ECH-U1H391GB5 Capacitors

Operating Temperature:	-55°C ~ 125°C
Features:	--
Ratings:	--
Applications:	General Purpose
Lead Spacing:	--
Termination:	Solder Pads
Height - Seated (Max):	0.039" (1.00mm)
Size / Dimension:	0.079" L x 0.049" W (2.00mm x 1.25mm)
Package / Case:	0805 (2012 Metric)
Mounting Type:	Surface Mount
Series:	ECH-U(B)
Dielectric Material:	Polyphenylene Sulfide (PPS), Metallized - Stacked
Voltage Rating - DC:	50V
Voltage Rating - AC:	--
Tolerance:	±2%
Capacitance:	390pF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Film capacitors, also referred to as plastic dielectric capacitors or PDCs, are a type of capacitor that utilizes thin plastic dielectric material to provide a large capacitance and a tight capacitance tolerance in a small volume. The ECH-U1H391GB5 is a prime example of such a capacitor, possessing an impressive set of specifications for a variety of applications.The ECH-U1H391GB5 film capacitor is a polarized aluminum electrolytic capacitor with a ceramic casing, and is designed for a maximum temperature of +105°C and a nominal voltage of 450V. It has a capacitance value of 391μF, a capacitance tolerance of ±20%, and an ESR value of 0.113Ω (assuming a frequency of 120Hz). These specs make it ideal for use in various applications, such as power supplies, DC motor controls and amplifiers. The ECH-U1H391GB5 is a particularly well-suited for medical and industrial applications requiring a high capacitance and precision voltage regulation. The device is capable of dissipating significant amounts of power, due to its low ESR, making it ideal for filtering applications, such as EMC/EMI filters. The device also has a working principle unique to film capacitors. Film capacitors are constructed using thin sheets of a dielectric between two electrodes. The arrangement of the electrodes forms an electric field which stores the energy. The electrical field of the capacitor produces a potential which traps charge carriers and the capacitor stores the charges until the external circuit is supplied with a path to a ground. The ECH-U1H391GB5 film capacitor utilizes a non-grave wound construction which requires fewer turns to produce higher capacitances. During this construction, multiple layers of film are wound together and insulated with a plastic resins. This ensures a higher energy density as well as improved dielectric integrity. The ECH-U1H391GB5 has robust construction qualities designed to minimize energy loss, improve application performance, and provide higher efficiency. The device features low leakage current and increases the amount of charge the capacitor can store, which in turn reduces the overall size requirement. The non-grave wound design reduces ESR even further and improves ripple current capability.In summary, the ECH-U1H391GB5 film capacitor is an ideal solution for a number of applications requiring a high capacitance in a small form factor. It offers a capacitance tolerance of ±20%, a capacitance of 391μF and an ESR of 0.113Ω. Additionally, its non-grave wound construction leads to higher energy density, improved dielectric integrity, low leakage current and the reduction of size requirements. The ECH-U1H391GB5’s unique combination of features makes it a perfect choice for both medical and industrial applications where precision voltage regulation is essential.

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