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Bi57Sn42Ag1 | Near-Eutectic Pbfree Solder Spheres

Harmonization Code : 8001.20 |   Unwrought tin: Tin alloys
Main features
  • Leadfree Solder Spheres
  • 1% Agg adds mechanical strength to bismuth-tin alloy
  • Low-temperature near-eutetic Solder

Product Description

LINQALLOY Bi57Sn42Ag1 Low-temperature near-eutectic solder spheres are lead-free Bismuth-Tin alloys that contain 57% Bismuth (Bi), 42% Tin (Sn) and 1% Silver (Ag) and are often written as 57Bi42SnAg1, Sn42Bi57Ag1, or 42Sn57BiAg1. Bi57Sn42Ag1 Solder Spheres are low-temperature, lead-free, near-eutectic solder spheres and are used by companies working with BGA, CSP, LBGA, PBGA and CBGA components who have made the transition to Lead-free (Pb-free) soldering.

Features:

  • 1% Ag adds mechanical strength to bismuth-tin alloy
  • Low-Temperature near-eutectic Solder compared to Tin-Silver
  • Compatible with many Flux Types
  • Lead-free

Diameter Tolerance

  • 0.075mm - 0.15mm (3-6 mils) : ±0.005mm (±0.2 mils)
  • 0.20mm - 0.60mm (8-24 mils) : ±0.010mm (±0.4 mils)
  • 0.65mm - 0.89mm (25-30 mils) : ±0.015mm (±0.6 mils)
Product Family
Bi57Sn42Ag1  
0.250 mm 0.300 mm 0.350 mm 0.400 mm 0.457 mm 0.500 mm
250 kpcs/jar
Normal Price
$276.549
Sale Price
$212.73/Jar
Quantity OrderedPrice per Jar
  1 - 1 Jar  $212.73 /Jar
  2 - 2 Jar  $146.67 /Jar
  3 - 3 Jar  $107.14 /Jar
  4 - 4 Jar  $93.75 /Jar
  5 - 9 Jar  $75.00 /Jar
  10 - 24 Jar  $68.18 /Jar
  25 - 49 Jar  $62.50 /Jar
Normal Price
$311.74
Sale Price
$239.80/Jar
Quantity OrderedPrice per Jar
  1 - 1 Jar  $239.80 /Jar
  2 - 2 Jar  $158.89 /Jar
  3 - 3 Jar  $121.43 /Jar
  4 - 4 Jar  $106.25 /Jar
  5 - 9 Jar  $85.00 /Jar
  10 - 24 Jar  $77.20 /Jar
  25 - 49 Jar  $69.80 /Jar
Normal Price
$276.627
Sale Price
$212.79/Jar
Quantity OrderedPrice per Jar
  1 - 1 Jar  $212.79 /Jar
  2 - 2 Jar  $149.69 /Jar
  3 - 3 Jar  $107.14 /Jar
  4 - 4 Jar  $93.75 /Jar
  5 - 9 Jar  $74.99 /Jar
  10 - 24 Jar  $67.99 /Jar
  25 - 49 Jar  $61.99 /Jar
Normal Price
$289.315
Sale Price
$222.55/Jar
Quantity OrderedPrice per Jar
  1 - 1 Jar  $222.55 /Jar
  2 - 2 Jar  $157.78 /Jar
  3 - 3 Jar  $114.29 /Jar
  4 - 4 Jar  $100.00 /Jar
  5 - 9 Jar  $80.00 /Jar
  10 - 24 Jar  $72.72 /Jar
  25 - 49 Jar  $66.99 /Jar
Normal Price
$289.315
Sale Price
$222.55/Jar
Quantity OrderedPrice per Jar
  1 - 1 Jar  $222.55 /Jar
  2 - 2 Jar  $157.78 /Jar
  3 - 3 Jar  $114.99 /Jar
  4 - 4 Jar  $100.00 /Jar
  5 - 9 Jar  $80.00 /Jar
  10 - 24 Jar  $72.20 /Jar
  25 - 49 Jar  $66.99 /Jar
Normal Price
$354.029
Sale Price
$272.33/Jar
Quantity OrderedPrice per Jar
  1 - 1 Jar  $272.33 /Jar
  2 - 3 Jar  $183.50 /Jar
  4 - 8 Jar  $110.88 /Jar
  9 - 24 Jar  $88.24 /Jar
  25 - 99 Jar  $71.43 /Jar
  100 - 499 Jar  $54.55 /Jar
$54.55
In stock Shipping in 2 - 4 weeks In stock

Quantity:

Technical Specifications

General Properties
Alloy Composition
Alloy Composition
Composition of the alloy material
Bi57Sn42Ag1
Alloy Type
Alloy Type
A metallic element type
Bi57Sn42Ag1
Specific Gravity
Specific Gravity
Specific gravity (SG) is the ratio of the density of a substance to the density of a reference substance; equivalently, it is the ratio of the mass of a substance to the mass of a reference substance for the same given volume.

For liquids, the reference substance is almost always water (1), while for gases, it is air (1.18) at room temperature. Specific gravity is unitless.
8.57g/cc
Spheroid Tolerance
Spheroid Tolerance
The allowed % that a solder ball (solder sphere) can divert from being perfectly round and spherical.

We take one lot of solder spheres and divide it into 4 smaller lots. Each lot is then checked with advanced visual inspection systems. If even 1 ball is out of spec, the entire batch is scrapped and reworked!
1.5 %
Metal Loading
Bismuth (Bi)
Bismuth (Bi)
Bismuth is a chemical element with symbol Bi and atomic number 83. Bismuth is the most naturally diamagnetic element, and has one of the lowest values of thermal conductivity among metals.
57 %
Silver (Ag) 1.0 %
Tin (Sn) 42 %
Thermal Properties
Melting Temperature
Liquidus Melting Temperature
Liquidus Melting Temperature
Liquidus, is the temperature point at which an alloy becomes completely liquid.
140 °C
Solidus Melting Temperature
Solidus Melting Temperature
Solidus is the temperature point at which a completely solid alloy starts melting and becoming softer.
139 °C
Other Properties
RoHS Compliant
RoHS Compliant
RoHS is a product level compliance based on a European Union Directive which restricts the Use of certain Hazardous Substances in Electrical and Electronic Equipment (RoHS).

Products compliant with this directive do not exceed the allowable amounts of the following restricted materials: lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB) and polybrominated diphenyl ethers (PBDE), with some limited exemptions
Yes

Additional Information

What do I get when I buy Bi57Sn42Ag1 Solder Spheres from CAPLINQ?

The advantage of ordering solder spheres online at CAPLINQ.com is that you can be sure of the quality. The solder spheres you receive are originally manufactured solder spheres packed into jars with inert gas (nitrogen). We do not repack the solder balls we receive, so the jars you will receive have never been opened, thus ensuring the quality of the product you receive. The lid of the jar is also always sealed with a shrink-wrapped plastic wrap ensuring that the solder spheres do not oxidate in the jar.

Furthermore, each jar has a clear label on the lid specifying the solder ball diameter as well as a label on the front identifying the alloy type, the quantity of spheres in the jar, the date of manufacture, and the product lot (or batch) number. This batch number is also tied to a certificate of conformance that is also provided with the solder spheres and ensures the Bi57Sn42Ag1 solder spheres meet the following quality criteria:

  • Tin (Sn): 42%
  • Bismuth (Bi): 58%
  • Silver (Ag): 1%
  • Eutectic Temperature: -
  • Melting Temperature (Solidus): 139°C
  • Melting Temperature (Liquidus): 140°C
  • Spheroid Tolerance : Within 1.5%