Thin-Film RF/Microwave Capacitor Technology Accu-P ® Series Thin-Film Technology
■The non-ideal characteristics of a real capacitor can be ignored at low frequencies. Physical size imparts inductance to the capacitor and dielectric and metal electrodes result in resistive losses, but these often are of negligible effect on the circuit. At the very high frequencies of radio communication (>100MHz) and satellite systems (>1GHz), these effects become important. Recognizing that a real capacitor will exhibit inductive and resistive impedances in addition to capacitance, the ideal capacitor for these high frequencies is an ultra low loss component which can be fully characterized in all parameters with total repeatability from unit to unit.
■Until recently, most high frequency/microwave capacitors were based on fired-ceramic (porcelain) technology. Layers of ceramic dielectric material and metal alloy electrode paste are interleaved and then sintered in a high temperature oven. This technology exhibits component variability in dielectric quality (losses, dielectric constant and insulation resistance), variability in electrode conductivity and variability in physical size (affecting inductance). An alternate thin-film technology has been developed which virtually eliminates these variances. It is this technology which has been fully incorporated into Accu-P ® and Accu-P ® to provide high frequency capacitors exhibiting truly ideal characteristics.
■The main features of Accu-P® may be summarized as follows:
▲High purity of electrodes for very low and repeatable ESR.
▲Highly pure, low-K dielectric for high breakdown field, high insulation resistance and low losses to frequencies above 40GHz.
▲Very tight dimensional control for uniform inductance, unit to unit.
▲Very tight capacitance tolerances for high frequency signal applications
■This accuracy sets apart these Thin-Film capacitors from ceramic capacitors so that the term Accu has been employed as the designation for this series of devices, an abbreviation for “accurate.”
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04023J4R7ABSTR\500 、 Accu-P ® 0201 、 Accu-P ® 0402 、 Accu-P ® 0603 、 Accu-P ® 0805 、 Accu-P ® 1210 |
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[ Cellular Communications ][ CT2 ][ PCN ][ Cordless Telephone ][ Personal Comm. Networks ][ Satellite TV ][ Cable TV ][ GPS ][ Global Positioning Systems ][ Vehicle Location Systems ][ Vehicle Alarm Systems ][ Paging ][ Military Communications ][ Radar Systems ][ Video Switching ][ Filters ][ VCO’s ][ Matching Networks ][ RF Amplifiers ] |
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Datasheet |
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Please see the document for details |
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0201;0402;0603;0805;1210 |
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English Chinese Chinese and English Japanese |
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2024/1/18 |
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Rev 1 |
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TDS-RFM-0032 |
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2.3 MB |
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