Best Fluxes 2025

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Last Updated - 26.07.2025

Best Choice

01

KELLYSHUN

KELLYSHUN NC-559 Flux Soldering, 100 g, No-Clean Lead-Free Rosin Flux (Pack of 1), 2.5 mm / 1.5 m Desoldering Braid (1 Piece), Suitable for SMD, BGA, PCB, Household Appliance Repairs

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9.9

Exceptional

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Main highlights

Suitable for BGA soldering, SMT, PCB, household appliances
Plunger design, even flow, precise control of flux release, reduces solder waste
Lead-free, halogen-free, non-corrosive, no-clean, good wetting, oxidation resistant, RoHS compliant
Highly active flux: easily removes the oxide layer from the soldering surface
Desoldering braid: made of high-purity oxygen-free copper, high thermal conductivity, residue-free, quick and effective when vacuuming excess solder

14,99 €
02

BEEYUIHF

BEEYUIHF No Clean Soldering Paste Flux, BGA Soldering Flux Paste, Electronic Flux Pastes for BGA/IC/CPU/PCB/SMD Solder (5.15oz/146g)

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9.8

Exceptional

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Main highlights

Soldering paste flux, made from no acid, lead-free, no-clean, non-resistive, non-conductive, non-corrosive for electronic components, ideal for soldering ICs and BGAs, strong deoxidation capacity for wires, ideal for wiring.
Industrial grade solder flux advantage: lead-free, no-clean, halogen-free, acid-free, no corrosion, high intensity of connection, good immersion, good insulation, very little residue, easy to tin, helps solder firmly, makes soldering more liquid, slightly yellow soldering flux paste.
BEEYUIHF Soldering flux paste net weight: (3.52oz/100g); gross weight: (5.15oz/146g)
Application of soldering flux paste: mobile phone repair, computer and digital service industry, high-precision SMT soldering of circuit boards, BGA welding process, maintenance drag soldering, BGA-plant tinning, maintenance desoldering, soldering electronic components, maintenance of mobile phones, maintenance of mobile phones, maintenance of mobile phones, maintenance of mobile phones, maintenance of mobile phones, maintenance of mobile phones, LED lighting, household appliance maintenance, etc.
About our #9530 Solder Flux Paste: No Clean Flux Paste.

12,99 €
03

LINAERSHAO

1 x 10 g flux paste, solder grease flux, solder paste, solder paste, solder paste, for mechanics, metal, tin, telephone, PC cards, components

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9.7

Exceptional

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Main highlights

You will receive a box of 10 g solder paste with little residue, good wetting properties, easy soldering, easy soldering and firm soldering.
The flux paste is packed in metal cans and high-quality iron boxes, which are not easy to break.
Solder paste can be used for welding electronic components. It is used for easy and durable welding and has the properties of quick cleaning and good insulation.
It is suitable for welding machines, metres, gold, copper, iron, tin and other metals. It is widely used in welding precision electronics products such as PCB, PGA, SMD, etc.
Before welding, wipe the surface of the item, apply the paste to the copper, iron, tin and other metals to be welded, and then use the soldering iron to melt the tin at the welding point.

3,99 €
04

BEEYUIHF

BEEYUIHF No-Clean Flux Soldering, Solder Paste Flux, SMD Electronic Solder Flux Solder Paste, Solder Grease Flux Pastes for BGA Reflow, CPU/PCB/SMD/IC Solder (10 ml Syringes) #8403

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9.6

Exceptional

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Main highlights

The most prominent role of # 8403 flux is to remove oxidation, soldering flux is a kind of chemical substances to promote soldering, have the surface of the soldering material oil to remove oil, remove the oxide layer, increase the role of the soldering surface. Flux paste also has the task of protecting components and preventing reoxidation. Flux is an indispensable auxiliary material when soldering and repairing to achieve better soldering and repair results.
The main function of #8403 solder flux is to reduce the surface tension caused by the contact between the solder and the metal of the pencil, increase the wetting force of the surface and improve the penetration of the organic activator, which is the key role of the flux. Flux paste is fine and white, with very little residue, and can achieve the performance of no clean.
How to use electronic flux: wipe the electronic components and their circuit board clean before soldering, press the right amount of flux on the surface of the components or wire, heat the soldering iron to 200 °C or more, and then the tin will be melted in the solder. After adding flux, it is very easy to put on the tin, and the structure of the solder joint is very full and strong and bright.
BEEYUIHF #8403 is made of no clean, halogen-free, acid-free, non-corrosive flux, white paste, good flowability, moderate viscosity, less residue, less smoke, suitable for mobile phone PCB, BGA and PGA and other SMD ball array solder joints rework and ball patching.
#8403 soldering flux paste product applications: applicable to sensors, wires, motors, fuses, connectors, metal shells, lighting, electronic components, SMT repair, BGA chip ball implantation, etc.

