ATC 800 A Series NPO Ceramic, High RF Power Ultra-Low ESR Multilayer Capacitors

Category: American Technical Ceramics Corp, Capacitors, Electronics

Overview

The ATC 800 A Series represents a line of NPO ceramic capacitors specifically designed to perform in high-power radio frequency (RF) applications. These capacitors are characterized by their robust and reliable ultra-low equivalent series resistance (ESR) and the ability to handle high RF power. American Technical Ceramics (ATC) manufactures these capacitors adhering to stringent standards, ensuring their suitability for a range of critical RF applications.

Key Features

Capacitance Range: These capacitors come in a wide capacitance range from 0.1 pF to 100 pF. The case A size capacitors, with dimensions of .055″ x .055″, are optimally designed for high RF power applications. The proprietary NPO dielectric contributes to the capacitors’ standout performance by facilitating superior heat transfer and maintaining capacitance stability over a broad temperature range from -55°C to +125°C.

Quality Factor: A noteworthy quality factor of 2000 @ 1 MHz indicates low energy loss during operation, essential for maintaining signal integrity in RF circuits.

Temperature Coefficient of Capacitance (TCC): The TCC lies within 0 to +30 PPM/°C, which ensures stable performance across diverse temperature conditions.

Insulation Resistance (IR): An insulation resistance of ≥10⁵ Megohms at 25°C and ≥10⁴ Megohms at 125°C at rated working voltage direct current (WVDC) emphasizes the reliability and dielectric strength of the capacitors.

Electrical Specifications

Working Voltage (WVDC): The working voltage varies according to specific capacitance values (refer to the Capacitance Values Table on page 2 of the datasheet).

Dielectric Withstanding Voltage (DWV): The dielectric can withstand 250% of the rated WVDC for 5 seconds, which equates to 625 VDC for case A capacitors.

Environmental Tests Compliance: The ATC 800 A Series capacitors meet and exceed various military and industry standards such as EIA-198, MIL-PRF-55681, and MIL-PRF-123, signifying their robustness and readiness for deployment in military and industrial applications.

Stability and Reliability

These capacitors demonstrate no aging or piezoelectric effects, ensuring longevity and consistent performance. Capacitance drift is minimal, at only ±(0.02% or 0.02 pF), whichever is greater. Additionally, the terminals are designed to withstand a pull of 5 lbs. minimum, demonstrating the capacitor’s mechanical durability.

Applicable Tests and Operating Conditions

ATC 800 A Series capacitors can withstand thermal shock per MIL-STD-202 Method 107, Condition A, and moisture resistance per MIL-STD-202, Method 106. They also meet the requirements of MIL-STD-202 Method 103 for low voltage humidity, sustaining an 85°C environment with 85% relative humidity for 240 hours minimum. The life test consists of 2000 hours at 125°C with 200% WVDC applied, as per MIL-STD-202, Method 108.

Applications

These capacitors are ideal for UHF and microwave communications systems, public safety radio, wireless and telecom networks including WiMAX, and satellite systems. They are commonly used in high RF power filter networks, combiners, couplers, matching networks, output and antenna coupling, and DC blocking and bypassing.

Contact and Certification

ATC 800 A Series capacitors are RoHS compliant and lead-free. ATC, an ISO 9001 registered company, is reachable for queries and orders through their North America, Europe, and Asia offices. Contact information for each region is provided within the datasheet. Further information about the capacitors can be acquired through the company’s official website: www.atceramics.com.