Best Soldering Flux For Electronics – Reviews In 2022

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Electronics soldering requires you to have corrosion-resistant flux that can be cleaned easily. Flux for soldering electronics comes in various kinds, and if you don’t have enough experience, purchasing the right one would be quite hard.

We talked with soldering experts to find out their opinions on what kind of flux they use. Even though most of them have their own preferences, some common brands were mentioned. Collecting these options, we were able to create the ultimate 2022 list for the best flux available for soldering electronics. Here they are:

Best Flux for Soldering Electronics 2022 Reviews

1. No Clean Tacky Soldering Flux


  • Weight: 1.58 Ounces
  • Dimensions: 6.7 x 3 x 0.5
  • Material: Solder Flux
  • Part Number: 247-FLUX-5
  • Manufacturer: 247 Solder
No Clean Tacky Soldering Flux

No matter whatever soldering task you have at your hand, the No-Clean Tacky Soldering Flux is the ultimate solution to preventing oxidizing. This quality product is highly capable of protecting the metal or circuit board that you are soldering and leaves a shiny outcome.

Suitable for electronic soldering, the solder flux comes with two additional dispensing tips. So, you can use them based on necessity. The product has five grams of soldering flux, enough for any long-lasting soldering project. As a top-quality soldering flux, this item is loved by lots of experts and pros.

Apparently, the soldering flux comes in a durable syringe that allows you to apply them pretty with ease. Manufactured by the 247 Solder brand, this flux can give you the clean soldering result you desire.

It comes in the form of paste but liquefies so quickly if heated. You can use the item for your jewelry projects too. Just a little amount of this flux and you can do your task with no worry.

This item is available at a very affordable price. We highly recommend the soldering flux if you prefer only quality products at your workplace.


  • Works with both lead and lead-free solders.
  • Does not damage the board without cleanup.
  • Gel consistency; you do not have to clean for light messes.
  • Two different tips provided are great for the controlled application of the flux.


  • Can liquefy over time due to heat; good idea to clean it up.

2. SRA Soldering Products Rosin Paste Flux


  • Weight: 2 Ounces
  • Dimensions: 3 x 1 x 3
  • Material: Other
  • Power Source: Manual
  • Color: Rosin Paste
SRA Soldering Products Rosin Paste Flux

You may find many quality soldering fluxes, but one that provides a great result as the SRA Rosin Paste Flux is hard to come by. This useful product will make your work easier and improve the quality of your soldering result. Trying this item on your next soldering project will be worth it.

Available at a price below $10, this soldering flux comes in a jar that protects the item from encountering foreign particles. The Hockey-Puck jar can contain two ounces, and it is filled with flux. Made in the USA, the product gained a lot of popularity in the soldering community.

Apply the flux on the place that needs soldering and set enough heat to melt the metal. The flux will cover the area and won’t let any oxidation occur. After your work is complete, you will find an amazingly neat outcome.

If there is any residue, you can clean it with a rag or cloth. This item is especially suitable for electronic circuits or jewelry. It is best to avoid alloys with lead while using this flux. Its temp range is 200 to 600-degree F. Try it out quick.


  • Has a great active temperature range of 200 to 600 degrees; does not liquefy easily after applying.
  • Corrosion prevention coating after applying the flux.
  • The viscosity is pretty good for applying in small amounts without making a mess.
  • Easy to apply with a toothpick.


  • The residues can be a bit harder to clean, but it isn’t necessary to clean them.

3. Chip Quik Liquid Flux No-Clean


  • Weight: .32 Ounces
  • Dimensions: 7 x 2 x 0.2
  • Material: Liquid Flux
  • Pen 10ml Shelf Life Refrigerated
  • Part Number: CQ4LF
Chip Quik Liquid Flux No-Clean

If you like a soldering flux that you can apply so easily on the right areas, then go for Chip Quik Liquid Flux No-Clean. It is because the contents come with a w/tip in a pen-like body. So, you can apply it like how you write something holding a pen. It weighs only 0.34 ounces.

It is requested by the manufacturers to go for lead-free alloys while using this soldering flux. You can use the item on many of your soldering projects as it contains 10 ml of liquid flux. It covers the area of soldering swiftly and creates a layer of protection.

It is amazing how you can keep it in your refrigerator and conserve it for two years without spoiling the contents. You can even freeze the flux with no problem.

