

Electronic Packaging Crystalline Silica Filler 2000–5000 Mesh
Crystalline silica filler for electronic packaging and epoxy encapsulation, with a 2000–5000 mesh reference, whiteness ≥92, Mohs 7, good mobility and anti-overflow focus. Confirm the resin system and acceptance limits before sampling.
Specifications
- Mesh Size
- 325mesh,400mesh,600mesh,800mesh,1250mesh,2000mesh,2500mesh,3000mesh,5000mesh,6000mesh
- Particle Size
- 3-5mm,1-3mm,1-0.5mm,0.5-0.2mm,0.1-0.2mm,0.1-0mm(120mesh),0.075mm(200mesh)
- SiO₂ Content
- 99.3-99.7%
- Fe₂O₃
- <0.015%
- Moisture
- <0.1%
- Whiteness
- 92-95
- Moh's hardness
- 7
- Specific Gravity
- 2.65g/cm³
ELECTRONIC PACKAGING · CRYSTALLINE SILICA FILLER
Electronic Packaging Crystalline Silica Filler 2000–5000 Mesh
Crystalline silica filler for electronic packaging and epoxy encapsulation, with a 2000–5000 mesh reference, whiteness ≥92, Mohs 7, good mobility and anti-overflow focus. Confirm the resin system and acceptance limits before sampling.
Filler Selection for Electronic Encapsulation
This grade is intended for electronic-packaging and epoxy-encapsulation evaluations. The key selection question is whether the referenced mesh range, whiteness, hardness, mobility and anti-overflow behavior fit the customer’s resin system and filling process. The page therefore keeps the application discussion centered on encapsulation instead of unrelated rubber, coating or sealant uses.

Electronic Packaging Trial Checkpoints
- Define the epoxy or other encapsulation system and the intended component or package.
- Compare the 2000–5000 mesh reference with the required particle-size distribution.
- Confirm whiteness, moisture, chemistry and hardness against the approved tables.
- Record mixing, filling and anti-overflow observations using the customer’s own process conditions.
From Grade Reference to Production Trial
Use the application reference, Properties table and Particle Size Distribution table as one selection set. Good mobility and anti-overflow performance are the stated application directions; they should be validated in the buyer’s resin, loading level and processing sequence before approval.

Crystalline Silica Properties
| Item | QG300 | QG400 | QG600 | SP10 | SP5 | SP2 |
|---|---|---|---|---|---|---|
| SiO₂ (%) | 99.3–99.7 | 99.3–99.7 | 99.3–99.7 | 99.3–99.7 | 99.3–99.7 | 99.3–99.7 |
| Fe₂O₃ (%) | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.015 |
| Al₂O₃ (%) | 0.015 | 0.015 | 0.015 | 0.02 | 0.02 | 0.02 |
| K₂O (%) | 0.005 | 0.005 | 0.005 | 0.008 | 0.008 | 0.008 |
| Moisture (%) | <0.1 for all grades | |||||
| Loss on ignition (%) | 0.15 for all grades | |||||
| Mohs hardness | 7 for all grades | |||||
| Na⁺ (ppm) | <2 | <3 | ||||
| Cl⁻ (ppm) | <5 for all grades | |||||
| EC (µS/cm) | <5 | <10 | ||||
| pH | 5.7–7.5 for all grades | |||||
Particle Size Distribution
| Grade | Particle size (μm) |
|---|---|
| QG300 | 21–24 μm |
| QG400 | 17–20 μm |
| QG600 | 15–17 μm |
| SP10 | 9–12 μm |
| SP5 | 3–5 μm |
| SP2 | 1.5–2.5 μm |
Order specification: Please confirm the electronic-packaging formulation, target grade within the 2000–5000 mesh reference, whiteness requirement, packing format and destination before sampling or quotation.
Electronic Packaging Supply Details
- Standard packaging: Net Weight 25 kg per bag.
- Bulk packaging option: 1000 kg.
- Container reference: 20–25 MT per 20 ft container.
- Certification: ISO 9001.
- Country of origin: Made in China.
- Alternative packaging can be discussed according to purchasing requirements.
Information to Include in an Inquiry
- Encapsulation formulation and intended electronic-packaging use.
- Required grade or mesh reference and particle-size requirement.
- Whiteness, moisture or other acceptance limits.
- Trial or production quantity, packaging preference and destination.

Electronic Packaging Filler FAQ
Electronic-packaging formulations where good mobility and anti-overflow material performance are part of the evaluation.
The product reference is 2000–5000 mesh.
Review the approved chemistry, physical properties and particle-size distribution with the customer’s resin-system requirements.
No. Final suitability and acceptance limits must be confirmed against the customer’s formulation and process.
Request a Quote for Electronic Packaging Filler
Share the resin system, target grade or mesh, acceptance limits, quantity and destination for a quotation based on the approved reference data.
Request a Quote


