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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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庫存編號 818-3194
BrandRS PRO
TWD187.00
單位
- - - - - - - - - - -
RS庫存編號 436-4926
製造零件編號442578
BrandMulticore
TWD1,833.00
單位
105 0.5mm 0% Wire +217°C 3.8% 95.5% Halogen Free 250g 1.5% 0.7%
RS庫存編號 555-235
製造零件編號288322
BrandMulticore
TWD1,811.00
毎卷 (500 克)
Reel(s)
362 0.7mm 40% Wire 183-188°C - 60% Halogen Free 500g 3% -
RS庫存編號 756-8875
BrandRS PRO
TWD1,598.00
單位
SAC305 NC600 0.38mm - Wire 217°C 3% 96.5% Rosin Based 250g 2.2% 0.5%
RS庫存編號 436-4897
製造零件編號287506
BrandMulticore
TWD826.00
單位
X39 1.2mm 40% Wire 183-188°C - 60% Activated Rosin 250g 1% -
RS庫存編號 547-293
製造零件編號SN63 PB 7/10 SANS NETTOYAGE RT15 - 500G
BrandMBO
TWD2,190.00
毎卷 (500 克)
Reel(s)
SN63 PB 0.7mm 37% Wire 183°C - 63% Rosin 500g 1.5% -
RS庫存編號 756-8887
BrandRS PRO
TWD1,150.00
單位
NC600 SN100E 0.38mm - Wire 228°C - 99.5% Rosin Based 250g 3.3% 0.5%
RS庫存編號 788-3717
製造零件編號T0051388399
BrandWeller
TWD1,058.00
毎卷:1 個
Reel(s)
WSW SAC LO 0.3mm - Wire 217°C 3% 96.5% Rosin 100g 3.5% 0.5%
RS庫存編號 800-7649
BrandRS PRO
TWD2,397.00
單位
SAC305 NC600 0.25mm - Wire 217°C 3% 96.5% Rosin Based 250g 2.2% 0.5%
RS庫存編號 800-7636
BrandRS PRO
TWD2,113.00
單位
NC600 SN100E 0.25mm - Wire 228°C - 99.5% Rosin Based 250g 3.3% 0.5%
RS庫存編號 420-3180
製造零件編號18.841.03037
TWD2,574.00
單位
ISO-Core RA 1mm - Wire 217°C 3.8% 95.5% Rosin Based 500g 2.5% 0.7%
RS庫存編號 273-255
製造零件編號YC00220
TWD116.00
單位
YC00220 0.8mm 0% Wire 227°C - 99.25% Rosin Based 13g 2.5% 0.75%
RS庫存編號 547-366
製造零件編號300AG 8/10 CR2 - 500G
BrandMBO
TWD1,719.00
毎卷 (500 克)
Reel(s)
300AG 0.8mm 93.5% Wire 296°C 1.5% 5% Rosin 500g 2.2% -
RS庫存編號 484-9893
製造零件編號288718
BrandMulticore
TWD1,294.00
毎卷:1 個
Reel(s)
C511 0.7mm 40% Wire 183-188°C - 60% Halogen Free 500g 3% -
RS庫存編號 554-951
製造零件編號291467
BrandMulticore
TWD1,506.00
毎卷 (500 克)
Reel(s)
362 0.7mm 48.5% Wire 183-215°C - 50% Activated Rosin 500g 3% 1.5%
RS庫存編號 185-0137
製造零件編號291293
BrandMulticore
TWD1,501.00
單位
Hydro-x 1.2mm 40% Wire 183-188°C - 60% Aluminium Solder 500g 2% -
RS庫存編號 229-4308
製造零件編號288716
BrandMulticore
TWD985.00
毎卷:1 個
Reel(s)
C511 0.7mm 40% Wire 183-188°C - 60% Water Wash 250g 3% -
RS庫存編號 818-3204
BrandRS PRO
TWD210.00
單位
SN100E 0.8mm - - 227°C 3% 96.5% - 100g 3.3% 0.5%
RS庫存編號 555-193
製造零件編號CRÈME SN96.5 AG3 CU0.5 SIRIUS 1 LF - SERINGUE MANU
BrandMBO
TWD731.00
單位
SIRIUS 1 LF - - Paste 217°C 3% 96.5% Rosin 30g 14% 0.5%
RS庫存編號 756-8884
BrandRS PRO
TWD1,281.00
單位
SAC305 0.71mm - Wire 217°C 3% 96.5% Rosin Based 250g 2.2% 0.5%