--- product_id: 149880572 title: "Ultra-Thin Solder Wire 0.01in 0.3mm Rosin Core Flux 2.5, Lead Free Solder Wire Sn99 Ag0.3 Cu0.7 Flow 50g Electronics Soldering Electric Solder" brand: "enersystec" price: "AR$37846" currency: ARS in_stock: true category: "Enersystec" url: https://www.desertcart.com.ar/products/149880572-ultra-thin-solder-wire-0-01in-0-3mm-rosin-core store_origin: AR region: Argentina --- # Sn99 Ag0.3 Cu0.7 high conductivity alloy 419°F fast melting point 0.01in ultra-thin precision Ultra-Thin Solder Wire 0.01in 0.3mm Rosin Core Flux 2.5, Lead Free Solder Wire Sn99 Ag0.3 Cu0.7 Flow 50g Electronics Soldering Electric Solder **Brand:** enersystec **Price:** AR$37846 **Availability:** ✅ In Stock ## Summary > ⚡ Solder Smarter, Not Harder — The Ultra-Thin Wire That Powers Precision! ## Quick Answers - **What is this?** Ultra-Thin Solder Wire 0.01in 0.3mm Rosin Core Flux 2.5, Lead Free Solder Wire Sn99 Ag0.3 Cu0.7 Flow 50g Electronics Soldering Electric Solder by enersystec - **How much does it cost?** AR$37846 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/149880572-ultra-thin-solder-wire-0-01in-0-3mm-rosin-core) ## Best For - enersystec enthusiasts ## Why This Product - Trusted enersystec brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Rosin Core Flux 2.5%:** Optimized flux content guarantees clean, strong bonds with minimal residue. - • **Premium Lead-Free Alloy:** Sn99 Ag0.3 Cu0.7 composition delivers superior conductivity and reliability. - • **Rapid Melt, Effortless Flow:** Melts quickly at 419°F ensuring smooth, efficient solder joints every time. - • **Versatile for Pros & DIYers:** Ideal for electronics repair, manufacturing, and intricate soldering projects. - • **Pinpoint Precision for Tiny SMD Pads:** Ultra-thin 0.01in diameter wire designed for flawless micro soldering. ## Overview This 50g spool of ultra-thin 0.01in (0.3mm) lead-free solder wire features a high-performance Sn99 Ag0.3 Cu0.7 alloy with 2.5% rosin core flux. Melting at a low 419°F, it ensures fast, clean soldering ideal for delicate SMD pads and fine electronics work, making it the go-to choice for professionals and hobbyists seeking precision and reliability. ## Description Ultra-thin 0.01inch solder diameter for tiny SMD pad Rosin Core Solder Wire Delivery Item: 1pack x Lead Free Solder Wire 0.01in 0.11lb. 0.3mm Solder Wire SPEC: > Solder Wire Diameter: 0.01inch or 0.3mm > Weight: 0.11lb. or 50g > Alloy: Sn99 Ag0.3 Cu0.7 > Flux: 2.5 > Melting Point temperature: 419 Degrees Fahrenheit ## Features - ULTRA-THIN- the solder wire diameter is just 0.01inch, designed to solder the tiny component, just enough to add enough solder on those small MSD pads - LOW MELTING POINT- solder fast melting at 419F ( 217 Deg.C), suitable all soldering tools, easy for soldering, fast melting solder wire 0.3mm gauge - IMPROVED SOLDER- this 0.3mm solder wire contented alloy materials Sn99 Ag0.3 Cu0.7, provides excellent conductivity, eliminate soldering issue, reduce labor cost - APPLICATION- good for fine solder work, soldering for electronics equipment, connectors, whatever for electronics repair, diy, manufacturing or soldering study, this fine solder wire is good for use - LEAD FREE- Unlead solder, high performance for electric soldering project, unlead solder wire is good for use at home or office, 0.01 inch diameter solder wire is your right choice for small soldering ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07VT4MLD1 | | Best Sellers Rank | #42,841 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #91 in Solder | | Color | Silver | | Customer Reviews | 4.7 4.7 out of 5 stars (592) | | Date First Available | July 29, 2019 | | Included Components | 0.3mm solder wire LeadFree | | Item Package Quantity | 1 | | Item Weight | 1.76 ounces | | Item model number | EST-SW35-0.3LDF50 | | Manufacturer | Enersystec Electric Co.,Ltd | | Material | lead | | Part Number | EST-SW35-0.3LDF50 | | Power Source | ac | | Product Dimensions | 1.1 x 1.1 x 2.17 inches | | Size | Thin Gauge | | Special Features | 1. Ultra-thin 0.01inch diameter, Rosin Core, Flux 2.5%, Flow well, Lead Free Solder Wire | ## Images ![Ultra-Thin Solder Wire 0.01in 0.3mm Rosin Core Flux 2.5, Lead Free Solder Wire Sn99 Ag0.3 Cu0.7 Flow 50g Electronics Soldering Electric Solder - Image 1](https://m.media-amazon.com/images/I/61ra778d57S.jpg) ## Questions & Answers **Q: Can it be used on brass** A: It is ok to use this solder for the brass, But this solder is very fine, the diameter is 0.01 in / 0.3mm solder wire, If you soldering a big brass, you should use larger solder wire, such as 1.0mm or 1.5mm solder wire **Q: does this can be used to solder aluminium wires ?** A: Yes, this fine electrical solder wire can be used to soldering the aluminum wires, The solder wire diameter is 0.01inch / 0.3mm, very thin solder wire, It is mainly for electronics soldering for components or wires **Q: Can this be coiled around toothpicks without straightening back?** A: Yes. It will probably relax some. **Q: Can I use this with soldering iron to repair keychain?** A: This is super thin that is ideal for working of soldering on motherboards. May need to find a larger size solder wire. ## Frequently Bought Together - Ultra-Thin Solder Wire 0.01in 0.3mm Rosin Core Flux 2.5, Lead Free Solder Wire Sn99 Ag0.3 Cu0.7 Flow 50g Electronics Soldering Electric Solder - Lesnow solder wick braid 10ft Length Desoldering Wick Braid Remover Tool Solder Sucker 1 piece No-Clean soldering Wick Wire Roll and Disassemble Electrical Components - 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.ar/products/149880572-ultra-thin-solder-wire-0-01in-0-3mm-rosin-core](https://www.desertcart.com.ar/products/149880572-ultra-thin-solder-wire-0-01in-0-3mm-rosin-core) --- *Product available on Desertcart Argentina* *Store origin: AR* *Last updated: 2026-08-23*