ECW-F2155JB

Operating Temperature:	-25°C ~ 85°C
Features:	--
Ratings:	--
Applications:	High Frequency, Switching
Lead Spacing:	0.787" (20.00mm)
Termination:	PC Pins
Height - Seated (Max):	0.886" (22.50mm)
Size / Dimension:	0.906" L x 0.551" W (23.00mm x 14.00mm)
Package / Case:	Radial
Mounting Type:	Through Hole
Series:	ECW-F(B)
Dielectric Material:	Polypropylene (PP), Metallized
Voltage Rating - DC:	250V
Voltage Rating - AC:	--
Tolerance:	±5%
Capacitance:	1.5µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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ECW-F2155JB Application Field and Working Principle

Film capacitors are one of the most common types of capacitors available in the electric and electronic industry. The ECW-F2155JB is a type of film capacitor with a built-in safety circuit for over voltage protection. This capacitor is designed for AC motor control applications. It offers a reliable and economical solution for electric motor inverter applications.

ECW-F2155JB Features and Specifications

The ECW-F2155JB has a voltage rating of 400Vac and is available in two capacitance values: 8μF/400Vac and 10μF/400Vac. The maximum operating temperature is 70°C and the insulation resistance is >5000MΩ min. For load dump operation, the ECW-F2155JB has a minimum load dump time of 1ms and a maximum load dump voltage of 600Vac.

ECW-F2155JB Working Principle

The ECW-F2155JB film capacitor has a built-in safety circuit for over voltage protection. This circuit is designed to limit the peak voltage across the capacitor to a predefined level that is sufficient to protect the internal components.When the voltage across the terminals of the ECW-F2155JB exceeds the peak voltage, the safety circuit trips and the capacitor starts discharging the energy stored in the capacitor. During this process, the voltage across the terminals of the ECW-F2155JB collapses, thus protecting the internal components of the capacitor from damage. The main components of the safety circuit are a crowbar circuit, a transistor, and two resistors. The crowbar circuit functions as a voltage comparator, triggering the transistor when the voltage across the terminals of the ECW-F2155JB exceeds the pre-set voltage. When the transistor turns on, it causes a short circuit between the two terminals of the capacitor, thus causing the voltage across the terminals to collapse.

ECW-F2155JB Applications

The ECW-F2155JB is designed for use in AC motor control applications, such as electric motor inverters. It can be used in industrial machinery, home appliances, and other applications that require high peak voltage protection. The ECW-F2155JB is also suitable for use in Photovoltaic (PV) systems, as it can help protect the inverter system from transient over voltage conditions.

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