EET-HD2G681LJ

Polarization:	Polar
Package / Case:	Radial, Can - Snap-In
Mounting Type:	Through Hole
Surface Mount Land Size:	--
Height - Seated (Max):	1.654" (42.00mm)
Size / Dimension:	1.378" Dia (35.00mm)
Lead Spacing:	0.394" (10.00mm)
Ripple Current @ High Frequency:	2.968A @ 10kHz
Ripple Current @ Low Frequency:	2.12A @ 120Hz
Applications:	General Purpose
Ratings:	--
Series:	TS-HD
Operating Temperature:	-25°C ~ 105°C
Lifetime @ Temp.:	3000 Hrs @ 105°C
ESR (Equivalent Series Resistance):	--
Voltage - Rated:	400V
Tolerance:	±20%
Capacitance:	680µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction

Aluminum Electrolytic Capacitors, abbreviated as AECs, are capacitors with the electrolyte of a conducting liquid. They integrate a dielectric of chemically formed aluminum oxide and a single foil printed on an anode. AECs find their use in applications that require large values of the capacitance. They are commonly used in switch-mode power supplies, and other high-frequency signal applications where high capacitance-to-volume ratios, low losses, and high ripple currents are required.

EET-HD2G681LJ Application Field and Working Principle

The EET-HD2G681LJ is an aluminum electrolytic capacitor from the EET family. These capacitors are designed for applications requiring long life and high temperature performance capabilities. With its 400V to 450V rated voltage range and -40°C to +105°C temperature range, the EET-HD2G681LJ is suitable for various automotive, DC-DC conversion and power supply applications.In terms of working principle, the EET-HD2G681LJ capacitor consists of an anode, cathode, and electrolyte. An electric current is established between the anode and cathode when a voltage is applied across them, with the current being limited by the capacitance of the capacitor. The current flows through the capacitor and creates a potential across it. The electrolyte solution, when placed between the electrodes, increases the capacitance of the device. When no voltage or electric current is flowing, the amount of charge stored on the device is the same as the amount of charge in the electrolyte.The EET-HD2G681LJ is also designed to provide high capacitance and voltage, low ESR, high frequency ripple performance and excellent temperature and humidity stability. It can withstand high ripple currents and offer low equivalent series resistance (ESR). Furthermore, a miniature aluminum shell make this capacitor extremely suitable for limited space applications.

Advantages and Disadvantages

Aluminum electrolytic capacitors, like the EET-HD2G681LJ, offer a number of advantages when compared to other types of capacitors. First and foremost, they have the highest capacitance values and the ability to withstand large ripple currents. This makes them ideal for power supply and DC-DC conversion applications, as they can deliver greater power better than other types of capacitors. In addition, AECs are much smaller in size compared to other kinds of capacitors. That allows them to be used in applications where space is limited. This miniaturization gives them a distinct advantage over other types of capacitors in terms of power density, while also providing excellent thermal characteristics.However, AECs do come with some drawbacks. They are more prone to failure than other types of capacitors, and they require a high operating voltage to ensure optimal performance. Given their high capacitance, they can also create unwanted noise in certain applications. Furthermore, they tend to be more expensive than other types of capacitors due to their higher quality components and complexity of manufacturing process.

Conclusion

In conclusion, the EET-HD2G681LJ aluminum electrolytic capacitors are a great choice for applications requiring high capacitance, high voltage, and high frequency ripple performance. They can provide precise capacitance values with excellent temperature and humidity stability, while also offering low equivalent series resistance and a miniaturized form factor. While they do come with some drawbacks such as a higher cost and possible failure, they are perhaps the best option for applications that require high power density and where space is a limiting factor.

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