α-Emission ≤ 0.001 cph/cm² — Low-Alpha Silica for Advanced Memory, HBM and AI Semiconductors
Low-Alpha Silica Powder is an ultra-high-purity SiO₂ filler in which radioactive impurities (U, Th) have been reduced to the ultimate level, keeping α-emission ≤ 0.001 cph/cm². It is an essential material for EMC and underfill of soft-error-sensitive advanced memory devices such as HBM, DDR5 and advanced packaging. Supplied as crystalline SN-CL and fused SN-FL grades.
Key Features
- ☢️ Ultra-Low α-Emission — ≤ 0.001 cph/cm² — eliminates soft errors at the source
- 🧬 U/Th ppb-Level Control — Uranium/Thorium controlled at ppb level
- 💾 HBM/AI Semiconductor Ready — Standard for HBM3E, DDR5, AP and high-density memory EMC
- 🔧 Dual Grade — Crystalline SN-CL and fused SN-FL grades available
- 🧪 High-Purity SiO₂ — 98.0–99.95 % (SN-CL crystalline / SN-FL fused)
- 📐 Precision PSD — Customizable D50 1–30 µm
Technical Specifications
| Item | Value |
|---|---|
| Appearance | White fine powder |
| SiO₂ Purity | 98.0–99.9 % (SN-CL) / 99.0–99.95 % (SN-FL) |
| Whiteness / Mohs (SN-CL) | 90 Min / 7 |
| Whiteness / PH (SN-FL) | 90 Min / 5–8 |
| α-Emission | Low-α controlled |
| Mean D50 | 1–30 µm (customizable) |
| Packaging | 10 / 20 kg bag · OEM |
| Country of Origin | China |
Product Lineup
- SN-CL · SN-CL · Low-Alpha Crystalline Silica Powder — Low-Alpha Crystalline
- SN-FL · SN-FL · Low-Alpha Fused Silica Powder — Low-Alpha Fused
Main Applications
HBM / DDR5 Memory · AI Semiconductor EMC · Underfill & Encapsulant · Advanced Packaging
Particle size, purity, surface treatment and packaging can be customized to your specification. Contact us for samples, TDS and quotations.