2SW390MX

Lifetime @ Temp.:	2000 Hrs @ 105°C
Package / Case:	2917 (7343 Metric)
Mounting Type:	Surface Mount
Surface Mount Land Size:	--
Height - Seated (Max):	0.114" (2.90mm)
Size / Dimension:	0.287" L x 0.169" W (7.30mm x 4.30mm)
Lead Spacing:	--
Applications:	General Purpose
Ratings:	--
Operating Temperature:	-55°C ~ 105°C
Series:	PC-CON, SW
ESR (Equivalent Series Resistance):	9 mOhm
Voltage - Rated:	2V
Tolerance:	±20%
Capacitance:	390µF
Type:	Polymer
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Aluminum - Polymer Capacitors

Aluminum - Polymer capacitors are commonly used in a wide range of electronic circuits and systems. With their low equivalent series resistance (ESR) and good frequency characteristics, they are popular with designers of power supplies, filters, amplifiers and clocks.In this article, we’ll look at the features, applications and working principle of the 2SW390MX aluminum – polymer capacitor.

Features of the 2SW390MX Aluminum - Polymer Capacitor

The 2SW390MX is an aluminum – polymer capacitor, designed for use in high speed, high ripple current applications. It is a surface mount, chip capacitor, with a low profile design for ease of use.The 2SW390MX has a capacitance range of 10µF to 47µF, with a voltage rating of 6.3 to 25V dc. It has a self-healing property, so it is not permanently damaged when overloaded.The capacitor has excellent temperature characteristics, with an operating temperature range of -55 to +105 °C. It is also highly reliable, with an endurance life of up to 2000 hours and a failure rate of less than 0.03%.

Applications of the 2SW390MX Aluminum - Polymer Capacitor

The 2SW390MX aluminum – polymer capacitor is mainly used in applications that require fast response time and high ripple current. Its low ESR and good frequency characteristics make it ideal for high switching power supplies, LED drivers, instrumentation and medical devices.It is also used in motherboard designs, where its low leakage current, small size and low profile make it an ideal solution.

Working Principle of the 2SW390MX Aluminum - Polymer Capacitor

The 2SW390MX is a surface mounted chip capacitor, which utilizes a unique foil material construction. This construction allows the capacitor to store energy through electrical charges.The capacitor has a dielectric made of aluminum and a polymer material, which creates a barrier between the positive and negative terminals of the capacitor. The aluminum foil is electrochemically etched, forming a series of fine aluminum foil layers. The polymer material is then used to coat the aluminum foil, increasing the breakdown voltage and dielectric strength.When the voltage across the capacitor terminals increases, the electric field between the terminals also increases. This causes the electric charge to be transferred from one terminal to the other, creating an effect known as capacitance. The capacitance of the 2SW390MX is determined by the electrochemical reaction between the aluminum and polymer materials.The 2SW390MX is designed to store energy and reduce electrical noise. It is widely used in high switching power supplies, LED drivers, instrumentation and medical devices, due to its low ESR and good frequency characteristics.

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