The ATC 800 B Series datasheet presents a line of high-quality NPO ceramic capacitors optimized for high RF (Radio Frequency) power applications. Designed and manufactured by American Technical Ceramics, these capacitors offer a wide capacitance range from 0.1 pF (picoFarads) to 1000 pF, fitting various needs in demanding RF environments.
Main Features
Quality Factor: A significant feature is a high-Q factor of 2000 @ 1 MHz, reflecting low energy loss for efficient performance.
Temperature Coefficient of Capacitance (TCC): With a TCC of ±0.30 PPM/°C across a temperature range of -55°C to +125°C, the capacitors maintain consistent performance under temperature variations, making them reliable in different working environments.
Insulation Resistance: Another aspect of their resilience is the high insulation resistance, maintaining at least 10^5 Megohms at +25°C and 10^4 Megohms at +125°C.
Voltage Specifications & Thermal Performance
Working Voltage: The capacitors’ working voltage varies depending on the specific capacitance value, which can be referenced in the datasheet’s table on page 2.
Dielectric Withstanding Voltage (DWV): These capacitors can withstand 250% of the rated working voltage for five seconds, ensuring durability and reliability.
Thermal Shock: The capacitors meet MIL-STD-202, Method 107, Condition A, indicating their robustness against sudden thermal changes.
Applications & Environments
Typical applications for the ATC 800 B Series capacitors include high RF power filters, combiners, and couplers, as well as antenna and DC blocking. They are suitable for critical and high-end RF applications including wireless communications, HDTV broadcasting, public safety radio, and aerospace technology.
Environmental Tests: The series has been tested for a wide range of environmental conditions and is compliant with EIA-198, MIL-PRF-55681, and MIL-PRF-123 standards. They show no piezoelectric effects, with a capacitance that remains unchanged by voltage or pressure variations. Also, the parts endure life tests, cementing their dependability over extensive use.
Product Options & Ordering Information
The datasheet provides detailed tables stating the rated working voltage (WVDC) for different capacitance values, illustrating the broad range offered within the series. ATC allows for special values, tolerances, and matching upon request. Additionally, part numbers can be specified with or without the “ATC” prefix, as both designations are interchangeable.
For precision ordering, each part number encodes the series, case size, capacitance value, tolerance, rated voltage, termination type, packaging, and any special requirements. The document also lists various termination styles and packaging options, including tape and reel, to assist with machine assembly processes.
References:
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