Advertising Disclosure

5 Best Solder Fluxes Pastes of 2025

Last Updated - 18/07/2025

1
Best Choice

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

prowithlin

prowithlin Solder Flux, 60 ml, 2pack Soldering Flux with 2 Needles, 1 Pusher, 1 Syringe - 60 g No Clean Flux Soldering Paste for BGA/IC/CPU/PCB/SMD Repair and DIY Projects

prowithlin

£13.99

More Details
Main highlights
- Versatile Applications: Ideal for electronic repairs, PCB assembly, and DIY projects. Reliable performance of solder flux for professionals and hobbyists
- Storage & Shelf Life: Store flux soldering paste in a cool, dry place. 2-year shelf life. Reseal after use to maintain the quality of solder flux
- No-Clean, Non-Corrosive: Rosin-based, acid-free, lead-free, non-conductive flux soldering paste. Good in wetting, easy to solder, has less smoke, and has no annoying smell. Minimal residue, no cleaning needed
- High Capacity & Accessories: 2-pack of 30g solder flux, total 60g. Includes 2 needles, 1 pusher, and 1 syringe. Easy control and no waste with airtight packaging. Perfect for precise application of soldering flux
- Excellent Customer Service: If you have any questions or problems with our solder flux, please feel free to send a message to the seller through Amazon. We will provide you with a satisfactory solution
- Easy to Use: Clean the surface of the object before welding, apply this solder paste on the copper, iron, tin, and other metals at the welding site, and then use the soldering iron to melt the tin at the welding site
£13.99
2

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Bellifluous

Bellifluous Solder Flux, Soldering Flux, 30ml Flux Soldering Paste with 2 Needles and 1 Push Rod, No Cleaning Solder Paste for IC/CPU/PCB/LED/BGA/SMD Precision Electronic Soldering and Repair

Bellifluous

£9.99

More Details
Main highlights
- 【Widely Used】This flux applicator is easy to use and has a wide range of uses. It is not only suitable for welding precision small dense electronic components, PCB circuit boards, integrated circuit boards and circuit boards, the soldering flux for electronics can also be used to repair mobile phone chips, LED lighting, household appliances, welding electrical wiring and mounting components, DIY projects
- 【Reduce Surface Tension】The flux soldering paste can increase the surface wetting force and make the solder fluid to reduce the tension on the solder surface. This solder paste is a material that promotes welding. Applying it during welding can drive the flow of tin, achieve accurate and effective welding, improve welding quality, and reduce false welding
- 【Oxidation Removal】This solder flux can remove the oxide layer on the surface of the welding material and increase the smoothness of the welding surface. After melting, the soldering flux can also adhere firmly to the surface of the solder to form an isolation layer to protect the components and prevent the welding surface from oxidizing again
- 【No-Clean Flux】This flux pen is a mixture with rosin as the main component. It is an auxiliary material to ensure the smooth progress of the welding process. The lead free solder is free of cleaning, lead-free, non-conductive, less residue, and strong viscosity. After assembly, use a push rod to gently apply the welding surface to achieve electronic welding and surface mounting
- 【How To Use】First, clean the soldering surface of electronic components before soldering. Second, assemble the needle-tube low melt solder according to the usage steps. Then, use the push rod of soldering paste to apply the soldering flux to the soldering surface. Finally, heat the soldering iron to above 100°C to melt the tin on the soldering surface and complete the soldering
£9.99
3
Best Value

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

MG Chemicals

MG Chemicals 8341 No Clean Flux Paste, 10 ml Pneumatic Dispenser (Complete with Plunger & Dispensing Tip)

MG Chemicals

£7.54

More Details
Main highlights
- Thixotropic paste; RoHS compliant
- Superior fluxing ability
- Instant wetting; Leaves shiny solder joints
- Compatible with lead free and leaded solder systems
- After soldering, the rosin residue is non corrosive, non conducting, moisture resistant, and fungus resistant
£7.54
4

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

TermoPasty

New flux soldering paste in the 100g tin for electronics SMD plumbing DIY et

TermoPasty

£5.59

More Details
Main highlights
- New flux soldering paste in the 100g tin for electronics SMD plumbing DIY etc
£5.59
5

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

BigyQiu

Sn63/Pb37 Solder Paste,183℃ Melting Point Flux Paste,No Clean Flux Soldering Paste,Syringe Solder Paste with 2 Needles and 1 Pusher,Solder Flux Syringe for Electronics,PCB,IC,CPU,LED,BGA Repairing,15g

