Eco-Friendly Lead-Free Composition · Low-Melting Sealing Glass Frit (SN-ZT)
The SN-ZT Lead-Free Glass Powder series is a high-purity micro glass powder designed with an eco-friendly composition that completely eliminates lead (Pb), an environmentally harmful substance. While preserving the low-temperature sinterability and excellent dielectric properties of conventional lead-based glass powders, this product fully satisfies global environmental regulations such as RoHS and REACH as a green alternative material.
Our lead-free glass powder is manufactured through state-of-the-art melting-quenching and precision grinding technologies, delivering uniform particle size distribution and consistent specific surface area for excellent process stability across diverse industrial sites. In particular, the glass transition temperature (Tg) and softening point (Sp) can be precisely tuned to the application, making it suitable for a wide range of uses from electronic components requiring high-temperature processes to precision coating materials.
Key Features
- 🌿 Eco-Friendly Lead-Free Composition — Contains no lead or heavy metals, making it safe for human health and minimizing environmental burden after disposal as a sustainable green material.
- 🔥 Excellent Low-Temperature Sinterability — Achieves a low melting/softening point comparable to lead-based products, enabling joint and sealing without thermal damage to heat-sensitive substrates or components.
- 📐 Precise Particle Size Control — The mean particle size (D50) can be adjusted from 5 µm to 15 µm to meet user requirements, and the narrow particle size distribution ensures uniform thickness and high density in printing or filling processes.
- 🛡️ Superior Chemical Resistance & Sealing Performance — A high glass transition temperature (Tg) and low coefficient of thermal expansion (CTE) effectively block moisture and gas penetration, maximizing the lifetime of highly reliable components such as semiconductors, LEDs and sensors.
- ⚡ Excellent Insulation & Dielectric Properties — Excellent electrical insulation delivers stable performance even in high-voltage or high-frequency environments, making it ideal for electronic packaging materials.
Technical Specifications
| Item | Value |
|---|---|
| Appearance | White powder |
| Main Components | Pb-Free · ZnO · B₂O₃ · SiO₂ |
| Softening Point | 570 ℃ (typical · adjustable on request) |
| Melting Temperature | 670 ℃ (typical · adjustable on request) |
| CTE | 7.99 ×10⁻⁶/℃ (typical) |
| Mean D50 | 5–15 µm (adjustable) |
| Packaging | 5 / 10 kg bag · OEM |
| Country of Origin | China |
Product Lineup
- SN-ZT · SN-ZT · Lead-Free Sealing Glass Frit — Lead-Free Sealing Glass Frit
Main Applications
Electronic Component Sealing · Display · Solar Cells · Ceramic & Metal Sealing
Particle size, purity, surface treatment and packaging can be customized to your specification. Contact us for samples, TDS and quotations.