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- Kester 331 Organic Core Solder 63/37 .031 1 l...
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Item #:
13100929
Kester 331 Organic Core Solder 63/37 .031 1 lb. Spool by NTE Electronics (1)
Item #:
13100929
XCD 183
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The Kester 331 lead solder wire offers unmatched performance with a water-soluble flux core, ideal for precise soldering.
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What Stands Out
Organic Core
Utilizes organic core technology, offering cleaner flux for reduced oxidation and enhanced soldering quality, making it ideal for electronics where performance and reliability are critical.
Alloy Composition
Features a 63/37 tin-lead alloy, providing a low melting point and excellent wetting characteristics, ensuring strong and durable joints for various electronic applications.
Convenient Spool Size
Comes in a manageable 1 lb. spool, perfect for hobbyists and professionals alike, ensuring easy handling and storage while delivering ample solder for multiple projects.
Product Details
- Kester 331 Organic Core Solder 6337 .031 1 lb. Spool by NTE Electronics 1
- Contains 63% Tin / 37% Lead and a water-soluble flux core
- Diameter: 0.031 Inch (0.80mm) with a flux of 331 @ 3.3%
- Melting point: +361 F, Core type: 66, Type: Water-Soluble
- Residue can be completely removed with a simple heated water rinse
- Manufactured in the United States by Kester
Who Should Buy?
-
Hobbyist Electronics
Ideal for electronics hobbyists looking for reliable solder for DIY projects and repairs.
-
Professional Technicians
Perfect for technicians needing dependable solder for various electronic assembly tasks and repairs.
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Circuit Board Assembly
Suitable for PCB assembly, allowing for strong, effective solder joints on electronic components.
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Large Scale Production
May not be efficient for high volume production settings requiring faster soldering processes.
Product Description
Kester 331 Organic Core Solder 63/37 .031 1 lb. Spool by NTE Electronics (1)
About This Item
Introducing the Kester 331 Organic Core Solder 6337 .031 1 lb. Spool by NTE Electronics - the ultimate soldering solution for all your electronic projects. Whether you're a beginner or a professional, this solder is perfect for any level of expertise.
With its high-quality composition, it ensures a seamless and efficient soldering process every time. At Ubuy, we offer the best prices on the market for this top-notch NTE Electronics solder. We understand the importance of quality and affordability, and that's why we strive to provide the best value for your money.
Not only does this solder deliver exceptional performance, but it also meets the highest safety standards. We prioritize your safety, which is why we offer a wide range of soldering equipment and tools, ensuring that you have everything you need to complete your projects with ease and precision. For beginners looking to learn the art of soldering, we have an extensive collection of tutorials and guides that will walk you through the process step by step.
From soldering techniques for printed circuit boards to soldering accessories and flux, we have you covered. If you're a professional looking for a reliable soldering station, look no further. Our soldering station options are designed to meet the demands of even the most intricate projects, providing you with the precision and control you need.
With our online store, you can easily buy solder online and have it delivered right to your doorstep. We understand the importance of convenience, so we've made the shopping experience as seamless as possible. And for those concerned about the environment, our lead-free solder options are the perfect choice.
You no longer have to compromise on performance to make an eco-friendly choice. Upgrade your soldering game today with the Kester 331 Organic Core Solder 6337 .031 1 lb. Spool by NTE Electronics.
Experience the difference in quality and performance for yourself. Shop now at Ubuy!.
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is the melting point of Kester 331 lead solder wire?
Answer: The melting point is +361 F. -
Question:
Is the solder wire water-soluble?
Answer: Yes, it has a water-soluble flux core. -
Question:
What is the total composition of the lead solder wire?
Answer: It is composed of 63% Tin and 37% Lead.
LED Group Buy Solder Editorial Review
The Kester 331 Organic Core Solder 63/37 has received overwhelmingly positive reviews from users, particularly praising its performance and ease of use for electronic repairs and modifications. Many customers have expressed satisfaction with its effective water-soluble flux, which provides a significant advantage over traditional rosin-core solder. Customers highlight the solder's aggressive halide flux, noting its ability to penetrate oxidation, making it ideal for repairing older or oxidized electronics, such as synthesizers and industrial machinery. The cleanup process is notably easier, as users can simply wash the residue off with water, avoiding the fuss of using solvents required for rosin-core solders. This feature has been emphasized by several long-time users who transitioned to the Kester 331 after years of using other types of solder. Many reviews mentioned the 63/37 composition as a key improvement over 60/40 solder, with benefits such as lower melting points, faster setting times, and ultimately a more efficient working experience. Users report being more productive and able to complete projects in less time. However, there is a notable caution regarding the need to thoroughly wash off the flux after soldering, as it can be corrosive if left on the board for an extended period. Users are advised to be especially cautious when working with surface-mounted components, as the flux may be challenging to clean completely from underneath them. In summary, the Kester 331 Organic Core Solder 63/37 has been described as a superior product, especially for those engaging in intricate electronics work. Its ease of use, effective cleaning method, and potential for improving work efficiency make it a highly recommended choice among both novices and seasoned professionals in electronics repair. **
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Pros
- Easy to use and works well for both repairs and PCB assembly.
- Water-soluble flux simplifies cleanup.
- Aggressive halide flux effectively removes oxidation.
- 63/37 composition enhances melting point and setting speed compared to 60/40.
- Suitable for small components.
Cons
- Requires thorough cleaning of the flux post-soldering to prevent corrosion.
Platform Trust & Buyer Confidence
MA
Mohammad
Verified buyer
“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
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Chitra
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“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”
22-Jul-26 · via Trustpilot
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kund
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“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”
23-Jul-26 · via Trustpilot
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Onesi
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“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”
22 July 2026 · via Trustpilot
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SAO JOHN
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“Ubuy is a great online platform to buy stuff. Reliable, fast delivery time and great value for money. I've been using Ubuy online shopping platform for three years now and will continue to do so.”
23 July 2026 · via Trustpilot
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Features & Benefits
- High-quality Kester 331 lead solder wire.
- Melts at a temperature of +361 F.
- Water-soluble flux core for easy use.
- Composition: 63% Tin / 37% Lead.
- Diameter of 0.031 inches (0.80mm).
- Residue can be easily removed with heated water rinse.
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