AHD475M35B12B

Series:	AHD
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Obsolete
Moisture Sensitivity Level (MSL):	--
Capacitance:	4.7µF
Tolerance:	±20%
Voltage - Rated:	35V
ESR (Equivalent Series Resistance):	45.9 Ohm @ 120Hz
Lifetime @ Temp.:	5000 Hrs @ 105°C
Operating Temperature:	-40°C ~ 105°C
Polarization:	Polar
Ratings:	--
Applications:	General Purpose
Ripple Current @ Low Frequency:	17mA @ 120Hz
Ripple Current @ High Frequency:	28.9mA @ 10kHz
Impedance:	12 Ohms
Lead Spacing:	--
Size / Dimension:	0.157" Dia (4.00mm)
Height - Seated (Max):	0.228" (5.80mm)
Surface Mount Land Size:	0.169" L x 0.169" W (4.30mm x 4.30mm)
Mounting Type:	Surface Mount
Package / Case:	Radial, Can - SMD

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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors (AECs) are widely used and versatile components of electric and electronic circuits, consisting of a cylindrical electrical conductor, usually made of aluminum foil, and a dielectric layer such as paper, plastic, or mica. The capacitor is made by electrochemical process, which brings about a very thin oxide layer between two dissimilar metals. This layer, also known as a dielectric, acts to insulate opposing charges. These capacitors are able to store and release electrical energy much faster than most other types of capacitors, making them ideal for a variety of applications such as power management, signal conditioning, filtering, electronic tuning, and energy storage.The AHD475M35B12B capacitor is a type of AEC, which is made by Knowles Capacitors. It features a capacity of 47µF (microfarads) and a voltage rating of 35V, with a maximum working temperature of 125°C. It has a long life expectancy, with an estimated service life of 2000 hours at a temperature of 85°C. This capacitor has a rated ripple current of 15mA and a maximum capacitance variation of ±20% at recommended working temperature. This capacitor is designed for use in applications such as motor drives, consumer appliances, power supplies, and computer monitors.In terms of working principle, AECs work by utilizing the process of electrolysis, which is the process of transferring electrons from one metal to another. In the case of an AEC, this process takes place between two dissimilar metals, such as an aluminum foil and a dielectric layer (paper, plastic, or mica). The electrolytic process takes place when a small voltage is applied to the capacitor, causing a metal ion from the foil electrode to be attracted to the dielectric layer. This creates a metal-oxide-metal (MOM) stack, which acts as an insulator and allows the capacitor to store electrical energy. As electricity flows through the capacitor, the electrons will flow from one electrode to the other, creating a flow of current known as capacitance.When using aluminum electrolytic capacitors, there are some important points to keep in mind. These capacitors have a limited life expectancy and should not be operated outside of their manufacturer recommended specifications. Over time, the dielectric layer will wear out and capacitance will decrease, so it is important to adhere to the rated voltage, temperature, and ripple current for the application. In addition, it is important to check the capacitance value before using the capacitor, as it may change after time due to wear and tear.In conclusion, the AHD475M35B12B capacitor is a highly versatile aluminum electrolytic capacitor with multiple applications in the fields of motor drives, consumer appliances, power supplies, and computer monitors. Its long life expectancy and high capacitance make it an ideal choice for a variety of circuit designs. It is important to adhere to the manufacturer recommended specifications and to check the capacitance value regularly for reliable and safe operation.

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