Top 10 Best soldering flux for electronics in 2026

Last Updated - 6/22/2026

🏆Best Choice

SRA Soldering Products

SRA Solder 135 Rosin Paste Soldering Flux For Electronics, No Clean Flux Made for Lead and Lead-Free Solder Circuit Boards and Copper Electrical Wire - Safe Clean Residues with No Goopy Mess (2oz Jar)

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•USA Quality Flux - Achieve the soldering results you desire with SRA 135. Our rosin paste flux is impurity free with superior solder flux paste wetting performance. Rosin flux soldering perfected.
•No Goop Solder Flux - Semi-solid solder wax consistency gives you superior control over application. Simply dip copper electric wires or apply electronic rosin flux to PCB and watch the solder flow!
•Electric Solder Flux - Unlike paste flux wax found at the hardware store, SRA 135 acid free electronics soldering flux is the safe and effective choice for electrical and electronic applications.
•Flux Specifications - 135 is a type RA (Rosen Activated) Flux with an Active Temp. Range of 93 – 315°C / 200 – 600°F. This listing is for one 2oz (56.6g) jar of electrical flux paste.
•Flux for soldering DIY electronics projects including Car Audio, Stereo & Hifi, Computers, RC Vehicles, Drones / FPV, Musical Instruments, Gaming Consoles, Model Railroad, Arduino / Raspberry Pi, etc.

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$8.49

$10.99

-23%

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TOWOT

TOWOT 63-37 High Purity Tin Lead Rosin Core Solder Wire for Electrical Soldering, Content 1.8% Solder flux (1.0mm, 50g)

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•[Alloy Parameters] -- Solder wire Tin 63% Lead 37% (Sn63 Pb37)；Solder flux Content:1.8%
•[Parameters of Solder Wire] -- Diameter: 1.0mm /Weight: 50 g
•[Perfect soldering capability] -- This wire has a low melting point, flows smoothly, has fast soldering speed, and has strong solder joints.
•[Applications] -- The features of solder wire can help people solder easier. Especially suitable for circuit board, TV, radio, and other home appliances repair, DIY, home decoration.
•[After-sales Guarantee] -- In order to bring you a better shopping experience, if you have any questions, please feel free to contact us. We will reply as soon as possible. Thank you!

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$5.09

$6.99

-27%

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Essmetuin

Desoldering Wick and Soldering Flux Paste for Electronics Repair, No Clean Flux(10CC), Solder Removal Kit

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•Quick Removal: This desoldering wick and no clean flux paste set allows for fast, effective removal of solder from circuit boards without damaging components.
•Low Residue: No Clean Solder Wick, As Only a Small Amount of Residue is Left After Use, Saving You Time On Cleaning
•High Activity Rosin Can Help To Remove The Oxide Layer On The Welding Surface Easily
•Convenient Kit: Get both desoldering wick and no clean flux paste together in one compact kit for complete soldering and desoldering solutions wherever your repair work takes you.
•Reliable Brand: Trusted by electronics technicians, this brand delivers consistent performance repair after repair.

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$9.99

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Romeda

2 Jar Solder Flux, Flux for Soldering, Rosin Soldering Flux Paste for Lead-Free Electronics Soldering and Soldering DIY (1.2oz/35g in a Jar)

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•ENOUGHT QUANTITY: The package includes 2 jars of soldering flux. A total of 70 g. Enough quantity for your use.
•NON-CORROSIVE: Rosin is not conductive in dry conditions and has good insulation. Is not corrosive to metal substances such as circuit boards.
•OXIDATION RESISTANCE: Anti-oxidation effect on soldering iron head of gold-copper alloy substrate. Solder flux for semi-solid, not easy to dump.
•STRONG APPLICABILITY: Flux is suitable for welding instruments, gold, copper, tin, iron and other metals. Ideal for electronic welding, repair and rework.
•WHAT YOU GET: Rosin soldering flux paste * 2, our 7*24 friendly customer service for peace of mind.

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$5.99

$9.99

-40%

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Essmetuin

Essmetuin No Clean Soldering Flux Paste(4Pack), Solder Flux For Electronics Soldering, Tin soldering, Lead-Free Rosin Soldering Flux For Circuit Boards and Copper Electrical Wire

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•Lead-Free, Halogen Free, Non-Corrosive, Good Flow Ability
•High Purity Rosin Soldering Flux, Good Helper For Repairing And Soldering
•Product Advantages: Pushing-Type Design Smoother Flowing No Wasting During Welding
•High Activity Rosin Can Help To Remove The Oxide Layer On The Welding Surface Easily
•Suitable For Soldering PCB, SMD, SMT, Handwork, Phone, Home Appliance and Meters Repairing

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$14.95

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QUIMTECH

Liquid Solder Flux Dropper (30 ml/1 Oz.) I RMA Liquid Solder Flux I Soldering Flux I Electrical Solder I No Clean Liquid Flux I Rosin Flux I Soldering Flux for Electronics I Lead Free Liquid Solder I

