381LX391M350K452

Polarization:	Polar
Package / Case:	Radial, Can - Snap-In
Mounting Type:	Through Hole
Surface Mount Land Size:	--
Height - Seated (Max):	1.850" (47.00mm)
Size / Dimension:	1.181" Dia (30.00mm)
Lead Spacing:	0.394" (10.00mm)
Ripple Current @ High Frequency:	1.8A @ 20kHz
Ripple Current @ Low Frequency:	1.3A @ 120Hz
Applications:	General Purpose
Ratings:	--
Series:	381LX
Operating Temperature:	-25°C ~ 105°C
Lifetime @ Temp.:	3000 Hrs @ 105°C
ESR (Equivalent Series Resistance):	--
Voltage - Rated:	350V
Tolerance:	±20%
Capacitance:	390µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors (also known as aluminum electrolytic capacitors, capacitors, electrolytic capacitors, etc.) are the most commonly used capacitors in electronic products. They are widely used in AC / DC filters, power supply circuits, oscillation circuits, frequency division circuits, signal coupling/decoupling, energy storage, time delay, frequency compensation, etc. All capacitors have two electrical terminals, between which an electric field is generated when a voltage is applied across them. Aluminum electrolytic capacitors work on a different principle than other capacitors, using an electrolyte solution like an insulator between a pair of aluminum foil electrodes.The most common form of aluminum electrolytic capacitor is the axial type, with leads on both sides, and a cylindrical aluminum foil casing with an organic insulation medium with an aluminum oxide dielectric deposited on its surface. The anode and the cathode are connected to the leads (the lead closest to the stamped code on the capacitor usually corresponds to the positive (+) terminal of the device). The anode is connected to the metal can itself.An important category of axial Aluminum electrolytic capacitors is marked with the code 381LX391M350K452. This type of capacitor has three different codes: 381LX, 391M, and 350K; each of these codes defines the physical size of the component as well as its capacitance.The 381LX is a type of radial aluminum electrolytic capacitor that has a diameter of 3.81 mm and a length of 19 mm. It is usually the smallest capacitor used on most electrical devices. The capacity for this type of capacitor is usually determined by the formula C=L×(D/1000)µF, where C is the capacity, L is the length of the capacitor, and D is the diameter of the capacitor. For example, a 381LX electrolytic capacitor with a length of 19mm and a diameter of 3.81mm would have a capacitance of approximately 4.06µF.The 391M type of aluminum electrolytic capacitor has a diameter of 3.91 mm and a length of 10mm. The formula for this type of capacitor is C = (L × 1000)/DµF. For example, a 391M type of capacitor with a length of 10mm and a diameter of 3.91mm would have a capacitance of approximately 1.82µF.The 350K type aluminum electrolytic capacitor has a diameter of 3.50 mm and a length of 20mm. The formula for this type of capacitor is C = (2 × L × 1000)/DµF. For example, a 350K type of capacitor with a length of 20mm and a diameter of 3.50mm would have a capacitance of approximately 5.71µF.In addition to physical size differences, aluminum electrolytic capacitors also differ in terms of voltage ratings. The voltage rating for each type of capacitor is determined by the number of turns of aluminum foil used in the winding of the capacitor, as well as the thickness of the electrolyte solution. Voltage ratings for 381LX range from 6.3V to 63V, while 391M and 350K type capacitors are rated from 4V to 35V and 10V to 50V, respectively.When using aluminum electrolytic capacitors, it is important to ensure that the electrodes are properly connected to minimize voltage drops and maximize capacitor performance. As aluminum electrolytic capacitors are polarized components, they can only be connected one way in a circuit. This means that reverse polarity connection will cause the capacitor to be damaged.In conclusion, aluminum electrolytic capacitors with the code 381LX391M350K452 are three common types of axial electrolytic capacitors with different sizes and voltage ratings. The capacity of each type of capacitor is determined by their physical shapes and electrolyte solution thickness. It is important to make sure that these capacitors are properly installed in a circuit to ensure optimal performance.

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