---
product_id: 57893475
title: "MAIYUM 63-37 Rosin Core Solder Wire 0.8mm 50g Tin Lead Electrical Soldering | Low melting rosin flux, clean welds, non-corrosive residue, fits PCB repair, electronics DIY soldering"
brand: "maiyum"
price: "$19.64"
currency: USD
in_stock: true
category: "Maiyum"
url: https://www.desertcart.us/products/57893475-maiyum-63-37-rosin-core-solder-wire-0-8mm-50g
store_origin: US
region: United States of America
---

# Smooth, fast solder flow Low melting point 183°C 0.8mm precision wire diameter MAIYUM 63-37 Rosin Core Solder Wire 0.8mm 50g Tin Lead Electrical Soldering | Low melting rosin flux, clean welds, non-corrosive residue, fits PCB repair, electronics DIY soldering

**Brand:** maiyum
**Price:** $19.64
**Availability:** ✅ In Stock

## Summary

> ⚡ Solder smarter, not harder — join the pros who never settle for less!

## Quick Answers

- **What is this?** MAIYUM 63-37 Rosin Core Solder Wire 0.8mm 50g Tin Lead Electrical Soldering | Low melting rosin flux, clean welds, non-corrosive residue, fits PCB repair, electronics DIY soldering by maiyum
- **How much does it cost?** $19.64 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/57893475-maiyum-63-37-rosin-core-solder-wire-0-8mm-50g)

## Best For

- maiyum enthusiasts

## Why This Product

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

## Key Features

- • **Compact & Portable:** 50g spool fits perfectly in your toolkit or pocket for on-the-go repairs
- • **Fast-Flow Rosin Core:** 1.8% flux content ensures smooth, reliable solder flow every time
- • **Optimal Melting Point:** Melts at 361°F (183°C) for quick, strong connections without overheating
- • **Trusted Industry Favorite:** #1 Best Seller in Solder with 4.6-star rating from 22,000+ pros
- • **Effortless Precision Soldering:** 0.8mm diameter for detailed, clean joints

## Overview

The MAIYUM 63-37 Tin Lead Rosin Core Solder Wire is a professional-grade electrical soldering wire featuring a precise 0.8mm diameter and 1.8% flux content for smooth, fast solder flow. With a low melting point of 183°C, it enables quick, strong solder joints ideal for circuit boards, DIY projects, and electronic repairs. Compact and highly rated, this 50g spool is a top choice among industrial and scientific users.

## Description

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

## Features

- 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)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B075WB98FJ |
| Best Sellers Rank | #196 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Solder |
| Color | 0.8mm 50g |
| Customer Reviews | 4.6 4.6 out of 5 stars (22,303) |
| Date First Available | September 24, 2017 |
| Item Package Quantity | 1 |
| Item Weight | 1.92 ounces |
| Item model number | JF850 |
| Manufacturer | Shenzhen Joycefook Technology Co., Ltd |
| Material | tin |
| Part Number | JF850 |
| Product Dimensions | 2.17 x 1.18 x 2.17 inches |
| Size | 0.8mm 50g |

## Images

![MAIYUM 63-37 Rosin Core Solder Wire 0.8mm 50g Tin Lead Electrical Soldering | Low melting rosin flux, clean welds, non-corrosive residue, fits PCB repair, electronics DIY soldering - Image 1](https://m.media-amazon.com/images/I/71vPhY4AaWL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: What kind of soldiers can work for bikes**
A: This answer is for those who want to solder aluminum tubing, to construct bike frames.  The quick answer is no.  Maiyum solder is for electronics.  The solder you want can be found by searching for this in Amazon:  50 Pieces Aluminum Welding Rods 0.08 x 8 Inch Universal Low Temperature Welding Cored Wire Brazing Rod Tube for Electric Power, Drill Tap Polish and Paint .   You will need a torch that can burn MAPP gas, and the proper PPE such as welding gloves and a fixed face shield.

**Q: How do you solder. Do you put the solder on the iron than run over the wire or it should just melt on the wire without the iron melting the solder?**
A: Solder follows heat, but it's important not to burn off all of the flux before it gets to where it needs to go (flux removes oxidation, which allows the solder to make a strong molecular bond with the surface). Putting solder on the tip of the iron first is a guaranteed way to burn off the flux in the solder before you put it where it needs to go. 

I typically touch the iron to where I want the solder to go, heat the connection, and then bring the solder in to either touch the same joint. On wires the iron will touch the opposite side as the solder - so the solder flows through toward the heat of the iron. In some applications the connection is too small, so I touch the solder to the iron as close as possible to the connection.

If I ever need to apply solder to the iron first and then bring it over to a connection, I use a flux pen or paste flux to coat the connection before soldering it.

**Q: Is this stuff magnetic or will it attract magnet?**
A: This solder wire has no magnetic properties, but since it contains tin it is a paramagnetic material.  The attraction to magnets is very low and should pose no problems when used in common electronic applications.

**Q: Is it dual voltage?**
A: This is solder with flux core. Voltage has nothing to do with it.

## Frequently Bought Together

- MAIYUM 63-37 Tin Lead Rosin Core Solder Wire for Electrical Soldering (0.8mm 50g)
- 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)
- Fanttik T1 Max Soldering Iron Kit, Cordless Soldering Iron, 7 Seconds Fast Heating(390°F-840℉), Auto Sleep, 4 Precision Soldering Tips(C210), 360° Swivel Stand, Soldering Iron for Precision Repair

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-08-02*