Lead-Free High-Temperature Solder Bar

The SN99.3Cu0.7 Lead-Free High-Temperature Solder Bar is a tin-copper alloy solder designed for high-temperature soldering processes in electronic manufacturing. With a melting point of 225–229°C and a recommended operating temperature of 380–500°C, it provides stable soldering performance for wave soldering, hot dip soldering, and tinning applications.

During high-temperature operation, the solder maintains a bright liquid surface with low dross generation. This helps reduce the need for frequent dross removal during production, allowing operators to maintain a cleaner solder bath and improve overall production efficiency.

Excellent Workability and High Production Efficiency

In high-volume electronic manufacturing, soldering efficiency directly affects production capacity. SN99.3Cu0.7 is formulated to provide excellent workability and stable performance during continuous soldering operations.

Its bright molten surface helps reduce frequent surface scraping, while the low-dross characteristic minimizes interruptions caused by solder waste. This allows production lines to operate more smoothly and can help manufacturers increase output while reducing unnecessary material consumption.

The solder also provides good wettability, helping molten solder spread effectively across component surfaces and soldering areas.

Bright and Smooth Solder Joints

SN99.3Cu0.7 provides reliable soldering performance with a bright and smooth appearance after tinning. Tinned pins can achieve a clean surface with good visual quality, making the product suitable for electronic components where both soldering reliability and appearance are important.

The alloy is particularly suitable for applications requiring consistent tinning results, including components with enameled wire.

During proper operation, components are easy to tin, while minimal dross adhesion to the base plate helps maintain a cleaner working environment and simplifies subsequent production handling.

Low Dross Generation Helps Reduce Material Waste

One of the key advantages of this lead-free solder bar is its low dross generation.

Excessive dross can increase solder consumption, require frequent furnace cleaning, and interrupt production. SN99.3Cu0.7 is designed to generate less dross during high-temperature operation, helping manufacturers reduce material waste and improve solder utilization.

For factories operating solder furnaces continuously, lower dross generation can also contribute to easier process management and more efficient production.

Suitable for Electronic Component Tinning

SN99.3Cu0.7 is suitable for a variety of electronic soldering and tinning applications. It can be used for:

• Wave soldering

• Hot dip soldering

• Electronic component tinning

• Enameled wire tinning

• Transformer manufacturing

• Inductor manufacturing

• Coil manufacturing

• Relay manufacturing

• Degaussing coil manufacturing

The alloy's good wettability and stable molten performance make it suitable for electronic components that require uniform and reliable tinning.

Product Specifications

Key Product Features

Lead-Free Composition
SN99.3Cu0.7 is a lead-free solder alloy suitable for electronic manufacturing applications where compliance with environmental requirements is important.

Bright Molten Surface
The solder maintains a bright liquid surface during high-temperature operation, helping reduce the need for frequent dross scraping.

Low Dross Generation
Reduced dross formation helps minimize solder waste and can contribute to lower material consumption during continuous production.

Good Wettability
The molten solder spreads effectively over component surfaces, supporting smooth and consistent tinning.

Smooth Tinned Surface
Tinned pins can achieve a bright and smooth finish with good visual appearance.

Easy Component Tinning
The alloy provides good workability for tinning electronic components and enameled wires.

Reliable Soldering Performance
It is designed to provide bright and reliable solder joints when used under appropriate process conditions.

Designed for High-Temperature Soldering Processes

With an operating temperature range of 380–500°C, SN99.3Cu0.7 is suitable for high-temperature soldering equipment and solder furnaces used in electronic component manufacturing.

For best results, actual soldering temperature and process parameters should be adjusted according to the component material, equipment configuration, production speed, and specific application requirements.

A Practical Lead-Free Solder Solution for Manufacturers

For electronic component manufacturers looking for a lead-free solder bar with good wettability, low dross generation, and efficient production performance, SN99.3Cu0.7 provides a practical solution.

Its combination of a bright molten surface, easy tinning, minimal dross adhesion, smooth tinned pins, and stable high-temperature performance makes it suitable for demanding industrial soldering environments.

From transformers and inductors to coils and relays, SN99.3Cu0.7 can support consistent tinning and soldering operations while helping manufacturers improve production efficiency and reduce unnecessary solder waste.

For bulk orders, technical requirements, packaging requirements, or application-specific recommendations, manufacturers and distributors can contact the supplier for further information.