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•✔️EXCELLENT QUALITY :High purity, Advanced RMA -Rosin Midly Activated- Liquid flux formula, RoHS Certificate Compliant, Organic, Environmental friendly soldering liquid flux . Formulation for electronic soldering applications. It is effective in removing oxides from Tin-Lead, Lead-free, Gold, Silver and Copper alloys.
•✔️ENOUGHT QUANTITY: The package includes 1 High Quality Dropper of soldering liquid flux, 30 ml net Volume. Excellent Immersion, wettability, chemical and technical properties. Thus, Enough quantity for your use. Strong soldering and welding power resulting strong low residual joints
•✔️NON-CORROSIVE: Formulation with neutral pH, no corrosion involve after soldering process. Rosin is not conductive in dry conditions and has good insulation. Is not corrosive to metal surfaces such as circuit boards
•✔️OXIDATION RESISTANCE: Anti-oxidation effect through soldering , desoldering, rework and reflow electronic processes for their high boiling formulation components. Giving as a result smooth, shiny and uniform soldering joints.
•✔️NON TOXIC: Organic High Purity formulation, stable performance and low volatility for long use cycles, no irritant smell, Lead-free, Zinc Chloride-free and Ammonium Chloride-free.

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$6.99

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LINAERSHAO

10g Solder Flux, Soldering Flux Paste, No-Clean Solder Grease, Professional Mechanic Welding Repair, For Electronics, Mobile Phone, Home Appliance, Computer Motherboard (0.35oz Jar)

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•Packing List: One box of 10g/0.35oz flux paste. The flux paste is yellow in colour and comes in a metal tin.
•Product Features: The flux has excellent wetting properties, weldability, and insulation properties. It leaves minimal residue, produces little smoke, and has no irritating odour.
•Easy to Use: Can be applied by squeezing, brushing, using a cotton swab, or dipping.
•Usage Instructions: Before soldering, clean the surface of the item to be soldered. Apply the solder paste to the metal surfaces (such as copper, iron, or tin) to be soldered, then use a soldering iron to melt the solder at the soldering point. It facilitates smoother solder flow and is a reliable tool for repairs and soldering.
•Application Scenarios: The solder paste is suitable for mobile phone repairs, computer motherboards, home appliance repairs, and more.

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$4.19

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Rectorseal

Rectorseal 14000 1.7-Ounce Nokorode Regular Paste Flux

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•Cleans and fluxes in one operation saving time and money
•Special oil base protects the solder joint against corrosive attack
•It's non-aggressive formula is ideal when used on copper and brass fittings
•Lead free and acid free-safe to use on potable water systems
•When heated, it reduces surface tension and allows the solder to flow easily and uniformly into the joint

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$3.25

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BEEYUIHF

BEEYUIHF No-Clean Soldering Flux Paste, flux for Soldering, Solder Paste for Electronics PCB/IC/BGA/SMD Repairing (5.15oz/146g)

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•BEEYUIHF Solder paste flux: Net weight: (3.52oz/100g); Gross weight: (5.15oz/146g)
•Rosin Solder Paste Flux, made of no acid, Lead-Free, No-Clean, soldering flux paste which is not easy to dump. Rosin soldering paste,high purity,good helper for repairing and welding.Convenient syringe dispenser ideal for touch up and repair of surface mount assemblies.
•No clean Industrial grade Solder Flux advantage: Lead-Free, No-clean, halogen-free, acid-free, no corrosion, high intensity joint, good immersion,good insulation, very little residue, easy to tin, help soldering firm, make soldering fluidity better, slightly yellow paste.
•Soldering flux paste application: Mobile phone repair, computer and digital service industries, high-precision circuit board SMT soldering, BGA welding process, Maintenance drag soldering, BGA planting tin, maintenance desoldering, electronic components soldering, mobile phone maintenance, mobile phone chip maintenance, LED lighting, home appliance maintenance,etc.
•About our #9530 soldering flux paste: No Clean flux paste. Convenient syringe dispenser ideal for touch up and repair of surface mount assemblies.

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$12.99

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BEEYUIHF

BEEYUIHF Rosin Solder Flux Paste, Flux for Soldering for SMD BGA LED PCB IC CPU electronic repair & soldering (1.76oz/50g)

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•BEEYUIHF #7190 flux is a rosin and active flux, weak acidic PH ± 0.3, with unique solderability, good insulation of electronic components, non-conductive, to ensure the stability of the solder. This flux has the characteristics of fast drying, bright and full structure of the solder joint, excellent and stable wettability.
•#7190 Activated Rosin Soldering Flux Paste Feature: Lead-Free/Fast Tinning/Prevents Oxidation/Excellent wettability/High tack force/high intensity joint/good insulation/good soldering properties/smooth welding surface.
•Flux for soldering application: Maintenance drag soldering, BGA planting tin, maintenance desoldering, electronic components soldering, mobile phone maintenance, mobile phone chip maintenance, LED lighting, home appliance maintenance.
•Flux paste is a chemical substance that promotes soldering and at the same time has a protective effect and prevents oxidation reactions. Flux is an indispensable auxiliary material in soldering, and its role is extremely important. It is suitable for most of the soldering wire, wire soldering, IC, PCB, SMD, BGA, DIY soldering, etc.
•#7190 flux soldering after a little residue, and will not affect the soldering effect, but for the beauty of the solder, you can take a cleaning cloth to wipe to wash clean.

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$5.99

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