Cored Solder Wire – Rosin Flux Cored Solder Wire
Cored Solder Wire or Rosin Flux Cored Solder Wire is Solder Wire with Flux in the Core or Center of the Wire for Better Soldering Results.
Here we will learn about Cored Solder Wire or Flux Cores Colder Wire, its Advantages and Uses in Soldering.
What is Flux Cored Solder Wire?
Cored Solder Wire or Rosin Flux Cored Solder Wire is soldering wire with rosin flux in the core or center for better soldering results. It is an alloy used in the electronics industry for soldering electronic components onto the printed circuit board or two pieces of metal or wires.
Solder can be leaded (Sn/Pb) or lead-free (with no lead). Both leaded and lead-free solder can be either flux cored (with flux in the core of the wire) or solid (with no flux in the core.)
Solder flux is a kind of chemical used by electronic companies to clean surfaces of PCB before soldering electronic components onto the board. The main function of using flux in any circuit board assembly or rework is to clean and remove any oxide from the board prior to soldering. Solder flux helps to deoxidize metals (copper tracks on the PCB and leads of electronic components) and helps better soldering and wetting.
What is Cored Solder Wire?
Cored solder wire is hollow with flux in the core. This flux can be Rosin Activated Flux (RA), Rosin Mildly Activated Flux (RMA) or No-Clean Water Soluble Flux. It is available in various combination of alloy like Tin-Lead (Sn/Pb) or Lead-Free and in various diameters ranging from 0.2 to 1.5mm. It is basically used in hand soldering or wave soldering and rework / repairing.
Solid solder wire doesn’t have this flux in the core. They are solid.
Advantages of Rosin Flux Cored Solder Wire
Rosin Flux Cored Solder Wire has several advantages over solid wire. As explained above, oxides, oil, grease and other such unwanted material can get deposited on the copper tracks of the printed circuit board and the surface of electronic components leads. This oxide and all unwanted impurities must be removed before soldering to get perfect solder joints. These impurities can affect the performance of the circuit board. Soldering flux does this job. Flux removes oxides and other unwanted impurities form the surface of the copper tracks of the board and from the component lead surface. Use of this solder wire with flux in the core saves both time and money.
Soldering with Flux Cored Solder Wire Vs Solid Solder
With solid wire, one has to use flux separately to clean unwanted impurities. This flux is applied on the board and on the lead of the electronic components before hand soldering with a soldering station or soldering iron. In wave soldering, flux is sprayed using fluxer.
With flux cored solder, there is no need to apply flux separately. The flux present in the wire will keep cleaning the board and components leads while soldering. Alpha Cookson are worldwide leaders and manufacture of all types of solder wire, solder paste, solder flux, solder preforms, solder bar, lead free solder and other soldering related products for the electronics manufacturing and PCB assembly industry.
Video: Types of Solder Wire
- How to Clean and Tin Soldering Iron Tip
- Pin Hole and Blow Hole Wave Soldering Defect and Remedy
- Solder Paste and Its Application in SMT
- Top 10 PCB Manufacturers in USA
- Basic Soldering Guide – How to Solder Electronic Components
- PCB Vs PCBA – What is the Difference
- Different Types of Printed Circuit Board (PCB)
- RoHS Guide in Electronics: RoHS, WEEE and Lead-Free FAQ
- SMT Vs Through Hole Technology – Advantages and Disadvantages
- PCB Assembly Machines and Tools
- Solder Wire for Mobile Phone Repairing