RS PRO Wire, 0.71mm Lead solder, 183°C Melting Point

RS Stock No.:

Technical Reference

Legislation and Compliance

RoHS Status: Non Compliant

Statement of Conformity

RS Components
Statement of Conformity

This statement confirms that the product detailed below complies with the specifications currently published in the RS media and has been subject to the strict quality conditions imposed by RS Components’ internal management systems. Furthermore and where applicable, it confirms that all relevant semiconductor devices have been handled and packed under conditions that meet the administrative and technical requirements of ANSI/ESD S20.20 and EN61340-5-1 electrostatics control standards.

Compliant Product Details
RS stock number 8007661
Product description RS PRO Wire, 0.71mm Lead solder, 183°C Melting Point
Manufacturer / Brand RS PRO

The foregoing information relates to product sold on, or after, the date shown below.


Date Sep 29, 2023

RS Components Pte Ltd Robinson Road, P.O. Box 1582, Singapore 903132

Country of Origin: US

Product Details

RS PRO Colophony-Free Tin/Lead Solder Wire

From the trusted RS PRO brand, this solder wire stands apart due to its colophony-free formulation, making it ideal for those who are sensitive to the rosin fumes that are traditionally found in solder flux.

The flux formulation of this solder wire is ideal for wetting common Printed Circuit Boards (PCBs) and components and leaves behind a clear residue that can be removed with dry brushing for a cleaner look or safely left on the PCB after soldering.

Feature and Benefits

• Versatile soldering wire that can be used for a wide range of soldering tasks
• Alloy used consists of 60% tin and 40% lead
• Melting point between 183-188°C
• Low odour formulation with 1.1% flux content
• Soldering iron typical tip temperature for this solder wire is 320-360°C


Solder is used alongside soldering irons, particularly in securing electrical components to integrated circuit boards. The solder melts easily when heated, and cools quickly, meaning it can be moulded to secure components in place in solder joints. The quick setting nature of solder means it can also be used for light brazing.

Because of its relatively low melting point, solder can be reworked easily by heating it to melting point and using a solder sucker to remove it.

Solder is commonly used with SMD and through-hole components, with applications in repair, prototyping and production.

What are the differences between lead-free solder and leaded solder?

Lead-free solder is generally regarded as having a more positive environmental impact than leaded solder, and also as being safer for human use. However, lead-free solder also has potential production advantages. Lead-free solder can offer better lead spacing, which makes it more suitable for high-density components where pitches are tight. This means potentially better performance where space saving is a concern.

The advantages of lead solder are that it has a lower melting point, which is sometimes preferable for hand working components. Also, lower working temperatures reduces the risk of damage to components and circuit board.

Unlike lead-free solder, lead solder does not have a shelf-life and is less prone to losing quality after prolonged exposure to oxygen. However, many electronic application requirements exclude the use of lead solder, due to the toxicity of lead.


RS PRO aims to be your go-to brand for reliability and value for money. We source great parts at great prices and test everything with our in-house experts to ensure the quality you need.

When it comes to tools, we know that versatility and dependability are what you need. As such, we stock a variety of mainstay and specialist tools to suit any application. Whether you're a professional electrician, technician, engineer or home inventor, RS PRO is here to support you.


The presence of lead in this product makes it imperative that users read the Manufacturer Safety Data Sheet (MSDS) before use and wash their hands after every use.

WARNING : Formulation contains lead which makes this solder wire unsuitable for soldering RoHS compliant products.


Attribute Value
Brand RS PRO
Melting Point 183 °C
Product Weight 250 g
Percent Lead 40 %
Flux Type Colophony Free- ORL0
Percent Tin 60 %
Product Form Wire
Flux Content Percent 2 → 4 %
Wire Diameter 0.71 mm
Model Number NC601
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