However, before using it, allow it to reach 68 to 77-degree F temperature. Because of the high and low heat-resistance, the item won’t spoil even during the shipping process. As its name suggests, it requires no cleaning.

Earning lots of positive reviews and ratings, we now think that this soldering flux can be the best item for your soldering needs.


  • Suitable for lead-free soldering.
  • Applying is easier than paste ones.
  • Does not get hard over time or during cold weathers like paste flux.
  • Comes with a spare tip in case you damage the one included.


  • The tip can wear out fast.

4. Kester 186 Liquid Soldering Flux


  • Weight: 2.5 Ounces
  • Dimensions: 6 x 4 x 4
  • Material: Resin
  • Improves soldering performance
  • Part Number: 730-T186-2
Kester 186 Liquid Soldering Flux

When you are going for heavy-duty soldering, you need the best soldering flux like the Kester 186 Liquid Soldering Flux. It provides the best outcome in your soldering project and is incomparable. It is an excellent for beginners and expert alike. Manufacturers made sure to make it easy to apply the flux on the soldering areas.

The flux comes into a bottle of 2 ounces. This bottle will be completely full. Apparently, you can use the nozzle on the bottle-cap to apply the contents instead of opening the bottle. You can use this flux on projects that require high-temperature to solder.

It can resist high heat. You can also preserve this product at freezing temperatures. Not only does the soldering flux provides a neat and clean result, but there will be no oxidization too. Hence, you will not have to waste any time cleaning up the areas after soldering.

For electronic soldering like circuit repair or any soldering rework, it is so ideal. The material of the soldering flux is resin. It stays as liquid and covers the area of soldering that you can remove later using a rug. This item will not disappoint you.


  • Features greater thermal stability, meaning it will be suitable for multi-layer assemblies.
  • Very soluble on cleaning solvents, and it does not change due to temperature.
  • Quality Lur-lock fitting that provides quality locking.
  • Does not have very bad odor like usual flux.


  • Can’t seal it with the needle on.

5. Plusivo Solder Wire and Rosin Paste Flux Kit


  • Weight: 4.5 Ounces
  • Dimensions: 12.8 x 2.99 x 2.99
  • Material: Plastic/Metal
  • Style: Solder flux
  • Manufacturer: MINGQ
Plusivo Solder Wire and Rosin Paste Flux Kit

Plusivo is a pretty well-known brand when it comes to manufacturing soldering tools and items. To keep their popularity firm, they created the Plusivo Solder Wire and Rosin Paste Flux Kit. It is a combination of an excellent solder wire and top-quality solder flux.

At first, let us talk about the solder wire a little. The solder-wires in it are 0.6 mm in width, and the weight of them is 50 grams. You can use them when you need additional wires in your electronic projects. You can also do your DIY with this item. It is a 60-40 wire with a tin and lead core.

About the flux, it is a rosin flux that excels at giving you a quality solder. Have the best soldering experience by not having to clean up the soldering areas after your work is over. It provides the necessary protection against oxidization.

Additionally, you will also get two small-sized screwdrivers and a PVC jacket. Since you are getting all these at a really low-price, it will be a wise purchase. We could not find any flaw in the product. It is a reliable product to get.


  • Comes with a quality 60/40 tin for soldering.
  • The mini screwdrivers not only help with your electronics but also helps with applying the flux.
  • Does not require cleaning as it doesn’t affect electric conductivity.
  • Comes with two 22AWG wires.


  • The flux can get strong over time and gets harder to clean.

6. EURO TOOL Handy Flux


  • Weight: 4.8 Ounces
  • Dimensions: 3.8 x 2.1 x 2
  • Very durable and powerful
  • Protects parts up to 1600 degrees
  • Great for soldering and pickling
EURO TOOL Handy Flux

As we were personally testing the soldering fluxes, the EURO TOOL Handy Flux proved its worth as one of the best products in the item. It not only is just a top-notch product, but it comes in a protective jar that keeps it okay for a long time.

Use this product if your field of work is brazing and soldering in circuitry works. To let you use the fluxes for a long time, the manufacturers give seven ounces of its contents in the jar. As you may need to look for additional means to apply the flux, they also added a brush in the package.

You can clean any residue that has been left behind with warm water. Talk about temperature resistance, as the flux can resist and shield any metal from oxidization up to 1600-degree F. As a result, no matter if you go for high or low-temperature projects, you can use the flux with no worry.

