SKU: Mundorf-MSOLDER-SilverGold-Solder Mundorf MSolder Silver Gold Solder for Components

Mundorf M-SOLDER SilverGold Solder for Audio Components

Description
Mundorf M-SOLDER SilverGold is a premium, audiophile-grade solder specifically engineered for the high-precision assembly or repair of delicate audio components. By combining a high percentage of pure silver with a precise trace of the purest gold, this lead-free solder boosts the electrical conductivity advantages of silver while simultaneously lowering the melting point. Manufactured in Germany using metals of the absolute highest purity, it ensures outstanding signal properties, ultimate structural durability, and unmatched acoustic clarity for your hifi projects.

Key Features

• Low Odour: Formulated for a more pleasant, cleaner workshop environment.
• Optimum Processing: Fluid flow characteristics make it easy to achieve flawless, shiny joins.
• Copper Compatible: Bonds perfectly with copper PCB traces, component leads, and premium terminal connectors.
• Efficient Heat Transfer: The advanced alloy formula liquefies and flows incredibly fast upon reaching its melting point. This rapid "wetting" action allows you to complete joints in just 1 to 2 seconds, drastically reducing the overall heat exposure (dwell time) and protecting sensitive audiophile components from prolonged thermal stress.
• User & Environmentally Friendly: Standard lead-free, amine-free, diamine-free, and urea-free chemistry.
• Available Sizes: 10-gram roll (approx. 1.7 metres), 50-gram roll (approx. 8.5 metres), or 100-gram roll (approx. 17 metres).

Technical Specifications

• Diameter: 1.00 mm
• Alloy Composition: 95.5% Sn (Tin), 0.7% Cu (Copper), 3.8% Ag (Silver) enriched with a premium Au (Gold) trace.
• Metal Purity: Minimum 99.97% (typical 99.99%) purity for both the silver and gold content.
• Melting Point: 217 °C / 422 °F
• Flux Core: Special NO-CLEAN liquid flux; 2.5% flux content (Type 2.2.3 B - DIN EN 29 454.1).

How It Works & What It Does
In high-end audio systems, standard lead-based or basic lead-free utility solders can act as a bottleneck, creating tiny points of electrical resistance and signal degradation. Mundorf M-SOLDER overcomes this by utilising ultra-pure silver to maximise signal velocity and preserve microscopic audio details.

The critical addition of gold completely changes the crystal structure of the alloy as it cools, preventing the micro-cracking common in standard silver solders. It also improves the wetting ability of the liquid metal, allowing it to coat component leads smoothly. The integrated professional-grade "No-Clean" flux core cleans surface oxidation instantly upon contact, ensuring a perfect, corrosion-resistant atomic bond without leaving behind a sticky, conductive residue that requires scrubbing away later.

How to Use
Because lead-free audiophile solders have a higher melting point (217 °C) than old-school leaded versions, it is highly recommended to use a temperature-controlled soldering station set between 360 °C and 380 °C. Ensure your soldering iron tip is clean and properly tinned.

Position the audio component onto the circuit board or terminal, then apply the iron tip to heat both the component lead and the solder pad simultaneously for 1 to 2 seconds. Feed the 1.00 mm M-SOLDER wire directly onto the junction - not onto the iron tip itself - letting the premium liquid flux flow instantly around the connection. Once the joint is completely filled with a neat, smooth concave fillet, remove the solder wire first, then the iron tip. Allow the joint to cool completely naturally without moving or blowing on it, creating a rugged, vibration-proof electrical connection.