High Purity Indium Ingots for Electronics, Semiconductors, ITO Targets and Low Temperature Applications

Firebird Optics supplies high purity 4N5 Indium ingots (99.995% minimum purity) for demanding industrial, research and manufacturing applications. Indium is an exceptionally soft, ductile metal that offers outstanding thermal and electrical conductivity, excellent cold welding characteristics, and a remarkably low melting point of 156.6°C.

Our indium ingots are manufactured to strict purity standards, making them ideal for producing indium tin oxide (ITO) targets, semiconductor materials, specialty solders, vacuum seals, low melting alloys, and advanced electronic components.

Whether you require small quantities for laboratory research or production volumes for manufacturing, Firebird Optics can provide high quality indium ingots with consistent chemistry and reliable performance.

Specifications

Maximum Impurity Levels

High Purity Indium Ingots for Advanced Manufacturing

Indium is a specialty metal valued for its unique combination of softness, ductility, conductivity, and low melting temperature. Unlike many engineering metals, indium remains highly workable at room temperature and readily forms vacuum-tight seals through cold welding. These characteristics have made it an essential material across electronics, semiconductor manufacturing, aerospace, and research laboratories.

One of the largest uses for high purity indium is the production of Indium Tin Oxide (ITO), the transparent conductive coating found in LCD displays, touchscreens, OLED devices, and photovoltaic technologies. High purity indium is also used to manufacture compound semiconductors, infrared detectors, laser components, and specialty solders where contamination must be kept to an absolute minimum.

Because our 4N5 indium contains extremely low impurity levels, it delivers reliable consistency for precision manufacturing processes where material quality directly impacts final product performance.

Key Features

99.995% Minimum Purity

High purity 4N5 indium suitable for demanding industrial and research applications.

Excellent Cold Welding Properties

Indium naturally bonds to many metallic surfaces without requiring heat, making it an outstanding material for vacuum sealing applications.

Exceptional Ductility

One of the softest commercially available metals, indium can be formed, machined and shaped with minimal effort.

Low Melting Point

With a melting temperature of only 156.6°C, indium is widely used in specialty solders, fusible alloys and thermal interface materials.

Reliable Material Consistency

Strict impurity controls help ensure repeatable performance for semiconductor fabrication, electronics manufacturing and optical applications.

Applications of Indium Ingots

Indium Tin Oxide (ITO) Manufacturing

The largest commercial use of indium is producing ITO sputtering targets used to manufacture:

• LCD displays

• OLED displays

• Touchscreens

• Smart glass

• Transparent conductive coatings

Semiconductor Manufacturing

High purity indium serves as a critical raw material for advanced semiconductor compounds used in:

• Infrared detectors

• Photonic devices

• Laser systems

• Optoelectronics

• High-speed communications

Low Temperature Solders

Indium's low melting point makes it ideal for soldering heat-sensitive electronic assemblies while minimizing thermal stress on components.

Vacuum and Cryogenic Seals

Because indium remains soft and forms airtight seals under compression, it is widely used in:

• Vacuum chambers

• Cryogenic equipment

• Scientific instrumentation

• Ultra-high vacuum systems

Specialty Alloys

Indium is incorporated into numerous low melting alloys and thermal management materials used throughout aerospace, electronics and industrial manufacturing.