SK2R2M400ST

Operating Temperature:	-25°C ~ 85°C
Package / Case:	Radial, Can
Mounting Type:	Through Hole
Surface Mount Land Size:	--
Height - Seated (Max):	0.512" (13.00mm)
Size / Dimension:	0.315" Dia (8.00mm)
Lead Spacing:	0.138" (3.50mm)
Ripple Current @ Low Frequency:	28mA @ 120Hz
Applications:	General Purpose
Ratings:	--
Polarization:	Polar
Series:	SK
Lifetime @ Temp.:	2000 Hrs @ 85°C
ESR (Equivalent Series Resistance):	120.63 Ohm @ 120Hz
Voltage - Rated:	400V
Tolerance:	±20%
Capacitance:	2.2µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction

Aluminum electrolytic capacitors are a type of capacitor that uses an electrolyte of aluminum foil as the dielectric medium to store electrical charge. They have a wide range of applications, including in power supplies, communications systems, medical devices, industrial equipment, and automotive applications. The SK2R2M400ST is an aluminum electrolytic capacitor designed specifically for professional audio amplifiers.

SK2R2M400ST

The SK2R2M400ST is a radial, polarized aluminum electrolytic capacitor with an 85℃ rated temperature and a rated voltage of 400V. It has two tags, one on the positive and one on the negative pole. The capacitor is suitable for use in a wide variety of audio applications. It features a frequency response from DC to 200 kHz, with a self-healing function to protect against surge current.

Application Field

The SK2R2M400ST is designed for use in professional audio amplifiers and other audio devices. It can be used as a filter capacitor in power amplifiers, as a driver capacitor in preamplifiers, and as an output capacitor in audio transformers. It is also suitable for use in electronic oscillators, mixers, and other frequency-sensitive applications.

Working Principle

An aluminum electrolytic capacitor works by utilizing anodes and cathodes to store electrical energy. An electrically conductive liquid, called electrolyte, fills the space between the anode and cathode and acts as the insulator. When a voltage is applied, electric charges are stored on the anode and cathode, creating an electric field that build up to a certain voltage.The amount of charge that can be stored depends on the capacitance, which is a measure of the capacitors ability to store electric charge. The capacitance of an aluminum electrolytic capacitor is determined by the area of the anode and cathode, the thickness of the dielectric material, and the type of electrolyte used.

Conclusion

The SK2R2M400ST is an aluminum electrolytic capacitor specifically designed for professional audio applications. It features two tags and a rated voltage of 400V, and is suitable for use in power amplifiers, preamplifiers, audio transformers, and other frequency-sensitive devices. The working principle of an aluminum electrolytic capacitor relies on anodes and cathodes to store electrical energy, and the amount of charge stored is determined by the capacitance, which is determined by the area of the anode and cathode, the thickness of the dielectric material, and the type of electrolyte used.

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