Products Solder Spheres

Specialty Solder Spheres

Indium Corporation is a small- to mid-volume supplier of specialty solder spheres. We offer a very wide variety of alloys and size range capabilities from around 0.004″ (100 μm) to 0.063″ (1.6 mm), depending on the alloy. Melting points range from below 90°C to over 700°C.

Powered by Indium Corporation

  • Low-Oxide Sphere
  • Tight Diameter Tolerance Control
  • Tight Alloy Composition Control
Microscopic view of uniform, spherical particles arranged on a dark background.

Features and Benefits

Specialty solder spheres are used in a variety of market segments, including medical, transportation and automotive, military and aerospace, high-end mobile, and computing. Clean manufacturing and processing ensure low-oxide levels with no organic contamination. All spheres are manufactured in IATF-16949 certified facilities.

  • Accurate diameters
  • Capable of supplying quantities from 1 sphere to > 20 million per month
  • Clean manufacturing and processing ensures low-oxide levels with no organic contamination
  • Whiteroom finishing and packaging ensures continuity of cleanliness
  • Pure metals ensure high-quality finished spheres
  • Manufactured in IATF-16949 certified facilities

Pb-Free Alloys

AlloyIndalloy® #Melting Point
Solidus (°C
)
Melting Point
Liquidus (°C)
Min
(in)*
Max
(in)*
Min
(µm)*
Max
(µm)*
In50Sn11181250.0040.030102762
In48Sn (In/Sn eutectic)1E1180.0040.035102889
Bi42Sn (Bi/Sn eutectic)2811380.0080.1092032,769
Bi42Sn1Ag2821391400.0080.030203762
99.99In (“Pure Indium”)41570.0040.0501021,270
Sn20In2.8Ag (Pb-free “Sn63”)2271751870.0040.030102762
Sn3.0Ag0.5Cu (SAC305)2562172200.0040.0651021,651
Sn4.0Ag0.5Cu (SAC405)25622172250.0040.035102889
Sn4Ag1212212280.0040.021102533
Sn5Ag1322212400.0040.032102800
80Au20Sn (Au/Sn eutectic)1822800.0040.039102991

*Approximate Manufacturable Diameter Range

Pb-Containing Alloys

AlloyIndalloy® #Melting Point
Solidus (°C
)
Melting Point
Liquidus (°C)
Min
(in)*
Max
(in)*
Min
(µm)*
Max
(µm)*
Sn46Pb8Bi2401601730.0100.030254762
Sn36Pb2Ag (Sn62)Sn621791810.0040.030102762
Sn37Pb (63Sn)1061830.0040.0501021,270
Pb25In1101831920.0040.027102686
Pb40In2061972310.0040.020102508
Pb10Sn1592753020.0040.0401021,016

*Approximate Manufacturable Diameter Range

Product Data Sheets

Specialty Solder Spheres PDS 97549 (A4) R9.pdf
Specialty Solder Spheres PDS 97549 R9

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