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Product Description
Product Introduction
Barium Titanate (BaTiO₃) is a high-performance ceramic material widely used as a functional additive in the manufacturing of metal oxide varistors (MOVs). Known for its excellent dielectric properties, high insulation resistance, and stable perovskite crystal structure, BaTiO₃ significantly contributes to improving the electrical performance and reliability of varistor components.
In ZnO-based varistor systems, BaTiO₃ is typically added to control the microstructure, enhance grain boundary behavior, and improve the non-linear voltage-current characteristics. It helps in achieving higher energy absorption capacity, lower leakage current, and faster response to voltage surges. The uniform particle size and high purity of BaTiO₃ ensure consistency during sintering and reliable long-term performance in surge protection applications.
Our Barium Titanate is available in various particle sizes and purity levels to meet the specific processing requirements of varistor manufacturers. It is suitable for applications in consumer electronics, telecommunications, automotive electronics, and industrial equipment where overvoltage protection is critical.
Physical Properties
| Item | Spec | Remark |
| Particle Size Distribution (D50) |
0.2 ~ 30 μm |
Laser Particle Size Analizer |
| Water Content (wt%) |
0.2 ~ 30μm ： < 0.5 |
105℃ × 1Hr |
| Ignition Loss (wt%) |
0.2 ~ 30μm ： < 1.0 |
800℃ × 1Hr |
Chemical Composition (BaTiO3)
| Product No. | BT-1 Series | BT-2 Series | BT-3 Series |
| BaO/TiO2 ( Mole Ratio) | 1.000±0.01 | 1.000±0.02 | 1.000±0.03 |
| SrO(wt%) | <0.05 | <0.1 | <0.3 |
| Fe2O3 (wt%) | <0.01 | <0.03 | <0.1 |
| K2O+Na2O(wt%) | <0.01 | <0.03 | <0.1 |
| Al2O3 (wt%) | <0.1 | <0.2 | <0.3 |
| SiO2(wt%) | <0.1 | <0.2 | <0.3 |
Chemical Composition(BaTi4O9)
| Item | BaTi4O9 |
| BaO/TiO2(Mole ratio) | 0.25±0.01 |
| SrO(wt%) | <0.05 |
| Fe2O3 (wt%) | <0.01 |
| Na2O+K2O(wt%) | <0.01 |
| Al2O3 (wt%) | <0.1 |
| SiO2 (wt%) | <0.1 |
Key Features:
High dielectric constant for improved varistor function
Enhances electrical non-linearity and surge protection
Good thermal and chemical stability
Available in fine particle sizes for uniform sintering
Compatible with multilayer and disc varistor designs
Applications:
Metal Oxide Varistors (MOVs)
Surge protection devices
Circuit protection in power supplies
Lightning arresters
Transient voltage suppression (TVS) systems
FAQ
1: Why is Barium Titanate used in varistors?
BaTiO₃ helps improve the dielectric properties and enhances the electrical performance of ZnO-based varistors, allowing for better energy absorption and faster response to voltage spikes.
2: Is BaTiO₃ the primary material in a varistor?
No, zinc oxide (ZnO) is the primary material in most varistors. BaTiO₃ is added as a secondary phase to modify and optimize the electrical characteristics.
3: What form is BaTiO₃ supplied in for varistor use?
It is supplied as a high-purity powder with controlled particle size distribution, typically in submicron to micron ranges.
4: Can BaTiO₃ be used in multilayer varistors?
Yes, it is suitable for both multilayer and disc-type varistors, offering excellent sinterability and stable electrical performance.
5: Is this material environmentally compliant?
Yes, our Barium Titanate complies with RoHS and other environmental regulations and is free from hazardous substances.
