SMQ450VS271M22X50T2

Polarization:	Polar
Package / Case:	Radial, Can - Snap-In
Mounting Type:	Through Hole
Surface Mount Land Size:	--
Height - Seated (Max):	1.969" (50.00mm)
Size / Dimension:	0.866" Dia (22.00mm)
Lead Spacing:	0.394" (10.00mm)
Ripple Current @ High Frequency:	2.5454A @ 50kHz
Ripple Current @ Low Frequency:	1.78A @ 120Hz
Applications:	General Purpose
Ratings:	--
Series:	SMQ
Operating Temperature:	-25°C ~ 85°C
Lifetime @ Temp.:	2000 Hrs @ 85°C
ESR (Equivalent Series Resistance):	1.228 Ohm @ 120Hz
Voltage - Rated:	450V
Tolerance:	±20%
Capacitance:	270µF
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Tray

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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors (AECs) are amongst the most widely used electrical components found in a variety of applications today. Capacitors are devices that store electrical energy by utilizing the separation of charge between two electrodes. AECs are devices constructed from aluminum foils that are coated with an insulating layer of aluminum oxide. Within the device there is an electrolytic solution, usually an alkaline or gel electrolyte, that serves to connect the two electrodes in parallel.The SMQ450VS271M22X50T2 is a specific type of aluminum electrolytic capacitor. It is commonly used for high frequency pulse circuit applications such as in high-efficiency switching power supplies. This specific capacitor includes an internal series inductor and is designed to eliminate noisy voltage peaks and EMI noise.

Working Principle

At the most basic level, capacitors primarily work by storing electrical energy by creating two or more electrical fields on opposite sides of a separator. AECs work in a similar manner but they have a distinct advantage over traditional dielectric capacitors in the form of their large capacitance, which is typically higher than 100µF.When a voltage is applied across the two electrodes of an AEC, the electrolyte inside the capacitor is ionized and an efficient current path is created between the two sides. Essentially, every electron that crosses the internal insulator is replaced with an equal number of electrical ions in the electrolyte so the capacitor charge remains constant. This allows the capacitor to maintain its capacitance over a longer useful life.

Application Field

AECs can be found in a variety of applications. Due to their large capacitance and high stability under varying temperature conditions, they are often chosen as components for filtering out electrical noise in power supplies and circuits. This capacitor is particularly good at this job, thanks to its built-in inductor that is designed to counteract the high frequencies and EMI noise generated.As well as power supplies and circuits, AECs can also be found in a variety of medical and industrial applications. For example, they are often used for timing applications as their highly stable behavior makes them ideal for regulating such processes. Additionally, AECs are commonly used in audio equipment due to their ability to retain audio signals without losing fidelity.In conclusion, AECs are a type of capacitor that is used for a wide variety of applications. The SMQ450VS271M22X50T2 capacitor is designed to reduce EMI noise and is often used in high-frequency pulse circuits like those found in power supplies. With their highly stable performance and large capacitance, AECs are well-suited to a range of applications from medical equipment to audio signals.

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