Low Alpha Solder Materials
Low Alpha
Solder Materials
Low alpha solder refers to a type of solder material that is specifically chosen to reduce or eliminate soft errors caused by the emission of alpha particles in electronic devices. In high-end microprocessors, ASICs (Application-Specific Integrated Circuits), high-speed integrated circuits, and semiconductor devices that operate at lower voltages or use advanced packaging techniques like BGA (Ball Grid Array) or flip chips, the impact of alpha particles on silicon chips can be significant. These alpha particles can interfere with the operation of the device and result in errors or failures.
Available low alpha solder options.
Common alloy groups, alpha emitter quality levels, available forms and packaging methods.
| Product Group | Alloy Composition | Alpha Emitter Quality | Shape / Form | Packaging |
|---|---|---|---|---|
| Tin | Sn | 0.02 / 0.01 / 0.005 / 0.002 / 0.001 cph/cm² | Ingots / pellets / slugs | Plastic bag in vacuum bags |
| Pb/Sn Alloy | Sn63Pb37 / Sn10Pb90 / Sn5Pb95 / Sn5Pb92.5Ag2.5 | 0.05 / 0.02 / 0.01 / 0.005 / 0.002 / 0.001 cph/cm² | Ingots / pellets / slugs | Plastic bag in vacuum bags |
| Lead-Free Alloy | SnAgCu / SnAgBi / SnAg / SnBi / SnCu | 0.02 / 0.01 / 0.005 / 0.002 / 0.001 cph/cm² | Ingots / pellets / slugs | Plastic bag in vacuum bags |
<0.01 cph/cm2
<0.002 cph/cm2
<0.001 cph/cm2
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