Solder Spheres
The right solder spheres for BGA and CSP ball attach or BGA rework depend on the alloy, the sphere diameter, and the application. EasySpheres supplies precision solder spheres in lead-free, tin-lead, high-lead, and low-temperature alloys, in diameters from 0.050 mm to 0.889 mm, for semiconductor packaging, PCB assembly, prototyping, and BGA rework. As a solder sphere supplier with same-day shipping and supply from 10,000 spheres to production volumes, EasySpheres helps customers match the right spheres to their exact requirements.
Specifications
- Alloy families: Lead-free (SAC105, SAC305, SAC405, Sn96.5Ag3.5), low-temperature (Sn42Bi58), tin-lead (Sn63Pb37, Sn62Pb36Ag02), and high-lead (Sn20Pb80, Sn10Pb90, Sn05Pb95)
- Applications: BGA and CSP ball attach, flip chip and wafer-level bumping, BGA rework (including reballing), PCB assembly, prototyping
- Stock diameters: 0.050 mm to 0.889 mm (0.002 in to 0.035 in)
- Dimensional tolerance: Maximum dimensional tolerance ±4% (typical measured ±0.50% for 0.050 to 0.450 mm, ±1% for 0.500 to 0.550 mm, ±0.83% for 0.600 to 0.889 mm); sphericity deviation less than 1.5%.
- Quality: Alloy purity in conformance with IPC J-STD-006; Certificate of Conformance ships with every order; standard quality documentation available on request.
- Packaging: Medical-grade, ESD-safe containers designed to resist surface darkening from transit tumbling; QR-coded for lot traceability. Bulk jars and tape and reel available.
- Shelf life: Two years from the date of shipment from the EasySpheres facility (product held sealed in controlled inert storage until shipped).
- Minimum order: 10,000 spheres
Frequently Asked Questions
What size solder spheres do I need?
EasySpheres stocks solder spheres from 0.050 mm to 0.889 mm. The correct diameter is set by the BGA or CSP package documentation and pad geometry, not by pitch alone. Take the diameter from the package drawing or approved rework specification.
Which solder sphere alloy should I use?
Follow the assembly specification. Lead-free SAC alloys (SAC305 most commonly) are used for RoHS-compliant electronics; tin-lead alloys such as Sn63Pb37 are used for legacy, repair, and aerospace and defense assemblies that specify them; high-lead alloys are used for flip chip and C4 bumping; Sn42Bi58 is used where a low reflow temperature is required.
Where can I buy solder spheres online?
Directly from EasySpheres. Order online in multiple alloys and diameters from 10,000 spheres; most in-stock orders placed before 2:00 PM Pacific ship the same day.
Can I get an alloy or diameter that is not listed?
Yes. Contact EasySpheres with the alloy, diameter, and application, and we will confirm availability and specifications.
Why Buy Solder Spheres from EasySpheres
- Fast shipping: most in-stock orders placed before 2:00 PM Pacific ship the same day, otherwise within 24 hours, with a greater-than-95% on-time delivery record.
- Small quantities welcomed: minimum order 10,000 spheres, with volume supply for production requirements.
- Certificate of Conformance with every shipment; technical data sheet and SDS available on the product page.
- Two-year shelf life from the date of shipment; product is held in sealed packaging in a controlled inert storage environment until it ships.
- Full lot traceability with QR-coded packaging.
- Serving approximately 1,500 customers worldwide since 2005 across semiconductor packaging, aerospace, defense, medical electronics, EMS, and BGA rework.
- Internal quality system aligned with ISO 9001:2015 principles (not externally certified); standard quality documentation available on request.
Ordering and Support FAQs
Can I order solder spheres in small quantities?
Yes. EasySpheres supplies solder spheres with a minimum order of 10,000 spheres and scales to production volumes. Request a quote for larger requirements.
How quickly do solder spheres ship?
Most in-stock orders placed before 2:00 PM Pacific ship the same day; other orders ship within 24 hours. EasySpheres maintains a greater-than-95% on-time delivery record.
What documentation ships with solder spheres?
A Certificate of Conformance ships with every order, covering alloy composition, solidus and liquidus, size distribution, and sphericity. The technical data sheet and SDS are available on the product page, and standard quality documentation is available on request.
What is the shelf life of solder spheres?
The stated shelf life is two years from the date of shipment from the EasySpheres facility. Prior to shipment the product is retained in its original sealed packaging within a controlled inert storage environment designed to minimize exposure to moisture, oxygen, and contaminants.