BigyQiu

£4.99

More Details
Main highlights
- 【Wide Range of Applications】Electronic solder is suitable for cleaning soldering iron tips, mobile phones,SMD electronic welding,PCB electronic welding,BGA welding process, and other precision chip-level electronic flux welding.
- 【Sn63/Pb37 Solder Paste Composition】183℃ melting point flux paste is made of Sn63% Pb37%, no clean flux soldering paste produces no waste during the soldering process and syringe solder paste with 2 needles and 1 pusher provides high insulation,solder flux syringe for electronics,PCB,IC,CPU,LED,BGA repairing is non-corrosive,so solder paste has the high quality requirements.
- 【High Solder Ability】Solder flux paste has high activity.The flux syringe is significantly moistened during the soldering process, thereby reducing the phenomenon of false soldering by using 183℃ melting point flux paste.And reflow will not produce tin beads and tin bridges when using no clean flux soldering paste.
- 【Easy to Use】Just remove the sealing plug of soldering flux, install the needle,then remove the back cover and install the push rod to use soldering flux for electronics.Solder with flux core is the great choice for your efficient soldering needs.
- 【Advantages】Soldering paste is no clean,flux paste has strong viscosity and bright welding point.The pushing design of solder paste syringe for smoother flowing.No waste is generated when welding with the solder flux syringe.
£4.99

5 Best Solder Fluxes Pastes of 2025

prowithlin Solder Flux, 60 ml, 2pack Soldering Flux with 2 Needles, 1 Pusher, 1 Syringe - 60 g No Clean Flux Soldering Paste for BGA/IC/CPU/PCB/SMD Repair and DIY Projects

Bellifluous Solder Flux, Soldering Flux, 30ml Flux Soldering Paste with 2 Needles and 1 Push Rod, No Cleaning Solder Paste for IC/CPU/PCB/LED/BGA/SMD Precision Electronic Soldering and Repair

MG Chemicals 8341 No Clean Flux Paste, 10 ml Pneumatic Dispenser (Complete with Plunger & Dispensing Tip)

New flux soldering paste in the 100g tin for electronics SMD plumbing DIY et

Sn63/Pb37 Solder Paste,183℃ Melting Point Flux Paste,No Clean Flux Soldering Paste,Syringe Solder Paste with 2 Needles and 1 Pusher,Solder Flux Syringe for Electronics,PCB,IC,CPU,LED,BGA Repairing,15g

You may also like...

Flintronic 15g Sn42/Bi58 Lead Free Solder Paste, 138°C Low Temperature Flux Paste, Syringe Solder Paste with 2 Needles and 1 Pusher, Flux Soldering Paste for BGA, IC, PCB, CPU, LED, SMT

Gruiqrd 40g Solder Tin Paste with Syringe,138°C Low Temperature Syringe Solder Paste, Sn42/Bi58 Flux Soldering Paste with 4 Needles and 1 Push Rod, Solder Paste for Bag,PCB, CPU, SMT

BEEYUIHF SMD Soldering Flux Paste, No Clean Electrical Flux for Soldering, 10 mL Syringe Electronics Solder Flux Paste for PCB/IC/BGA/LED Repairing DIY #8403

50g Solder Flux Paste, Gruiqrd Electrical Solder Flux Paste, No-Clean Solder Paste Grease Professional Mechanic Welding Repair Tool for Phone SMD PCB BGA PGA (Lead Free)

BEEYUIHF No-Clean Flux Paste for Soldering, Lead-Free Solder Flux, SMD Soldering Flux Paste, No Residue Flux for PCB BGA IC LED SMT Electrical Soldering Repair (1.76oz/50g)

Solder Flux Paste 10g Rosin Solder Flux Tin Paste Solder Grease No-Clean Lead-Free Flux Environmentally Friendly Solder Paste Welding Repair Tool for Phone Computer SMD PCB BGA Home Appliance

10g Solder Flux, Flux Soldering Paste, No-Clean Solder Grease Professional Mechanic Welding Repair for Mobile Phone, Home Appliance, Computer Motherboard et

Professional Soldering Paste with 10g Flux for Mobiles, Appliances & Computers - No-Clean Solder Grease Ideal for Welding & Mechanic Maintenance

Termo Pasty Solder Paste 100 g

2Pcs No-Clean Solder Flux Paste | Professional Welding Grease for Mobile Phones, Home Appliances, Computer Motherboards & More | Mechanic Essential 10g

Sign up and get exclusive special deals