EKXJ451ELL470MK40S

Polarization:	Polar
Package / Case:	Radial, Can
Mounting Type:	Through Hole
Surface Mount Land Size:	--
Height - Seated (Max):	1.634" (41.50mm)
Size / Dimension:	0.492" Dia (12.50mm)
Lead Spacing:	0.197" (5.00mm)
Ripple Current @ High Frequency:	1.3125A @ 100kHz
Ripple Current @ Low Frequency:	525mA @ 120Hz
Applications:	Automotive
Ratings:	AEC-Q200
Series:	KXJ
Operating Temperature:	-25°C ~ 105°C
Lifetime @ Temp.:	12000 Hrs @ 105°C
ESR (Equivalent Series Resistance):	--
Voltage - Rated:	450V
Tolerance:	±20%
Capacitance:	47µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Background

Aluminum electrolytic capacitors are electrical components used in a variety of electronic circuits and systems. They are composed of an anode with a porous layer of aluminum oxide acting as the dielectric, a cathode and two electrolytes. The anode and cathode are both connected inside the electrolytic capacitor, which allows electric current to flow and store energy. The EKXJ451ELL470MK40S is a type of aluminum electrolytic capacitor, which can be classified according to size, voltage and capacitance.

Application Field

The EKXJ451ELL470MK40S capacitor is a radial lead style component that is primarily used in audio and power amplification applications,and general purpose applications. With its high-temperature characteristics, it is also useful in welding equipment, and home appliances that require motor start-up or high-current surge protection.

Working Principle

The EKXJ451ELL470MK40S has an anode and cathode that are connected in series within the electrolyte. When electric current flows through the capacitor, an electric field is created between the anode and cathode, causing an oxygen ion current (oxidation reaction) to form on the anode surface. The oxygen then migrates through the electrolyte and reacts with the aluminum oxide layer of the dielectric to form an electric charge, which then accumulates on the dielectric surface. This creates a voltage drop across the dielectric that limits the electric current. When the electric current is stopped, the charge stored in the dielectric is then slowly released.

Conclusion

The EKXJ451ELL470MK40S is an aluminum electrolytic capacitor designed for use in audio and power amplification applications, welding equipments, and other high-current surge protection and motor start-up applications. It operates on the principle of an anode and cathode connected in series in an electrolyte solution, whereby an electric field is created that causes an oxygen ion current to form, and an electric charge to accumulate on the dielectric surface, creating a voltage drop that limits the electric current.

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