EKMH401VSN181MQ40T

Size / Dimension:	1.000" Dia (25.40mm)
Height - Seated (Max):	1.654" (42.00mm)
Surface Mount Land Size:	--
Mounting Type:	Through Hole
Package / Case:	Radial, Can - Snap-In
Series:	KMH
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Capacitance:	180µF
Tolerance:	±20%
Voltage - Rated:	400V
ESR (Equivalent Series Resistance):	1.381 Ohm @ 120Hz
Lifetime @ Temp.:	2000 Hrs @ 105°C
Operating Temperature:	-25°C ~ 105°C
Polarization:	Polar
Ratings:	--
Applications:	General Purpose
Ripple Current @ Low Frequency:	940mA @ 120Hz
Ripple Current @ High Frequency:	1.3442A @ 100kHz
Lead Spacing:	0.394" (10.00mm)

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Aluminum Electrolytic Capacitors

The EKMH401VSN181MQ40T is an example of one type of Aluminum Electrolytic Capacitor. It is a cylindrical capacitor with two terminals penetrating the encasement which are used to house the anode and the cathode. The unit is typically housed in steel shells with the insulation being a mix of rubber and paper.

Application Field

The EKMH401VSN181MQ40T is a polarized capacitor, meaning that when installed, it must be oriented with the positive and negative terminals in the correct orientation or catastrophic failure of the capacitor can occur. These capacitors are mainly used in applications with high frequency switching or quick charging processes. They are popular in power generating or regulating circuits, conditioning circuits and other high power devices. Additionally, these capacitors are also found in display screens, light dimmers, and speaker systems.

Working Principle

Aluminum Electrolytic Capacitors operate on the principle of reversibly forming an aluminum oxide layer on the negative plates by applying an electric field. This layer acts as a dielectric material, providing a barrier between the conductors. By controlling the voltage applied to the capacitor, the charge and discharge characteristics of the aluminum oxide layer can be controlled. When the capacitor is in use, the electricity is applied to the aluminum oxide layer. This layer begins to form a dielectrical barrier between the conductors, thus providing a route for the electricity to flow. After a certain period of time, the electric field dissipates and the charge is removed from the capacitor. Thiscycle of charge and discharge is constantly repeated depending on the voltage applied to the capacitor.

Conclusion

The EKMH401VSN181MQ40T is a type of Aluminum Electrolytic Capacitor that plays an important role in a variety of applications with high frequency switching or quick charging processes. Its working principle is based on the reversibly forming of an aluminum oxide layer on the negative plates by applying an electric field. This layer acts as a dielectric material, providing a route for electricity to flow. The capacitor is then capable of being charged or discharged depending on the voltage applied. All in all, this type of capacitor is essential for a variety of electrical uses.

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