SiO₂ 99.0–99.95% · D50 0.1–40 µm · Standard Flame-Fusion Spherical
SN-QG series Spherical Silica Powder is a spherical SiO₂ powder produced from high-purity silica by flame fusion, metallic silicon deflagration or chemical synthesis. Featured by small specific surface area, good liquidity and low stress.
Key Features
- 🔵 High Sphericity — Flame-fusion / Si-deflagration / chemical synthesis produces near-perfect spheres
- 🧪 High-Purity SiO₂ 99.0–99.95% — Low Na⁺/Cl⁻/E/C ensures semiconductor EMC reliability
- 🌡️ Low CTE & Low Thermal Conductivity — Excellent CTE match with silicon wafer — minimizes cracking and delamination
- ☢️ Low-Alpha Grade (SN-QG-L) — Low radioactive element content — prevents soft errors in advanced memory
- ⚙️ High Loading & Low Stress — Spherical shape and low SSA maintain low viscosity/stress at high loading
- 📐 Precise PSD Control — D50 0.1–40 µm (SN-QG) or 1–30 µm (SN-QG-L) customizable
Technical Specifications
| Item | Value |
|---|---|
| Code | SN-QG |
| SiO₂ | 99.0 ~ 99.95 % |
| Appearance | White powder |
| Morphology | Spherical |
| PH | 5 ~ 8 |
| D50 (PSD) | 0.1–40 µm (customizable) |
| Features | Low Na⁺/Cl⁻/E/C · high sphericity · low stress |
| Country of Origin | China |
Main Applications
Semiconductor EMC (Encapsulant) · CCL / PCB Substrate · Underfill & Encapsulant · High Thermal Conductivity Materials
Parent Category: Spherical Silica Powder
Particle size, purity, surface treatment and packaging can be customized to your specification. Contact us for samples, TDS and quotations.