Used For Making Chip Resistors 99.6% Alumina Ceramic Substrate

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Shaanxi Puwei Electronic Technology Co., Ltd

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99.6% Alumina Ceramic Substrate For Making Chip Resistors

Great Electrical Insulation: The 99.6% alumina ceramic substrate is really good at insulating electricity. Its volume resistivity is super high, usually more than 10¹⁴ Ω·cm. This high insulation feature makes sure that there won't be any current leakage between different parts of the chip resistor and the components around it. It gives the resistor a stable electrical environment so that it can work precisely as a part for controlling the flow of electric current.
Dielectric Constant: The dielectric constant of the substrate is about 9 - 10. This number has an impact on the capacitance between different parts of the resistor and the substrate. A stable and proper dielectric constant is needed for the chip resistor to work accurately in high-frequency situations. It also affects the impedance and how signals are transmitted in the resistor-substrate system.

99.6% Alumina Ceramic Substrate Used For Making Chip Resistors

99.6% Alumina Ceramic Substrate Composition and Purity

High Alumina Content: As the name implies, it contains 99.6% alumina (Al₂O₃). The high purity of alumina is vital for its performance. The remaining percentage consists of minor impurities and additives that are carefully controlled to optimize the substrate's characteristics.
Impurity Control: The strict control of impurities such as silica (SiO₂), iron oxide (Fe₂O₃), and other trace elements is essential. These impurities, if present in excessive amounts, could affect the electrical and thermal properties of the substrate. For example, a higher than allowed content of iron oxide might increase the electrical conductivity in an undesirable way, leading to inaccurate resistance values in the chip resistors.

Alumina Ceramic Substrate Used For Making Chip Resistors

Applications in Chip Resistors

Precision Resistance Control: The stable physical and electrical properties of the 99.6% alumina ceramic substrate contribute to the precise control of the resistance value of chip resistors. Whether for low - resistance (a few ohms) or high - resistance (several mega - ohms) applications, the substrate provides a consistent base that allows for accurate manufacturing and reliable performance of the resistors.
Miniaturization Support: In the trend of miniaturization of electronic components, this substrate is well - suited for the production of small - sized chip resistors. Its mechanical strength and surface finish enable the creation of fine - pitched resistor patterns and the reduction of the overall size of the resistor without sacrificing performance. This is essential for applications where space is at a premium, such as in mobile phones, tablets, and other portable electronic devices.
High - Frequency Applications: Due to its good electrical properties, including the appropriate dielectric constant and high insulation, the substrate is used in high - frequency chip resistors. These resistors play a crucial role in radio - frequency (RF) circuits, such as those found in wireless communication devices (e.g., Bluetooth modules, Wi - Fi antennas). The substrate helps in minimizing signal loss and maintaining the stability of the resistor's performance in high - frequency environments.

We offer a variety of advanced ceramics, including alumina ceramics, aluminum nitride ceramics, silicon carbide ceramics, silicon nitride ceramics, and ceramic metallization materials, to improve and expand the performance of your products, processes, or systems. Whether you need high temperature stability, high hardness and wear-resistant surface, increased stiffness to resist weight radiation, anti-corrosion barrier or low thermal expansion rate, we can provide them. We can provide significant performance and cost advantages to meet your needs.

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Shaanxi Puwei Electronic Technology Co., Ltd

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Main Product: Alumina Ceramic Substrates, Aluminum Nitride Substrates , Metallized Ceramics, AlN Ceramics Disc, DPC Substrate, DBC Ceramic Substrate

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