SLP181M420A4P3

Lead Spacing:	0.394" (10.00mm)
Size / Dimension:	0.866" Dia (22.00mm)
Height - Seated (Max):	1.850" (47.00mm)
Surface Mount Land Size:	--
Mounting Type:	Through Hole
Package / Case:	Radial, Can - Snap-In
Series:	SLP
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Capacitance:	180µF
Tolerance:	±20%
Voltage - Rated:	420V
ESR (Equivalent Series Resistance):	1.843 Ohm @ 120Hz
Lifetime @ Temp.:	3000 Hrs @ 105°C
Operating Temperature:	-25°C ~ 105°C
Polarization:	Polar
Ratings:	--
Applications:	General Purpose
Ripple Current @ Low Frequency:	950mA @ 120Hz
Ripple Current @ High Frequency:	1.4A @ 20kHz

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Aluminum electrolytic capacitors are primarily used for decoupling, filtering, bypassing, buffering and pulse loading applications. SLP 181M420A4P3 is a type of aluminum electrolytic capacitors from the SLP Series. It is an Automotive Grade Multi-anode Power Capacitor, which offers multiple types of features. This capacitor is found in many applications across a variety of industries, such as automotive, consumer electronics, telecommunications, and more. The SLP 181M420A4P3 is a multianode aluminum electrolytic capacitor with an extended temperature range from -40°C to +105°C. It has an operating voltage of 420V, a high ripple current rating up to 6.8A, and an inductive ripple current rating of 3.5A at 105°C. This capacitor has a large capacitance range with a minimum of 10,000µF and a maximum of 20,000µF, and is designed to withstand higher ripple currents while providing reliable long-term stability. The SLP 181M420A4P3 is designed to meet the requirements of automotive grade applications such as engine control systems and power storage assist systems. It can be used in a number of applications including automotive, consumer electronics, telecommunications, and more. Its features include high temperature range and robust construction for improved stability.Working PrincipleAluminum electrolytic capacitors are constructed with two aluminum foils and an electrolytic paper, as shown in Figure 1. The electrodes are immersed in an aqueous solution of potassium hydroxide, in which oxygen causes an anodic reaction to produce an oxidized layer of aluminum oxide. The hydroxyl ions, in turn, form a barrier between the anode and the electrolyte. When a voltage is applied across the anode and the cathode, an electric field is generated between the two foils and the electrolyte becomes polarized allowing current to pass through. The electric field causes the electolyte to act as a dielectric material, resulting in a capacitance between the two electrodes. The anode foil has a great capacitance compared to the cathode, resulting in a higher capacitance. The capacitance of an aluminum electrolytic capacitor is temperature dependent due to the thermal expansion of the electrolyte. To maximize the capacitor\'s temperature range stability, an overage of capacitance is built into the design. ConclusionThe SLP 181M420A4P3 is a type of aluminum electrolytic capacitor and is an ideal choice for applications such as engine control systems and power storage assist systems. This capacitor provides a high ripple current rating up to 6.8A and has an extended temperature range from -40°C to +105°C. It is constructed with two aluminum foils and an electrolytic paper, and the electric field between the two foils and the electrolyte generates a capacitance. The capacitance of an aluminum electrolytic capacitor is temperature dependent due to the thermal expansion of the electrolyte, which can be greatly reduced by building an overage into the design.

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