MC18FA511F-F

Series:	MC
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Capacitance:	510pF
Tolerance:	±1%
Voltage - Rated:	100V
Dielectric Material:	Mica
Operating Temperature:	-55°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	1812 (4532 Metric)
Lead Spacing:	--
Features:	RF, High Q, Low Loss
Size / Dimension:	0.177" L x 0.126" W (4.50mm x 3.20mm)
Height - Seated (Max):	0.079" (2.00mm)

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Mica and PTFE Capacitors

Mica and PTFE capacitors are a type of electro-chemical capacitor used in many electronic devices and applications. The most common type is the MC18FA511F-F, a radial-lead film capacitor with molded leads that has a wide range of uses. The MC18FA511F-F is a special type of mica-film capacitor which has very small internal resistance, high insulation, low self-inductance, excellent stability, and excellent moisture resistance. It is a "high-end" capacitor and is highly sought after in the electronics industry.

Applications

The MC18FA511F-F is commonly used in a wide range of low and mid-frequency applications such as audio systems, power circuits, automotive electronics, digital circuits, transistors, ICs, special purpose circuits, and others. It is ideal for use as a compensator, a coupling device, a filter, a resistor, an amplifier, and a transformer core. The MC18FA511F-F is especially well-suited for signal processing applications as it exhibits low ESR (equivalent series resistance) which helps minimise distortion and minimise energy losses.

Working Principle

Mica and PTFE capacitors work by employing two conductive plates of opposite polarities that are separated by a non-conductive material, called the dielectric. This dielectric material has a dielectric constant, which determines the capacitance of the capacitor. The dielectric of a mica and PTFE capacitor is typically composed of mica and polytetrafluoroethylene (PTFE) compound, hence the name. When a voltage is applied across the plates of the capacitor, the mica and PTFE dielectric squeezes and compresses, causing an increase in the capacitance. The capacitance can also be altered by changing the distance between the plates and the dielectric constant of the dielectric. At the same time, the dielectric shields the capacitor from the external currents, providing a stable, low-impedance power source. This makes the mica and PTFE capacitor an excellent choice for applications requiring high accuracy, reliability, and stability.

Conclusion

Mica and PTFE capacitors are among the most stable and reliable available, making them perfect for low and mid-frequency applications. The MC18FA511F-F is a special mica-film capacitor that is ideal for use as a compensator, filter, resistor, amplifier, and transformer core. With its low ESR, excellent stability, and long-term reliability, the MC18FA511F-F is highly sought-after in the electronics industry.

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