---
product_id: 496064210
title: "Wonderway Sn42/Bi58 T4 Lead Free Solder Paste No Clean, 138℃ Melting Point (20g)"
brand: "wonderway"
price: "€ 12.76"
currency: EUR
in_stock: true
reviews_count: 13
category: "Wonderway"
url: https://www.desertcart.ie/products/496064210-wonderway-sn42-bi58-t4-lead-free-solder-paste-no-clean
store_origin: IE
region: Ireland
---

# No-clean, minimal residue 138℃ low melting point 42% Tin / 58% Bismuth alloy Wonderway Sn42/Bi58 T4 Lead Free Solder Paste No Clean, 138℃ Melting Point (20g)

**Brand:** wonderway
**Price:** € 12.76
**Availability:** ✅ In Stock

## Summary

> ⚡ Elevate your solder game with precision and eco-friendly flow!

## Quick Answers

- **What is this?** Wonderway Sn42/Bi58 T4 Lead Free Solder Paste No Clean, 138℃ Melting Point (20g) by wonderway
- **How much does it cost?** € 12.76 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/496064210-wonderway-sn42-bi58-t4-lead-free-solder-paste-no-clean)

## Best For

- wonderway enthusiasts

## Why This Product

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

## Key Features

- • **No-Clean Formula:** Leaves bright, residue-free joints—skip the cleanup and save time.
- • **Versatile Industrial Use:** Trusted for circuit boards, ICs, phones, TVs, and household appliances.
- • **Lead-Free Alloy Composition:** Eco-conscious 42% Tin and 58% Bismuth blend for safer, cleaner soldering.
- • **Precision Melting at 138℃:** Ideal for delicate SMD and rework projects, reducing thermal stress.
- • **Strong Viscosity for Smooth Flow:** Engineered for consistent paste application with zero waste during soldering.

## Overview

Wonderway Sn42/Bi58 T4 solder paste offers a lead-free, low melting point (138℃) alloy with a no-clean formula and strong viscosity, ensuring smooth, bright, and residue-free solder joints. Perfect for professional-grade electronics assembly and rework across a wide range of devices.

## Description

Wonderway Sn42/Bi58 T4 Lead Free Solder Paste No Clean, 138℃ Melting Point (20g) - desertcart.com

Review: Great Quality Solder Paste – Flows Smoothly and Works Perfectly! - I’ve been using the Wonderway Sn42/Bi58 T4 lead-free solder paste, and it’s easily one of the best budget-friendly pastes I’ve tried. The 138°C low melting point makes it perfect for delicate components, SMD soldering, and rework projects. It flows evenly, wets the pads nicely, and leaves very little residue — the no-clean formula really lives up to its name.
Review: Excellent solder, smooth and easy to work with - This solder worked really well for my projects. It melts smoothly and flowed nicely, which made my joints clean and easy to solder. I also like that it’s lead-free — it gives me extra peace of mind when working in shared spaces. The thickness (Sn42/Bi58) felt just right for both small and medium-sized connections. Overall, I’m very happy with this solder and would buy it again.

## Features

- Paste Content: Alloy Tin 42% Bi58% , Sloder Flux Content: 10.5%
- Product Parameters: Total Weight: 29g, Net Weight Of Paste: 20g
- Paste Features: No Clean, Strong Viscosity, Bright Welding Point
- Product Advantages: Pushing design for Smoother Flowing, No Waste During Welding
- Applications: Widely Used In Circuit Board, IC, Phone, TV and Other Household Appliances and Industrial Equipment

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BLSKZ6W1 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #3,301 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #12 in Soldering Parts & Accessories |
| Customer Reviews | 4.6 4.6 out of 5 stars (931) |
| Date First Available | November 8, 2022 |
| Item Package Quantity | 1 |
| Item Weight | 1.44 ounces |
| Item model number | SP-Sn42Bi58 |
| Manufacturer | wonderway |
| Material | Solder paste |
| Part Number | SP-20G-Sn42Bi58 |
| Power Source | fuel_powered |
| Product Dimensions | 3.73 x 1.35 x 0.92 inches |
| Size | T4 20g |

## Images

![Wonderway Sn42/Bi58 T4 Lead Free Solder Paste No Clean, 138℃ Melting Point (20g) - Image 1](https://m.media-amazon.com/images/I/71oRBtkBdoL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great Quality Solder Paste – Flows Smoothly and Works Perfectly!
*by M***N on November 4, 2025*

I’ve been using the Wonderway Sn42/Bi58 T4 lead-free solder paste, and it’s easily one of the best budget-friendly pastes I’ve tried. The 138°C low melting point makes it perfect for delicate components, SMD soldering, and rework projects. It flows evenly, wets the pads nicely, and leaves very little residue — the no-clean formula really lives up to its name.

### ⭐⭐⭐⭐⭐ Excellent solder, smooth and easy to work with
*by J***N on December 26, 2025*

This solder worked really well for my projects. It melts smoothly and flowed nicely, which made my joints clean and easy to solder. I also like that it’s lead-free — it gives me extra peace of mind when working in shared spaces. The thickness (Sn42/Bi58) felt just right for both small and medium-sized connections. Overall, I’m very happy with this solder and would buy it again.

### ⭐⭐⭐⭐⭐ Very good stuff, tube will last a long time for my purposes
*by L***R on September 14, 2025*

Excellent stuff, good value as not very much is needed and pretty easy to use or clean up. I bought this to assist with removing solder on controller pcb's so that I could do stick swaps. I do not use this for the solder to hold the new sticks in place I use 63-37. What I use this for is to add a little to the globs of factory solder to help reduce the melting point as most use non leaded these days. If you are doing it for this purpose you do not need very much a small dot and you are good. Then just a touch of heat to melt the solders together and then remove, very easy and works great.

## Frequently Bought Together

- Wonderway Sn42/Bi58 T4 Lead Free Solder Paste No Clean, 138℃ Melting Point (20g)
- 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
- 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

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-03-21*