MC12FD390J-TF

Series:	MC
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Capacitance:	39pF
Tolerance:	±5%
Voltage - Rated:	500V
Dielectric Material:	Mica
Operating Temperature:	-55°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	1210 (3225 Metric)
Lead Spacing:	--
Features:	RF, High Q, Low Loss
Size / Dimension:	0.126" L x 0.098" W (3.20mm x 2.50mm)
Height - Seated (Max):	0.079" (2.00mm)

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Mica and PTFE capacitors are a type of ceramic capacitor, consisting of sheets of metal and mica dielectric spacer. The metal sheets are generally made of copper, gold, or aluminium. The mica layer is supported by a dielectric coating of polytetrafluoroethylene, better known as PTFE. MC12FD390J-TF capacitors are particularly suitable for use in telecommunications equipment, as their high dielectric levels and low self-inductance characteristics contribute to their ideal performance in high-frequency systems.In terms of their working principle, these capacitors are constructed with thin, discrete metal layers that are interspersed with a thin mica dielectric layer. In essence, the capacitor plates act as two conductors separated by an insulating mica dielectric layer, which acts as a barrier to the flow of current. The key difference between mica and PTFE capacitors and other types of capacitors is that the PTFE layer allows current to more easily flow between the conducting plates.The primary benefit of MC12FD390J-TF capacitors is their ability to operate at higher frequencies, as the PTFE layer enables them to store and transfer high-frequency signals efficiently. Thanks to their ultra thin dielectric layers, they are able to store more electrical charges in a much smaller area than traditional capacitors. Additionally, the thin, flexible PTFE layer helps to minimize the voltage and displacement effects of capacitors as they are subjected to high-frequency signals.Their low equivalent series resistance (ESR), along with a high thermal conductivity and very low-inductance are additional benefits that make them ideal for high-frequency applications. The ESR rate ensures that minimal power is lost due to heat waste and other forms of resistance. Additionally, these capacitors can operate over a wide range of temperatures, providing the ability to handle high frequency signals with reliability and accuracy.MC12FD390J-TF capacitors are mainly used in high-performance telecommunications equipment, such as microwave radios and satellite systems. Their vast use in these applications allows them to help reduce the size of equipment and enhance signal fidelity. Additionally, these capacitors can be used in other high-power applications, such as DC-DC converters, power supplies, and battery-charging circuits.In conclusion, MC12FD390J-TF capacitors are a type of mica and PTFE capacitor particularly well-suited for use in high-frequency telecommunications application. Their ability to store and transfer their charge efficiently, along with their low equivalent series resistance and high thermal conductivity, makes them ideal for these types of applications. MC12FD390J-TF capacitors are also widely used in power supplies, DC-DC converters, and battery-charging circuits, among others.

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