You will need to provide 600-degree F to the areas to melt the paste. It comes in paste form, and its type is fluoride. As a result, if your project contains non-ferrous metals, then it is the most suited flux.


  • Has great temperature endurance up to 1600 degrees.
  • Can be easily cleaned without an alcohol solution; it only needs hot water.
  • Can dissolve oxide by melting at 600 degrees.
  • Comes with a brush for applying.


  • Requires proper cleaning.
  • Has trouble with flowing.

7. YCD 4-in-1 Welding Tool Set


  • Weight: 5.6 Ounces
  • Dimensions: 4.2 x 4.1 x 2.9
  • Material: Metal
  • Less residue, no need to clean
  • Good fluidity & uniform heating
YCD 4-in-1 Welding Tool Set

The YCD 4-in-1 Welding Tool Set comes with four different soldering items, as its name suggests. But that is not the reason we added the item to our list. We did that because all the parts are of the best-grade, including, of course, the soldering flux. Not to mention, the contents in the package were all so useful in different soldering and welding tasks.

This set of soldering tools features a soldering flux in a jar of 0.35 ounce. This flux is of the rosin type that you can apply with a brush on the electronic parts. By quickening the soldering flow, this flux will improve the preciseness of the result. The solder you provide will cool down without any oxidization. It does not need any cleaning after usage.

Then there is a solder wire in the package that weighs 1.76 ounces. You can get a high fluidity and improved joints at the soldering area by using this solder wire.

To keep a constant heat, use the tip cleaner that comes in this package. There will also be a desoldering core of 29.5 mm length and 2 mm width. It does not require cleaning.


  • An entire set including iron tip cleaner, flux, solder wire, soldering core for all around soldering.
  • The flux does not require cleaning and causes less residue.
  • The desoldering core is better than usual cores for removing solders and correcting works.
  • The full set comes at a fraction of the cost compared to other options.


  • Other than the tip cleaner, the rest of the unit is tiny.
  • The solder wire is thinner than usual.

8. MG Chemical – 835 Liquid Rosin Flux


  • Weight: 4.09 Ounces
  • Dimensions: 2 x 2 x 5
  • Non-corrosive
  • Non-hygroscopic
  • RoHS compliant
MG Chemical – 835 Liquid Rosin Flux

When it comes to the purest soldering result, the MG Chemical – 835 Liquid Rosin Flux got it with no problem. This item is recommended for both pros and novices.  It is the perfect soldering flux for electronic works. The item comes in a pretty big bottle to give you a long-lasting work capability.

The bottle this soldering flux comes into has a size of 125 ml. That is more than enough to use on many soldering tasks. Ideal for projects that do not involve lead, you can use this item on your solder touch-up task. Aside from that, you can use it to repair any damaged circuit or wiring.

This item is certified by RoHS, which says a lot about its quality. You do not need to wait long for the flux to liquify. As you apply the contents, you should not worry about any corrosion.

For a better experience, there is a pen to apply the flux too. The rosin in this flux is of WW-grade. We have seen how the item won the mind of many. Taking this item will be a wise pick for any solder worker.


  • You can use it on both lead-free and leaded alloy.
  • Good wettability makes the solder easier to apply compared to paste flux.
  • Easy to clean with alcohol without leaving residue.
  • Halogen-free, being one of the best options available right now.


  • Burns easily at low temperature while leaving brownish residue; however, it isn’t uncommon for such flux.

9. HengTianMei Soldering Flux Kit


  • Weight: 7.8 Ounces
  • Dimensions: 10.71 x 8.86 x 1.18
  • Size: WIRE
  • Rosin Core Solder Wire
  • Protects The Solder Joint
HengTianMei Soldering Flux Kit

Our next product comes from another well-popular brand. Their HengTianMei Soldering Flux Kit can grant you a grand outcome no matter what soldering task you will perform. Since the consumers deserve the best, the manufacturers were of utmost care when creating the item.

By buying this product, you will get yourself some soldering flux and a solder wire with a rosin core. You can use the soldering flux on your electronic projects, which includes joints that require heavy-soldering. There is no harmful chemical in the contents. It is especially suitable for usage on smooth surfaces joint.

The paste-type soldering iron is non-corrosive and does not require cleaning. The rosin core of the solder wire is 1.67 ounces in weight. It is not hard to use since you can melt the wires using only a low temp of 361-degree F. That is not all, but the wire will provide you with excellent soldering.

