ECQ-E1224KZ

Operating Temperature:	-40°C ~ 85°C
Features:	--
Ratings:	--
Applications:	General Purpose
Lead Spacing:	0.394" (10.00mm)
Termination:	PC Pins
Height - Seated (Max):	0.453" (11.50mm)
Size / Dimension:	0.472" L x 0.197" W (12.00mm x 5.00mm)
Package / Case:	Radial
Mounting Type:	Through Hole
Series:	ECQ-E(K)
Dielectric Material:	Polyester, Metallized
Voltage Rating - DC:	100V
Voltage Rating - AC:	--
Tolerance:	±10%
Capacitance:	0.22µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction

Film capacitors, the most widely used class of capacitors, are featured by their low ESR, long life, high insulation resistance, low temperature coefficient of capacitance, wide working range of temperature and humidity, and especially their stability of dielectric constant. ECQ-E1224KZ is a kind of film capacitor, which has its own unique features, and can become an effective choice for applications where these features become valuable or even necessary.

Application Field

ECQ-E1224KZ-type film capacitors are mainly used in luminaire drivers, air conditioning thermostats, refrigerators, electronic ballasts, water heaters, switching power supplies, computers, medical equipment, and instruments for measuring, communication and control systems. With its high insulation property, the ECQ-E1224KZ can be used as coupling or bypass capacitors to maintain the signal purity of electronic applications such as amplifiers, filters and oscillators. Besides, it can also be employed for power instability and power failure recovery in solar energy and wind power applications.

Working Principle

The ECQ-E1224KZ is a type of polyester film capacitor. The capacitance of the device relies on the relation between the input frequency and the absorption of electrostatic energy by a dielectric between two electrodes. On one side, when the frequency gets higher, the electrical field intensity increases, leading to higher energy absorption by the dielectric. On the other side, the capacitor losses some energy due to the resistive loss of the dielectric and the copper electrodes. The dielectric constant of polyester material, kp, is stable and has low temperature coefficient. Hence, the ECQ-E1224KZ capacitor could handle a large range of frequencies when a DC voltage is applied.

Conclusion

In conclusion, the ECQ-E1224KZ capacitor is a stable, low ESR film capacitor, capable of applications in a wide range of fields, from luminaire drivers and air conditioning thermostats to solar energy and wind power applications. Its main features are its high insulation resistance, low temperature coefficient of capacity, and wide working range of temperature and humidity. The working principle of the film capacitor is based on energy absorption between two electrodes and dielectric material, with its dielectric constant being mainly determined by the frequency and the applied voltage.

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