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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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Temporarily out of stock Weller Wire, 0.5 mm Lead Free Solder, 235 °C Melting Point RS Stock No. 244-1543 Mfr. Part No. T0051388099 Subtotal (1 unit) £84.68(exc. VAT) £84.68/unit Quantity	Weller	-	Lead Free Solder	0.5mm	0%	Wire	235°C	0%	99.3%	L0	500g	-	0.7%	No
Temporarily out of stock Weller Wire, 1.2 mm Lead Free Solder, 228 °C Melting Point RS Stock No. 244-1536 Mfr. Part No. T0051387399 Subtotal (1 unit) £59.98(exc. VAT) £59.98/unit Quantity	Weller	-	Lead Free Solder	1.2mm	0%	Wire	228°C	0%	99.3%	M1	500g	-	0.7%	No
Limited stock MBO Stick Lead Solder, 183 °C Melting Point RS Stock No. 548-230 Mfr. Part No. BAGUETTE SN60 PB40 HT Subtotal (1 unit of 330 units) £61.20(exc. VAT) £61.20/pack Quantity	MBO	-	Lead Solder	-	40%	Stick	183°C	-	60%	-	8.5g	-	0.24%	No
In Stock Weller Wire, 0.8 mm Lead Free Solder, 217 °C Melting Point RS Stock No. 788-3714 Mfr. Part No. T0051388599 Subtotal (1 reel of 1 unit) £58.91(exc. VAT) £58.91/reel Quantity	Weller	-	Lead Free Solder	0.8mm	0%	Wire	217°C	3%	96.5%	Rosin	250g	-	0.5%	No
In Stock Felder Lottechnik Wire, 1 mm Lead Free Solder, 217 °C Melting Point RS Stock No. 488-2452 Mfr. Part No. 40.841.020.1037 Subtotal (1 unit) £159.78(exc. VAT) £159.78/unit Quantity	Felder Lottechnik	-	Lead Free Solder	1mm	0%	Wire	217°C	3.8%	95.5%	Rosin Based	250g	-	0.7%	No
In Stock MBO Wire, 1 mm Lead Solder, 183 °C Melting Point RS Stock No. 547-297 Mfr. Part No. SN63 PB 10/10 SANS NETTOYAGE RT15 - 500G Subtotal (1 reel of 500 units) £68.86(exc. VAT) £68.86/reel Quantity	MBO	-	Lead Solder	1mm	37%	Wire	183°C	-	63%	Rosin	500g	-	-	No
In Stock Weller Wire, 0.5 mm Lead Free Solder, 217 °C Melting Point RS Stock No. 788-3710 Mfr. Part No. T0051388499 Subtotal (1 reel of 1 unit) £30.78(exc. VAT) £30.78/reel Quantity	Weller	-	Lead Free Solder	0.5mm	0%	Wire	217°C	3%	96.5%	L0	100g	-	0.5%	No
In Stock MBO Wire, 0.7 mm Lead Solder, 179 °C Melting Point RS Stock No. 547-372 Mfr. Part No. SN62 PB AG2 7/10 CR2 - 500G Subtotal (1 reel of 500 units) £144.61(exc. VAT) £144.61/reel Quantity	MBO	-	Lead Solder	0.7mm	36%	Wire	179°C	2%	62%	Rosin	500g	-	-	No
In Stock Weller Wire, 1 mm Lead Free Solder, 221 °C Melting Point RS Stock No. 244-1546 Mfr. Part No. T0051402499 Subtotal (1 unit) £27.34(exc. VAT) £27.34/unit Quantity	Weller	-	Lead Free Solder	1mm	0%	Wire	221°C	0%	96.5%	M1	100g	-	0.5%	No
Currently unavailable Felder Lottechnik Wire, 1.5 mm Lead Solder, 183 °C Melting Point RS Stock No. 104-7498 Mfr. Part No. 20.601.51037 Subtotal (1 unit) £14.23(exc. VAT) £14.23/unit Quantity	Felder Lottechnik	-	Lead Solder	1.5mm	40%	Wire	183°C	-	60%	Rosin Based	100g	-	-	ElektroG, RoHS, DE-Patent-No. 19816671C2, DIN EN 29453, DIN EN 61190, US-Patent-No 6.179.935B1, US-Patent No. 5.527.628, Japan-Patent-No. 3296289, DIN EN 29454, ISO 9001:2000
