Top 10 Best solder 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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Essmetuin

Solder Wick and Soldering flux for Electronics Repair, No Clean Flux, Solder Removal Kit

9.7

ChoiceComparer.com Score

9.7

/ 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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$16.04

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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)

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

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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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

9.4

ChoiceComparer.com Score

9.4

/ 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)

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

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

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

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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Lesnow

Lesnow Solder Flux Paste, 2 sets No Clean Soldering Flux For Electronics Desoldering, Soldering, Solder Fluxs For Electronics Repair And Disassemble Electrical Components

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•Perfect Match: The Package Contains 2 Sets Of High-Quality Piston Solder Flux.Each Containing 1stick Of 10ml Flux, 1 Plunger And2 Dispensing Heads, Can Meet Your Needs In Any Situation.

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$9.99

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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)

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

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)

8.6

ChoiceComparer.com Score

8.6

/ 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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TOWOT

TOWOT 10ft Solder Wick Braid & No-Clean Soldering Flux Paste (10cc) - Desoldering Kit for Electronics Repair, PCB, Circuit Board Rework

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•No-Clean Flux & Desoldering Wick Kit – Includes 10cc of high-activity rosin flux paste and 10ft (3m) of 0.1" braided copper solder wick.
•Effortlessly Remove Solder & Oxidation – This high-performance kit quickly absorbs excess solder and breaks down tough oxidation without messy residue. Fully compliant with RoHS and MSDS safety standards for reliable electronics repair.
•Low Residue – Our Solder Wick Braid leaves only a minimal amount of non-conductive, non-corrosive residue after use. Requires no cleaning, reduces the risk of short circuits, and is ideal for high-precision SMD work and hobbyist projects where cleanliness is critical.
•Boost Soldering Efficiency & Strength – Our rosin flux aggressively cleans corrosion from copper traces and leads, guaranteeing smooth solder flow and forming strong, lasting bonds on every connection.
•The Only Kit You Need – Get both solder wick braid and no-clean solder flux meets all your soldering and desoldering needs. Ideal for appliance repair, instrumentation, smartphone maintenance, SMD rework, and electronic component installation.

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$9.99

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