Top 10 Best rosin flux in 2026

Last Updated - 6/24/2026

🏆Best Choice

MAIYUM

MAIYUM 63-37 Tin Lead Rosin Core Solder Wire for Electrical Soldering (0.8mm 50g)

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•Tin Lead Solder Wire: With Rosin Core Solder Wire
•Parameters: solder wire Tin 63 37
•Flux content 1.8 %，electrical soldering wire dia is 0.8 mm (0.0315 inch)，gross weight 50 gram (0.11 lbs), good size for pocket
•Low Melting Point: 361 °F/183 °C. easy to be soldered, flows smoothly, soldering fast and strong soldering point.
•Applications: Very good soldering capability, esp for circuit board, DIY, home improvement, Repairation of cable/TV/Radio/sterro/ Toys and other electrical devices etc. (WARNING: This product can expose you to lead, which is known to the State of California to cause brith defects or other reproductive harm. For more information go to the offical Proposition 65 Warnings Website)

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$6.29

$8.99

-30%

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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

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

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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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)

9.5

ChoiceComparer.com Score

9.5

/ 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

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

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

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)

9.2

ChoiceComparer.com Score

9.2

/ 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

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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

9.1

ChoiceComparer.com Score

9.1

/ 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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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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E ENERSYSTEC

E ENERSYSTEC Solder Wire No Lead Rosin Core Flux 0.8mm Electric Solder Fine Sn99 Ag0.3 Cu0.7 Flow 0.032in 0.11lb for Electronics Soldering Unlead 50g

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•LEAD FREE SOLDER, content Sn99 Ag0.3 Cu0.7 lead free solder, with rosin core, easy flow, easy soldering, RoHS compliant good for use, thin solder wire no clean, unlead solder wire 0.032 inch
•LOW MELTING TEMPERATURE, The melting point temperature at 419F, suitable for all soldering tools, fine solder wire diameter 0.8mm easy for electric soldering, 50g weight per spool
•GREAT PERFORMANCE, high electrical conductivity, good performance for electronics soldering, standard spool packing easy to use, bright solder joint with strong solder pad, long lifetime
•ROSIN CORE, flow well for electronics soldering, no need extra flux, flux core is good for soldering connector, pcb, small components, tiny parts, fast soldering wire 0.8mm diameter
•WIDELY APPLICATION- the 0.032in diameter solder wire is good for soldering the small electronic components or MCUs, good for electronic DIY, rework, electrical wire soldering, or appliance repair

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$7.99

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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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Thermaltronics

Thermaltronics TMT-FP-1 Rosin Flux Paste, 2.0 oz (57 g)

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•Ideal for electronics soldering, repair & rework
•For Lead & Lead free applications
•Contains 2 ounces in a 3" Dia x 0.62“ H Can
•RoHS Compliant with SGS Report
•No Clean Flux

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$5.99

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