04023J3R0BBSTR

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1. Describe

The non-ideal characteristics of a true capacitor can be ignored at low frequency. Physical size imparts capacitor inductance and Dielectric and metal electrodes cause resistive losses, but these usually have negligible effects on the circuit. These effects become important at the very high frequencies of radio communications (>100MHz) and satellite systems (>1GHz). Recognizing that a true capacitor will exhibit inductive and resistive impedances in addition to capacitance, the ideal capacitor for these high frequencies is an ultra-low loss component that can be fully characterized in all parameters and can vary from one unit to Another unit with full repeatability. Until recently, most high frequency/microwave capacitors were based on fired ceramic (porcelain) technology. Ceramic dielectric material layer Interleaved with metal alloy electrode paste, then sintered in a high temperature oven. The technique exhibits component variability in dielectric quality (loss, permittivity, and insulation resistance), variability in electrode conductivity, and variability in physical dimensions (affecting inductance). An alternative thin-film technology has been developed that virtually eliminates these differences. It is this technology that has been fully integrated into Accu-P® and Accu-P® to provide high frequency capacitors with truly desirable characteristics.

2. Feature

Accu-P® addresses the rapidly growing demand for low-loss (high-Q) capacitors in surface mount technology, especially in the mobile communications market, such as 450 and 900 MHz cellular radios, UHF walkie-talkies, UHF cordless 2.3 GHz telephones, low Noise blocks for 11-12.5 GHz and other VHF, UHF and microwave applications. What makes Accu-P® unique today is its ability to provide very low capacitance values (0.05pF) and very tight capacitance tolerances (±0.01pF).

    1. The RF power handling capabilities of the Accu-P® allow it to be used in both small signal and RF power applications.

    2. Thin film technology ensures minimum batch-to-batch parameter variation at high frequencies.

    3. Internationally recognized size with excellent size control.

    4. Ultra-small size chip capacitors (1005) are available.

    5. Ultra-tight capacitance tolerances.

    6. Low ESR for VHF, UHF and microwave frequencies.

    7. Enhanced RF power handling capabilities.

    8. High stability over time, temperature, frequency and voltage type.

    9. Nickel-plated/solder terminals provide excellent solderability and leaching resistance.

  10. High electrode purity with extremely low and repeatable ESR.

  11. High purity, low K dielectric, high insulation for high breakdown fields Resistance and low losses for frequencies above 40GHz.

  12. Very tight dimensional control for consistent inductance, cell-to-cell.

  13. Very small capacitance tolerance for high frequency signals application.

3. Application

    1. Cellular communications

    2. CT2/PCN (wireless Telephone/personal communication. the Internet)

    3. Cable TV

    4. Cable TV

    5. GPS (Global Positioning system)

    6. Vehicle Positioning System

    7. Vehicle Alert System

    8. Pagination

    9. Army communicate

  10. Radar system

  11. Video switching

  12. Test and Measurement

  13. Filter

  14. Voltage Controlled Oscillator

  15. matching network

  16. RF amplifier