CMR07F682FPDR

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Mica and PTFE capacitors are made of low temperature-coefficient materials and are most commonly used in electrical circuits for bypassing, parallel filtering, and storing electrical energy. The CMR07F682FPDR is a type of mica and PTFE Capacitor and known for its superior temperature coefficient. It is extremely stable while operating in temperatures ranging from -55°C to +125°C, and has excellent stability in wide part-to-part variations.

Most mica and PTFE capacitors are composed of multiple layers of mica and PTFE with the mica being between two layers of PTFE. Each layer features an etched away substructure, creating a fine grid like structure which allow for a larger number of capacitance. The PTFE, with its low dielectric constant, permits higher working voltages. In comparison to ceramic and electrolytic capacitors, mica and PTFE capacitors are the most stable and reliable capacitors in the market.

The CMR07F682FPDR utilizes a CPE dielectric structure, which stands for "Compound Polyether". This type of dielectric is created by combining mica with a polyether to create a substance with higher dielectric strength and temperature coefficients. This type of dielectric is less sensitive to temperature and humidity changes than other types of dielectrics. Additionally, these capacitors use metal foil terminations, reducing the failure rates by increasing the long-term reliability.

CMR07F682FPDR offers excellent temperature stability for up to 1,000 hours. The temperature coefficient rating is +/-20ppm/°C, with a dielectric strength of 605V AC (50/60Hz). The capacitance ranges from 133pF to 22µF and it has a rated impedance of 25.4MΩ at 1MHz and 2V DC. This capacitor also features low ESR (equivalent series resistance) of < 70 Ohm and small size for easy PCB mounting.

The working principle of the CMR07F682FPDR is based on capacitive reactance. When an AC signal is applied to the metal layer of the capacitor, a current flows is created between the two plates, storing electrical energy. When the AC signal is removed, the stored energy is discharged slowly, providing a bypass effect to the circuit. The capacitor works in a similar fashion in high voltage applications, providing an electrical field to bypass the flow of current.

The CMR07F682FPDR is well suited for use in high resistant radio frequency circuits, medical devices, and power supplies. These capacitors are also widely used in compensation circuits, where capacitance must remain stable over time. Data acquisition circuits and audio signal processing modules also benefit from the consistent outputs provided by this type of capacitor. Other applications include vibration sensing and damping, and power supply stabilizing.

In summary, the CMR07F682FPDR is a highly reliable, low temperature coefficient, mica and PTFE capacitor. It combines a CPE dielectric structure with a fine grid structure to increase capacitance, while still allowing for high working voltages. This capacitor has a wide temperature range of -55°C to +125°C, and it is suitable for numerous applications. With its low ESR, low temperature coefficient, and excellent stability, the CMR07F682FPDR is one of the best capacitors available.

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