---
product_id: 451212314
title: "Solder Wire,0.8mm Soldering Wire Lead Free Sn99.3 Cu0.7 with Rosin Core for Electronic Electrical Soldering Components Repair and DIY. (20, Grams) Net 15g"
brand: "sumwitum"
price: "€ 9.45"
currency: EUR
in_stock: true
reviews_count: 13
category: "Sumwitum"
url: https://www.desertcart.pt/products/451212314-solder-wire-0-8mm-soldering-wire-lead-free-sn99-3
store_origin: PT
region: Portugal
---

# 185-190°C optimal melting point 0.8mm precision diameter Lead-free, eco-safe alloy Solder Wire,0.8mm Soldering Wire Lead Free Sn99.3 Cu0.7 with Rosin Core for Electronic Electrical Soldering Components Repair and DIY. (20, Grams) Net 15g

**Brand:** sumwitum
**Price:** € 9.45
**Availability:** ✅ In Stock

## Summary

> ⚡ Solder smarter, not harder—lead-free precision for the modern maker!

## Quick Answers

- **What is this?** Solder Wire,0.8mm Soldering Wire Lead Free Sn99.3 Cu0.7 with Rosin Core for Electronic Electrical Soldering Components Repair and DIY. (20, Grams) Net 15g by sumwitum
- **How much does it cost?** € 9.45 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/451212314-solder-wire-0-8mm-soldering-wire-lead-free-sn99-3)

## Best For

- sumwitum enthusiasts

## Why This Product

- Trusted sumwitum brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact & Portable:** Small 20g pack fits in your pocket—ready for on-the-go fixes and DIY mastery
- • **Rosin Core Flux Power:** Built-in flux boosts solder flow and joint strength—no extra cleaning needed
- • **Eco-Friendly & Lead-Free:** Sn99.3 Cu0.7 alloy ensures safe, sustainable repairs without toxic lead
- • **Effortless Melting Point:** Melts cleanly at 185-190°C for smooth, efficient workflow
- • **Precision Perfect Diameter:** 0.8mm wire for flawless, detailed soldering every time

## Overview

This 0.8mm lead-free solder wire features a high-purity Sn99.3 Cu0.7 alloy with a rosin core flux, delivering excellent electrical and thermal conductivity. Designed for professional and DIY electronic repairs, it melts cleanly at 185-190°C, creating strong, bright joints without toxic lead. Its compact 20g packaging makes it ultra-portable, perfect for quick fixes on the move.

## Description

Product Features: 1.This solder wire is synthesized from Tin-Cu rosin, we ensure that the tin content is 99.3%, lead free. 2.Less welding slag, bright solder joints. 3.Solder has good wettability, Strong solder joint. 4.With rosin flux, good fluidity, avoid cleaning after welding. Product Parameters: 1.Materials: Sn99.3%,Cu0.7%,Flux Rosin: 1.8-2% 2.Dimensions:5.5 x 5.5 x 2.9 cm/ 2.17 x 2.17 x 1.14 inches 3.Weight:20g 4.Packaging Size:5.5 x 5.5 x 2.9 cm/ 2.17 x 2.17 x 1.2 inches

Review: Good item - Good soldier flows nicely
Review: Great value for the price! - Well packaged and works as intended. Well priced and very easy to use.

## Features

- Causes serious eye damage.
- May cause an allergic skin reaction.
- ★【Lead-free Solder Wire】lead-free solder wire with rosin core;Our solder wire is good solder ability both in electrical conductivity and thermal conductivity; The solder wire is made of high-quality materials, free of impurities, safe and reliable, and can be used for a long time.
- ★【Parameters】Electrical solder wire diameter is 0.032 inch (0.8mm), Flux content 2%, Net weight 12g Using matches can be melted and welded ,so that raise welding efficiency and quality. melting point range: 185°C - 190°C (365°F - 374°F)
- ★【Small Pack Design】Weld wire adopts a small design. You can put the solder wire pack on your pocket and Easy to carry and use.
- ★【Widely Applications】The alloy soldering wire is widely used in the repair of household appliances, you can repair household items such as Electronic Electrical / cell phone/headset / Remotes/ radio / audio / TV / Toys / circuit board / and other electrical devices.
- ★【After-sales service】 If you encounter any problems with our products, please contact us at any time, all your doubts will be replied in 24 hours.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B3D8NLMB |
| Batteries Required? | No |
| Best Sellers Rank | 5,209 in DIY & Tools ( See Top 100 in DIY & Tools ) 4 in Solder |
| Colour | 20 G |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,728) |
| Date First Available | 7 Jun. 2022 |
| Included Components | solder wire |
| Item Weight | 20 g |
| Item model number | SW003 |
| Manufacturer | Sumwitum-UK |
| Package Dimensions | 10.7 x 9.6 x 2.5 cm; 20 g |
| Part Number | SW003 |
| Power Source | ac |

## Images

![Solder Wire,0.8mm Soldering Wire Lead Free Sn99.3 Cu0.7 with Rosin Core for Electronic Electrical Soldering Components Repair and DIY. (20, Grams) Net 15g - Image 1](https://m.media-amazon.com/images/I/61Z1CHwGRwL.jpg)

## Questions & Answers

**Q: Is this this the  correct sodder to use when working on circuit boards**
A: I use it for wiring small switches on my model railway. It's fairly thin so doesn't take many seconds to melt. I would think it's OK for soldering components on a circuit board.

**Q: do you still need to use flux with this?**
A: Hello dear friend, this does not need a flux, direct use of fire can be.

**Q: can i use this to repair a sterling silver ring?**
A: I think the binding force on soldering is too weak for ring. This is usually for electronic components assembly.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good item
*by P***L on 17 November 2025*

Good soldier flows nicely

### ⭐⭐⭐⭐⭐ Great value for the price!
*by D***. on 18 September 2025*

Well packaged and works as intended. Well priced and very easy to use.

### ⭐⭐⭐⭐ Good product and SerGood product and Servicevice
*by A***E on 16 November 2025*

Good producGood product and Servicet and Service

## Frequently Bought Together

- Solder Wire,0.8mm Soldering Wire Lead Free Sn99.3 Cu0.7 with Rosin Core for Electronic Electrical Soldering Components Repair and DIY. (20g)
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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-03-13*