In Stock Weller Wire, 0.8 mm Lead Free Solder, 221 °C Melting Point RS Stock No. 244-1524 Mfr. Part No. T0051386399 Subtotal (1 unit) £113.79(exc. VAT) £113.79/unit Quantity	Weller	-	Lead Free Solder	0.8mm	0%	Wire	221°C	3%	96.5%	M1	500g	-	0.5%	No
In Stock Felder Lottechnik Wire, 1 mm Lead Free Solder, 217 °C Melting Point RS Stock No. 201-3547 Mfr. Part No. 51761020 37 Subtotal (1 unit) £138.24(exc. VAT) £138.24/unit Quantity	Felder Lottechnik	-	Lead Free Solder	1mm	0%	Wire	217°C	3.0%	96.5%	-	250g	-	0.5%	No
In Stock MBO Wire, 0.5 mm Lead Solder, 183 °C Melting Point RS Stock No. 547-326 Mfr. Part No. SN60 PB40 5/10 SANS NETTOYAGE RT15 - 500G Subtotal (1 reel of 500 units) £68.86(exc. VAT) £68.86/reel Quantity	MBO	-	Lead Solder	0.5mm	40%	Wire	183°C	-	60%	Rosin	500g	-	-	No
Currently unavailable Felder Lottechnik Wire, 1 mm Lead Solder, 183 °C Melting Point RS Stock No. 104-7482 Mfr. Part No. 20.601.04037 Subtotal (1 unit) £107.21(exc. VAT) £107.21/unit Quantity	Felder Lottechnik	-	Lead Solder	1mm	40%	Wire	183°C	-	60%	Rosin Based	1000g	-	-	ISO 9001:2000
In Stock Weller Wire, 1 mm Lead Free Solder, 221 °C Melting Point RS Stock No. 244-1523 Mfr. Part No. T0051386299 Subtotal (1 unit) £108.50(exc. VAT) £108.50/unit Quantity	Weller	-	Lead Free Solder	1mm	0%	Wire	221°C	3%	96.5%	M1	500g	-	0.5%	No
In Stock MBO Wire, 1.5 mm Lead Free Solder, 217 °C Melting Point RS Stock No. 555-305 Mfr. Part No. SN96.5 AG3 CU0.5 15/10 RT15 - 100G Subtotal (1 reel of 100 units) £45.90(exc. VAT) £45.90/reel Quantity	MBO	-	Lead Free Solder	1.5mm	0%	Wire	217°C	3%	96.5%	Rosin	100g	-	0.5%	No
In Stock Stannol Wire, 0.5 mm Lead Free Solder, 217 °C Melting Point RS Stock No. 133-5615 Mfr. Part No. 810797 Subtotal (1 unit) £153.43(exc. VAT) £153.43/unit Quantity	Stannol	-	Lead Free Solder	0.5mm	0%	Wire	217°C	4%	95%	Rosin	250g	-	1%	No
In Stock Multicore Wire, 1.2 mm Lead Solder, 179 °C Melting Point RS Stock No. 551-665 Mfr. Part No. 291749 Subtotal (1 reel of 500 units) £73.51(exc. VAT) £73.51/reel Quantity	Multicore	-	Lead Solder	1.2mm	36%	Wire	179°C	2%	62%	Activated Rosin	500g	-	-	No
In Stock MBO Wire, 0.7 mm Lead Solder, 183 °C Melting Point RS Stock No. 547-344 Mfr. Part No. SN60 PB 7/10 - 3 CANAUX A11 - 100G Subtotal (1 reel of 100 units) £18.36(exc. VAT) £18.36/reel Quantity	MBO	-	Lead Solder	0.7mm	40%	Wire	183°C	-	60%	Rosin	100g	-	-	No
Temporarily out of stock Multicore Wire, 0.46 mm Lead Solder, 188 °C Melting Point RS Stock No. 436-4831 Mfr. Part No. 288498 Subtotal (1 unit) £32.29(exc. VAT) £32.29/unit Quantity	Multicore	-	Lead Solder	0.46mm	40%	Wire	188°C	-	60%	Halogen Free	250g	-	-	No