E37X351CPN123MFF5M

Polarization:	Polar
Package / Case:	Radial, Can - Screw Terminals
Mounting Type:	Chassis Mount
Surface Mount Land Size:	--
Height - Seated (Max):	6.142" (156.00mm)
Size / Dimension:	3.504" Dia (89.00mm)
Lead Spacing:	1.252" (31.80mm)
Ripple Current @ High Frequency:	42.441A @ 10kHz
Ripple Current @ Low Frequency:	27.3A @ 120Hz
Applications:	General Purpose
Ratings:	--
Series:	U37X
Operating Temperature:	-40°C ~ 85°C
Lifetime @ Temp.:	15000 Hrs @ 85°C
ESR (Equivalent Series Resistance):	10 mOhm @ 120Hz
Voltage - Rated:	350V
Tolerance:	±20%
Capacitance:	12000µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction

Aluminum electrolytic capacitors are one of the most commonly used components in electronic systems, and their popularity is due to their relatively high capacitance values made possible with a small physical size. One of these capacitors is the E37X351CPN123MFF5M, which is a radial lead aluminum electrolytic capacitors from Rubycon. In this article, we will discuss the application field and working principle of this part.

What is the E37X351CPN123MFF5M?

The E37X351CPN123MFF5M is a radial lead aluminum electrolytic capacitor, and it has a range of industrial and commercial applications. It is designed to meet tolerance values of +20%/-20%, and it is also optimized for long life. With a capacitance value of 470 μF, this part is primarily used in DC-to-DC converters, switching power supply, and input UPS equipment. It also works well with other applications where a stable input signal is critical.

Working Principle

Aluminum electrolytic capacitors are either polarized or unpolarized and they are usually filled with an electrolytic solution. The E37X351CPN123MFF5M is a polarized capacitor, which means that it must be correctly oriented to operate correctly. The anode side of the capacitor is marked with the negative (-) symbol, and the cathode side is marked with a positive (+) symbol. The aluminum electrolyte in the capacitor serves as the dielectric and the current is then carried by the electrolyte solution. Inside the capacitor, a "space-charge" layer acts as the dielectric and it prevents electrical current from flowing across the anode and the cathode. When a voltage is applied to the capacitor, the flow of electrical current will create a "diffused layer" between the two plates and this layer will act as a barrier and prevent current from flowing to the opposite end.

Advantages and Disadvantages

Aluminum electrolytic capacitors have several advantages over other types of capacitors. First, they offer relatively large capacitance values in a small physical size. Secondly, the performance of these capacitors is stable and reliable. Third, they have low parasitic losses and are more efficient than other types of capacitors. The main disadvantage of aluminum electrolyte capacitors is their relatively high leakage current, which means that they may lose some of their charge over time. Also, they tend to be more expensive than other types of capacitors. Finally, their life expectancy can be affected by high temperatures, so care must be taken when using them in high temperature environments.

Conclusion

In conclusion, the E37X351CPN123MFF5M aluminum electrolytic capacitor has a wide range of commercial and industrial applications. Its high capacitance value and small size make it a popular choice for DC-to-DC converters, switching power supplies, and input UPS equipment. Its working principle reduces current flow by using electrical current to create a "diffused layer" between the capacitor\'s anode and cathode plates. The advantages of aluminum electrolytic capacitors include relatively large capacitance, stable and reliable performance, and low parasitic losses. However, these capacitors have a relatively high leakage current, and their performance can be affected by high temperatures.

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