Percent Silver Percent Tin Flux Type Product Weight Flux Content Percent Percent Copper
RS Stock No. 104-7325
Mfr. Part No.18.721.02037
PHP2,066.40
Each
units
ISO-Core RA 1mm 36% Wire 179°C 2% 62% Rosin Based 250g 2.5% -
RS Stock No. 788-3717
Mfr. Part No.T0051388399
BrandWeller
PHP2,244.27
1 Reel of 1
Reel(s)
WSW SAC LO 0.3mm - Wire 217°C 3% 96.5% Rosin 100g 3.5% 0.5%
RS Stock No. 179-6668
BrandRS PRO
PHP2,510.78
Each
units
RA300 0.5mm 40% Wire 183°C - 60% Rosin 500g 2.2% -
RS Stock No. 547-253
Mfr. Part No.SN60 PB 12/10 - 3 CANAUX A11 - 500G
BrandMBO
PHP2,258.62
1 Reel of 500 Gram(s)
Reel(s)
SN60 PB 1.2mm 40% Wire 183°C - 60% Rosin 500g 2% -
RS Stock No. 547-297
Mfr. Part No.SN63 PB 10/10 SANS NETTOYAGE RT15 - 500G
BrandMBO
PHP3,205.17
1 Reel of 500 Gram(s)
Reel(s)
SN63 PB 1mm 37% Wire 183°C - 63% Rosin 500g 1.5% -
RS Stock No. 179-6672
BrandRS PRO
PHP1,821.78
Each
units
RA300 1.2mm 40% Wire 183°C - 60% Rosin 500g 2.2% -
RS Stock No. 547-300
Mfr. Part No.SN63 PB 0,35/10 SANS NETTOYAGE RT15 - 100G
BrandMBO
PHP3,807.68
1 Reel of 100 Gram(s)
Reel(s)
SN63 PB 0.35mm 37% Wire 183°C - 63% Rosin 100g 1.5% -
RS Stock No. 179-6687
BrandRS PRO
PHP959.92
Each
units
WS700 1.2mm 40% Wire 183°C - 60% Water Soluble 250g 3.3% -
RS Stock No. 104-7195
Mfr. Part No.18.601.03037
PHP1,989.61
Each
units
ISO-Core RA 1mm 40% Wire 183°C - 60% Rosin Based 500g 2.5% -
RS Stock No. 229-4279
Mfr. Part No.291319
BrandMulticore
PHP3,243.65
1 Reel of 1
Reel(s)
C400 0.7mm 40% Wire 183-188°C - 60% Activated Rosin 500g 2.2% -
RS Stock No. 201-3546
Mfr. Part No.51760720 37
PHP2,526.74
Each
units
ISO-Core Clear 0.75mm - Wire 217° C 3.0% 96.5% - 250g 3.5% 0.5%
RS Stock No. 179-6658
BrandRS PRO
PHP1,018.35
Each
units
RMA200 0.7mm 40% Wire 183°C - 60% Rosin 250g 2.2% -
RS Stock No. 756-8865
BrandRS PRO
PHP2,760.98
Each
units
SN100E NC600 1.27mm - Wire 228°C - 99.5% Rosin Based 500g 3.3% 0.5%
RS Stock No. 104-7476
Mfr. Part No.20.601.03037
PHP1,800.17
Each
units
ISO-Core EL 1mm 40% Wire 183°C - 60% Rosin Based 500g 3.5% -
RS Stock No. 788-3720
Mfr. Part No.T0051388899
BrandWeller
PHP3,951.36
1 Reel of 1
Reel(s)
WSW SAC LO 1mm - Wire 217°C 3% 96.5% Rosin 100g 3.5% 0.5%
RS Stock No. 555-298
Mfr. Part No.SN96.5 AG3 CU0.5 7/10 RT15 - 500G
BrandMBO
PHP6,290.83
1 Reel of 500 Gram(s)
Reel(s)
RT15 0.7mm - Wire 217°C 3% 96.5% Rosin 500g 1.5% 0.5%
RS Stock No. 104-7268
Mfr. Part No.18.602.02037
PHP1,012.60
Each
units
ISO-Core RA 2mm 40% Wire 183°C - 60% Rosin Based 250g 2.5% -
RS Stock No. 179-6666
BrandRS PRO
PHP1,226.58
Each
units
RA300 0.5mm 40% Wire 183°C - 60% Rosin 250g 2.2% -
RS Stock No. 104-7527
Mfr. Part No.20.601.54037
PHP3,291.44
Each
units
ISO-Core EL 1.5mm 40% Wire 183°C - 60% Rosin Based 1000g 3.5% -
RS Stock No. 800-7652
BrandRS PRO
PHP1,109.32
Each
units
NC601 1.27mm 40% Wire 183°C - 60% Colophony Free- ORL0 250g 2 → 4% -