MPXB155K305H

Operating Temperature:	-40°C ~ 110°C
Features:	--
Ratings:	X2
Applications:	EMI, RFI Suppression
Lead Spacing:	1.083" (27.50mm)
Termination:	PC Pins
Height - Seated (Max):	1.122" (28.50mm)
Size / Dimension:	1.260" L x 0.551" W (32.00mm x 14.00mm)
Package / Case:	Radial
Mounting Type:	Through Hole
Series:	MPX
Dielectric Material:	Polypropylene (PP), Metallized
Voltage Rating - DC:	--
Voltage Rating - AC:	305V
Tolerance:	±10%
Capacitance:	1.5µF
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Film Capacitors: MPXB155K305H Application Field and Working Principle

Film capacitors employ thin polymer dielectric layers, which drastically change the electrical characteristics of the device. These dielectric layers are typically secured between two metal plates, which are then rolled or folded to fit inside a metallic housing. Generally, the metal plates of a film capacitor are much larger than those of the ceramic counterpart, as they are used to both store and disperse charges. Therefore, film capacitors provide an extremely high tolerance to temperature changes and have superior electrical characteristics when compared to ceramic models, and are therefore often used in higher grade audio-visual equipment or in industrial applications.The MPXB155K305H is a high-grade film capacitor manufactured by Yageo, a well-known producer of electronic components. It is rated for a rated voltage of 0.155kV and a rated capacitance of 305H, and features a small form factor and low equivalent series resistance (ESR). The device also performs well over a wide range of temperatures, ranging from -55°C to +130°C. This makes the MPXB155K305H a suitable device for high temperature applications such as those in the automotive industry.The main applications of the MPXB155K305H film capacitor include filtering, current sensing, decoupling, and power factor correction. The high capacitance of the MPXB155K305H makes it particularly suitable for filtering applications, such as in electromagnetic interference (EMI) noise suppression. The low ESR combined with its wide operating temperature range makes it a good choice for applications involving current sensing, decoupling, and power factor correction, which are all critical functions in many modern electrical systems.The working principle of the MPXB155K305H film capacitor is based on the electrostatic storage of electrical charge. When a voltage is applied across the thin polymer dielectric layers, each layer accumulates a charge of its own, resulting in an electrical double-layer. This double-layer configuration provides the necessary space between the two metal plates and generates a capacitance, allowing electrical charge to be stored and released as needed.The MPXB155K305H film capacitor boasts superior thermal and electrical performance compared to cheaper ceramic capacitors. Its small size and wide operating temperature range make it ideal for industrial, automotive, and other high-temperature applications requiring excellent operating characteristics. Moreover, its high capacitance, low ESR, and ability to handle large voltages make it a great choice for filtering, current sensing, decoupling, and power factor correction applications.

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