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.


...
Read more Read less

Filters

Viewing 1 - 20 of 157 products
Results per page
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. 436-4926
Mfr. Part No.442578
BrandMulticore
TWD1,805.00
Each
units
105 0.5mm 0% Wire +217°C 3.8% 95.5% Halogen Free 250g 1.5% 0.7%
RS Stock No. 555-235
Mfr. Part No.288322
BrandMulticore
TWD1,722.00
1 Reel of 500 Gram(s)
Reel(s)
362 0.7mm 40% Wire 183-188°C - 60% Halogen Free 500g 3% -
RS Stock No. 756-8875
BrandRS PRO
TWD1,450.00
Each
units
SAC305 NC600 0.38mm - Wire 217°C 3% 96.5% Rosin Based 250g 2.2% 0.5%
RS Stock No. 436-4897
Mfr. Part No.287506
BrandMulticore
TWD825.00
Each
units
X39 1.2mm 40% Wire 183-188°C - 60% Activated Rosin 250g 1% -
RS Stock No. 185-0137
Mfr. Part No.291293
BrandMulticore
TWD1,498.00
Each
units
Hydro-x 1.2mm 40% Wire 183-188°C - 60% Aluminium Solder 500g 2% -
RS Stock No. 484-9893
Mfr. Part No.288718
BrandMulticore
TWD1,294.00
1 Reel of 1
Reel(s)
C511 0.7mm 40% Wire 183-188°C - 60% Halogen Free 500g 3% -
RS Stock No. 547-366
Mfr. Part No.300AG 8/10 CR2 - 500G
BrandMBO
TWD1,655.00
1 Reel of 500 Gram(s)
Reel(s)
300AG 0.8mm 93.5% Wire 296°C 1.5% 5% Rosin 500g 2.2% -
RS Stock No. 547-293
Mfr. Part No.SN63 PB 7/10 SANS NETTOYAGE RT15 - 500G
BrandMBO
TWD1,427.00
1 Reel of 500 Gram(s)
Reel(s)
SN63 PB 0.7mm 37% Wire 183°C - 63% Rosin 500g 1.5% -
RS Stock No. 818-3204
BrandRS PRO
TWD207.00
Each
units
- 0.8mm - - 227°C 3% 96.5% - 100g 3.3% 0.5%
RS Stock No. 554-951
Mfr. Part No.291467
BrandMulticore
TWD1,503.00
1 Reel of 500 Gram(s)
Reel(s)
362 0.7mm 48.5% Wire 183-215°C - 50% Activated Rosin 500g 3% 1.5%
RS Stock No. 555-222
Mfr. Part No.GRENAILLE SN99 AG0.3 CU0.7 - POT 500G
BrandMBO
TWD1,875.00
Each
units
- - - Granules 217°C 0.3% 99% - 500g - 0.7%
RS Stock No. 512-5801
Mfr. Part No.761345
BrandMulticore
TWD281.40
Each (In a Pack of 5)
units
- 7mm - Stick 227°C - 99.3% - 400g - 0.7%
RS Stock No. 229-4308
Mfr. Part No.288716
BrandMulticore
TWD983.00
1 Reel of 1
Reel(s)
C511 0.7mm 40% Wire 183-188°C - 60% Water Wash 250g 3% -
RS Stock No. 555-193
Mfr. Part No.CRÈME SN96.5 AG3 CU0.5 SIRIUS 1 LF - SERINGUE MANU
BrandMBO
TWD549.00
Each
units
- - - Paste 217°C 3% 96.5% Rosin 30g 14% 0.5%
RS Stock No. 788-3717
Mfr. Part No.T0051388399
BrandWeller
TWD1,008.00
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. 756-8884
BrandRS PRO
TWD1,261.00
Each
units
SAC305 0.71mm - Wire 217°C 3% 96.5% Rosin Based 250g 3.3% 0.5%
RS Stock No. 756-8887
BrandRS PRO
TWD1,136.00
Each
units
SN100E NC600 0.38mm - Wire 228°C - 99.5% Rosin Based 250g 3.3% 0.5%
RS Stock No. 273-255
Mfr. Part No.YC00220
TWD117.00
Each
units
YC00220 0.8mm 0% Wire 227°C - 99.25% Rosin Based 13g 2.5% 0.75%
RS Stock No. 800-7636
BrandRS PRO
TWD2,089.00
Each
units
SN100E NC600 0.25mm - Wire 228°C - 99.5% Rosin Based 250g 3.3% 0.5%
RS Stock No. 420-3180
Mfr. Part No.18.841.03037
TWD2,186.00
Each
units
ISO-Core RA 1mm - Wire 217°C 3.8% 95.5% Rosin Based 500g 2.5% 0.7%