Sn63Pb37

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Sn63Pb37 Solder Balls

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Sn63Pb37 Solder Balls (Eutectic Tin-Lead)

Sn63Pb37 solder balls are the eutectic tin-lead alloy, melting at 183 °C, used for BGA rework, chip reballing, legacy and repair assemblies, and applications that specify tin-lead solder. EasySpheres supplies Sn63Pb37 solder spheres in multiple diameters and in tape and reel, in conformance with IPC J-STD-006, with a Certificate of Conformance on every order.

Sn63Pb37 Solder Sphere Specifications

  • Alloy: Sn63Pb37, eutectic tin-lead
  • Applications: BGA rework and reballing, CSP ball attach, PCB repair, legacy and defense-related assemblies specifying tin-lead solder
  • Melting point: 183 °C (eutectic)
  • Stock diameters: 0.050 mm to 0.889 mm range; see the product listing for diameters and part numbers. Also available in tape and reel, 0.300 mm to 0.760 mm.
  • 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%; inspection illuminance greater than 270 lux.
  • Quality: Alloy purity in conformance with IPC J-STD-006 (composition per J-STD-006C); Certificate of Conformance ships with every order.
  • Compliance: Leaded (tin-lead) alloy; not RoHS-compliant as supplied. Supply is not prohibited; REACH Article 33 disclosure available. Confirm that your application or exemption permits tin-lead solder before ordering.
  • Packaging: Medical-grade, ESD-safe containers designed to resist the surface darkening caused by transit tumbling, reducing machine-vision faults in automated ball placement systems; QR-coded for lot conformance traceability and shipping accuracy.
  • 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

EasySpheres warrants this product to be defect free, with alloy purity in compliance of IPC-JSTD-006 guidelines.

Size deviation shall not be greater than:
± 0.010% for sizes .0.004" ~ 0.018" (0.100mm~0.450mm)
± 0.015% for Sizes 0.020" ~ 0.022" (0.500mm~0.550mm)
± 0.020% for Sizes 0.024" ~ 0.035" (0.600mm~0.889mm)

Shelf life of 1 year is guaranteed by EasySpheres from date of purchase.

Frequently Asked Questions

What is the melting point of Sn63Pb37?

183 °C. Sn63Pb37 is the tin-lead eutectic, so it melts and solidifies at that single temperature.

Are Sn63Pb37 solder balls suitable for BGA reballing?

Yes. Sn63Pb37 is the most common alloy for reballing legacy and repair BGA packages. Select the sphere diameter from the package documentation and confirm that your process and product requirements permit tin-lead solder.

Is Sn63Pb37 RoHS-compliant?

No. Sn63Pb37 is a leaded alloy and is not RoHS-compliant as supplied. Its supply is not prohibited, and EasySpheres provides a REACH Article 33 disclosure. Confirm that your application or exemption permits tin-lead solder before ordering.

Is Sn63Pb37 available in tape and reel?

Yes. EasySpheres supplies Sn63Pb37 in tape and reel from 0.300 mm to 0.760 mm on EIA-481-compatible 13-inch reels, standard 20,000 spheres per reel.

Does Sn63Pb37 conform to IPC J-STD-006?

Yes. Alloy purity conforms to IPC J-STD-006, and every order ships with a Certificate of Conformance covering composition, solidus and liquidus, size distribution, and sphericity.

Why Buy Solder Spheres from EasySpheres

Ordering and Support FAQs

Can I order Sn63Pb37 solder spheres in small quantities?

Yes. EasySpheres supplies Sn63Pb37 solder spheres with a minimum order of 10,000 spheres and scales to production volumes. Request a quote for larger requirements.

How quickly do Sn63Pb37 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 Sn63Pb37 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 Sn63Pb37 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.

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