Bi57Sn42Ag1 | Near-Eutectic Pbfree Solder Spheres
- Leadfree Solder Spheres
- 1% Agg adds mechanical strength to bismuth-tin alloy
- Low-temperature near-eutetic Solder
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.
- 1% Ag adds mechanical strength to bismuth-tin alloy
- Low-Temperature near-eutectic Solder compared to Tin-Silver
- Compatible with many Flux Types
- 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)
| Alloy Composition |
Composition of the alloy material
| Alloy Type |
A metallic element type
| 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.
| 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!
| 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
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%