7,99 €
Value for Money

05

KELLYSHUN

KELLYSHUN KL-558 Flux Soldering, 10 ml No-Clean Lead-Free Rosin Flux (1 Piece) 2.5 mm / 1.5 m Desoldering Braid (1 Piece), Suitable for Mobile Phone Soldering, BGA, Household Appliance Repairs

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19% Off
9.5

Excellent

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.

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Main highlights

Suitable for BGA soldering, SMT, household appliances, instruments, mobile phone repairs
Plunger design, even flow, precise control of flux release, reduces solder waste
Lead-free, halogen-free, non-corrosive, no-clean, good wetting, oxidation resistant, RoHS compliant
Highly active flux: easily removes the oxide layer from the soldering surface
Desoldering braid: made of high-purity oxygen-free copper, high thermal conductivity, residue-free, quick and effective when vacuuming excess solder

8,07 € 9,99 €(19% Off off)
06

CEXUN

1 x 20 g syringe soldering paste, syringe electronic flux with 2 needle dispensing tools, flux soldering rosin, soldering flux tin paste

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9.3

Excellent

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.

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Main highlights

You will receive: one needle repair solder paste with a push rod and two needles.
Usage Wipe the surface of the item before welding, apply this paste to the copper, iron, tin and other metals to be welded, and then use soldering iron to melt tin at the welding point.
Scope of application: it is applicable to welding flow for welding instruments, metals, such as gold, copper, iron and the maintenance of electrical appliances.
Product Model: Sn42Bi58 Lead Free Low Temperature; 20g
Melting point: 138℃

4,29 €
07

Walfront

951 Solder Flux Pen Low Solids No-Clean Flux Pen Rosin Flux Pen for SMT, SMD, Circuit Board Soldering

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9.1

Excellent

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.

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Main highlights

[Superior fluxing ability]: Flux flows smoothly for consistently safe and uniform solder joints with no mess, greatly improves soldering performance.
[Lead-free]: lead-free, no-clean.
[Application]: This Flux pen pen, mainly used for revision and touching-up SMT, SMD, PCB and solder joints through the hole.
Rosin Flux Pen Pen: The rosin residue is non-corrosive, non-conductive, moisture-resistant, and fungal resistant.
Low solids: low solids content for almost no residue, no-clean.

7,99 €
08

AOUZOVLI

Flux Soldering Flux 20 ml, Flux Solder Paste Flux SMD Electronic Solder Flux Solder Paste Grease Flux Paste Solder Grease Flux Pastes for BGA Reflow, CPU/PCB/SMD/IC Solder

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9.0

Excellent

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.

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Main highlights

Wide range of applications: whether you work on the assembly line or repair electronic devices at home, you can use this soldering flux. Soldering flux has a wide range of applications and is suitable for cleaning soldering iron tips, mobile phones, BGA-repairs, PC cards and other precision flux soldering at chip level.
Lower melting point: this flux soldering has a lower melting point and is suitable for use in areas that are not resistant to high temperatures. This can effectively protect your electronic components and avoid component damage that occurs when using flux for high temperature welding.
High-quality material, remarkable welding effect: this solder paste flux is made of high-quality material with remarkable welding effect and high welding speed. In this way, you can do more welding work in a short time with SMD electronics solder flux solder paste, improve your work efficiency and save valuable time.
Extensive product list: Our product list includes 2 sets of flux soldering, including 2 push rods and 4 needles, so you always have a replacement at hand. No matter when and where you want, you can easily use flux for welding work. Solder paste flux has a strong oxidation removal effect on substrates and wires made of gold-copper alloys.
Easy to use and reliable: this SMD electronic solder flux solder paste is easy to use and reliable, making it the ideal choice for your welding requirements. It is lead and halogen free and meets environmental protection and health standards, so you can use Soldering Flux with peace of mind without worrying about the impact on the environment and health.

7,59 €
09

LABUYI

50 g Solder Paste, Solder Grease, Flux Solder Paste, Soldering Flux, Solder Grease Flux, for Gold, Copper, Iron, Tin, Instruments, Mechanics (Net Weight 50 g)

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8.9

Very Good

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.

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Main highlights

You will receive a box of solder paste with a net weight of 50 g and a neutral pH value of 7 ± 0.3; high-quality iron box packaging, not easily broken, easy to carry.
Wide range of applications, very suitable for repairing mobile phones, computer motherboards, SMT patches, wire soldering, LED patches, audio circuit boards, BGA tin planting, household appliance repair, etc.
Less residue, good tin wetting, easy to solder, less smoke, no irritating smell.
Clean the surface of the item before welding, apply this paste to copper, iron, tin and other metals at the welding point and then melt the tin at the welding point with a soldering iron.
Butter ointment, contains rosin resin, non-toxic, lead-free, safe and reliable, good insulation; For gold copper alloy substrates, the electric soldering iron tip has an antioxidant effect, semi-solid is not easy to deflate.

5,29 €
10

Chip Quik

Liquid Flux No-Clean Pen with Tip 10 ml (0.34 oz)

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8.7

Very Good

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.

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Main highlights

Lead free/RoHS compliant

11,59 €