MCHN38FM121J-Y

Series:	MCHN
Packaging:	Tray
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Capacitance:	120pF
Tolerance:	±5%
Voltage - Rated:	4kV
Dielectric Material:	Mica
Operating Temperature:	-55°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	Nonstandard SMD
Lead Spacing:	--
Features:	RF, High Q, Low Loss
Size / Dimension:	0.380" L x 0.380" W (9.65mm x 9.65mm)
Height - Seated (Max):	0.160" (4.06mm)

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Mica and PTFE CapacitorsMica and polytetrafluoroethylene (PTFE) capacitors are used in a wide range of applications. They are widely used in the electronics industry, particularly in power supplies, high frequency applications and power supply regulation. Their excellent stability over temperature, wide temperature range, low leakage current, low noise and high RF voltage level stability make them ideal for these applications. The MCHN38FM121J-Y is a mica and PTFE capacitor that is widely used in these applications.Working PrincipleMica and PTFE capacitors work on the principle of changing the capacitance of a circuit when a voltage is applied to it. A capacitor stores electrical charge temporarily when a DC voltage is applied across two plates separated by a dielectric material, such as mica or PTFE. The capacitance of the capacitor is dependent on the area of the plates, the distance between them and the dielectric material. The voltage applied to the plates due to the current in the circuit, will cause a change in the capacitance of the circuit.The MCHN38FM121J-Y is an air dielectric mica and PTFE capacitor. The case consists of two brass disks, each with a conductive mica plate, mounted in an aluminum housing. The plate is coated with PTFE and has a dielectric strength of approximately 19,000 volts per centimeter. The temperature range of this capacitor is -55°C to +125°C.ApplicationsThe MCHN38FM121J-Y is most commonly used in power supply applications. It is ideal for high frequency and high voltage applications, as it has a very low leakage current and low noise. It can be used in power supplies for voltage stabilization and spike protection. The wide temperature range and excellent stability also makes it ideal for use in avionics and space applications.The MCHN38FM121J-Y can also be used as a bypass capacitor, due to its small capacitance value. A bypass capacitor is used to help reduce noise or to filter out unwanted signals. It does this by allowing the AC signals to pass through while blocking the DC signals, thus providing more efficient power supply regulation.ConclusionThe MCHN38FM121J-Y is a high quality mica and PTFE capacitor that is used widely in power and high frequency applications. Its wide temperature range, low leakage current, low noise and excellent stability make it ideal for a variety of applications, including voltage stabilization, spike protection and bypass capacitors. It is also an ideal choice for use in avionics and space applications due to its temperature range and stability.

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