Solder Alloys

Solder Alloys

Since our founding in 1934, Indium Corporation has been the world’s leader in specialty solders and alloy development. Our R&D staff, including several Ph.D. metallurgists, work with our core set of metals to develop alloys that will address the latest soldering and sealing challenges.

Introducing Two New Alloys Solutions

Consistent with our reputation for developing innovative new alloys, Indium Corporation has introduced two new alloys solutions:

Durafuse LT

Durafuse LT is a two temperature alloy system designed to provide high-reliability in low-temperature applications. Durafuse LT provides improved drop shock resilience, outclassing bismuth-tin (BiSn) or bismuth-tin-silver (BiSnAg) alloys, and performing better than SAC305 with optimum process setup. Durafuse LT is made up of a low-melting indium-containing alloy and a higher-melting SAC alloy. The required peak reflow temperature is under 210°C. The SnInAg alloy initiates joint fusion while the SAC alloy provides enhanced strength and durability. Durafuse LT is ideal for high-reliability applications which utilize thermally sensitive components.

Durafuse LT Features:
  • Excellent drop shock reliability – comparable to SAC
  • Reflow below 210°C
  • Melting temperature above 180°C
  • Good mechanical shear strength up to 150-165°C
  • Good thermal and electrical conductivity

For more information about Durafuse LT, please download our product data sheet.

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Indalloy®292 is an alloy engineered to provide advanced reliability for high-performance applications. It has excellent thermal cycling performance at -40/150°C conditions, high shear strength, and low solder joint cracking. The elimination of pinholes improves joint appearance.

When paired with Indium8.9HF solder paste, Indalloy®292 provides outstanding printability, stability, and enhanced SIR. For more information about Indalloy®292 with Indium8.9HF, please download our product data sheet.

There are also other metals that can be used in these alloys:

  • Antimony (Sb)
  • Silver (Ag)
  • Germanium (Ge)
  • Cadmium (Cd)
  • Copper (Cu)
  • Zinc (Zn)

The first criteria for choosing a solder is usually the melting temperature, but our solder alloy selector guide also allows you to sort by operational temperature and process temperature. Additionally, you can sort you alloy selection by Pb-free and/or Cd-free alloys, as well as by alloys that are RoHS compliant.

MC Pure Indium

Six Alloy Families:

Paste, preforms, and wire are the most popular forms of solder we supply. Most of the alloys or pure metals listed can be supplied in these forms.

We also have a variety of Solder Research Kits available for initial testing in your application. These kits are available as wire, ribbon (for cutting preforms), and paste, and will get you started in your selection process.

Our globally based Applications Engineering teams are also available for consultation by phone, email, or onsite visits.