Whether you want to solder or welding, the item can be useful. It makes your work quicker. You do not need to clean the residues of the flux. They can work as a guard to the joint from corrosion issues.


  • Features 63/37 solder with very low melting point for easy soldering tasks.
  • The flux does not dry out over time.
  • The flux residue actually is good against corrosion, and you don’t have to or should remove them.
  • Low volatility of the flux ensures a longer lifetime.


  • Can be hard to apply without the perfect tool.

Buying Guide

Electrical soldering requires a suitable soldering station and needs quality flux that will remove oxidization and keep the circuit steady. So, what are the factors that make a flux suitable for soldering electronics? We will discuss it here:


Are you a hobbyist who does some electrical soldering now and then? Or are you a professional who needs quality flux in a greater amount? Depending on these factors, you should always check for the amount of flux you need. There are various options when it comes to soldering flux available on the market.

Usually, a 2 oz pack of flux is the most popular option available. For heavy-duty usage, you can go for a higher amount. There are 4-12 oz packs that you can, but as a hobbyist, 2 oz packs would be good enough.


Depending on the type of soldering you will do, you should get specific soldering flux. For example, wave soldering requires you to have a specific kind of flux that has more solvent than flux material. Sticky flux is often used for reflowing process.

As each flux comes with different components, experts make sure to look at every material used and ensure whether or not the flux will be suitable for a certain PCB. Usually, rosin is the most popular material for flux. Some are made of solvent and a mix of other chemicals.

Go for Corrosion Resistant Flux

Flux made of rosin and no-clean flux are excellent when it comes to resistance against corrosion. Any electrical circuit will be damaged if corrosion appears. That’s why the flux you are using should prevent such things from happening and ensure your work’s longevity.

Easy to Remove Feature

The residue of flux is bad for your PCB. That’s why you should always get flux that can be removed easily. There are many types of flux depending on how they are cleaned. Some fluxes are water-soluble, meaning they can be cleaned with water. However, such a kind of flux may not be ideal for all work for its electric conductivity.

Make sure to also look at the packaging of the flux. See if it is giving you the right equipment that will help to apply the flux onto PCBs. These are small features that can give an edge to some products.

Frequently Asked Questions

What type of flux is used in electronics soldering?

Any random flux is not going to be suitable when it comes to electronics soldering. Experts use three types of flux that are perfect for this specific field. They are:

  • Rosin flux and its substitutes: Rosin is a hard flux lacking electric conductivity. It has excellent resistance against corrosion. Rosin flux is also removable with certain solvents.
  • Water soluble flux: Water soluble flux is a combination of thixotrope, acid, and solvent. Its residue can be removed with water, and the flux is usually used on stainless steel. Being conductive, you need to consider electrical hazards while using this.
  • No-clean flux: No clean flux includes a solvent, chemical activator, and rosin. It is used in most PCB works, and the residue of this flux isn’t conductive. Removing the residue is more complicated than other rosin substitutes.

Do you need flux to solder electronics?

When it comes to soldering, not using flux makes the job way more complicated and, in often cases, impossible. For soldering electronics, using flux is necessary because it makes the job easier.

Moreover, when oxides are present on the surface of anything you are soldering, you must use flux. Sure, you might have seen people soldering without flux, especially plumbers.

However, they often do not use flux for external soldering. But electric soldering is a different sector. In conclusion, you should use flux for electronics soldering.

Final Note

As flux is quite necessary for electronic soldering tasks, you should spend some time researching and finding out the ones that would be best for you. Take the help of our list and the buying guide mentioned above as those are experts’ opinions that’ll help you purchasing quality flux.

If you are still unaware of what kind of flux you should get, you can easily go for the SRA Rosin Paste Flux. It is a solid pick and usable for most of the electronic work you will do. We do recommend you to read each product and find out which one will be preferable according to your PCB type and soldering.

Last Updated on 1 year by Richard Boyer

  • June 28, 2022
Richard Boyer

Richard Boyer has been a professional welder for over 27 years of his life, and now he is a trainer and blogger providing critical information to anyone interested in welding. He is helping out both hobbyists, novice and professional welders to learn newer and better techniques. Read more about me

Click Here to Leave a Comment Below 1 comments
james landry

I like No Clean Tacky Soldering Flux. It is sticky. It works with both lead and lead-free solder. That makes my project go fast.


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