381LQ472M080A022 Allicdata Electronics
Allicdata Part #:

381LQ472M080A022-ND

Manufacturer Part#:

381LQ472M080A022

Price: $ 0.00
Product Category:

Capacitors

Manufacturer: Cornell Dubilier Electronics (CDE)
Short Description: CAP ALUM 4700UF 20% 80V SNAP
More Detail: 4700µF 80V Aluminum Electrolytic Capacitors Radial...
DataSheet: 381LQ472M080A022 datasheet381LQ472M080A022 Datasheet/PDF
Quantity: 1000
Lead Free Status / RoHS Status: Lead free / RoHS Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)
1 +: 0.00000
Stock 1000Can Ship Immediately
$ 0
Specifications
Series: 381LQ
Packaging: Bulk 
Lead Free Status / RoHS Status: --
Part Status: Obsolete
Moisture Sensitivity Level (MSL): --
Capacitance: 4700µF
Tolerance: ±20%
Voltage - Rated: 80V
ESR (Equivalent Series Resistance): 60 mOhm @ 120Hz
Lifetime @ Temp.: 2000 Hrs @ 105°C
Operating Temperature: -40°C ~ 105°C
Polarization: Polar
Ratings: --
Applications: General Purpose
Ripple Current @ Low Frequency: 3.3A @ 120Hz
Ripple Current @ High Frequency: 3.8A @ 20kHz
Lead Spacing: 0.394" (10.00mm)
Size / Dimension: 1.378" Dia (35.00mm)
Height - Seated (Max): 1.260" (32.00mm)
Surface Mount Land Size: --
Mounting Type: Through Hole
Package / Case: Radial, Can - Snap-In
Description

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Aluminum electrolytic capacitors are used in a wide range of electronics and are built with a structure of anodized aluminum, which are etched into very fine parallel plates. The plates are then separated by a gel or liquid electrolyte. Using the model number 381LQ472M080A022 as an example, aluminum electrolytic capacitors are broken down into three key areas to understand, the structure, application field, and working principle.

Capacitor Structure

At the core of all aluminum electrolytic capacitors are their aluminum and electrolyte material choice. An anodized aluminum cylinder is etched with extremely fine aluminum oxide, which acts as the two capacitor plates. The two plates are then separated by two different liquids: an electrolyte and a gel, both of which provide different benefits. The electrolyte is a highly conductive material which helps with its electrical and thermal properties. The gel is a much more viscous mix which helps adds stability and protection against longer term damage.

The cap also has a dielectric oxide layer - an insulating layer between the plates that helps protect against electrical leakage. This film plays an essential role in the capacitor’s efficiency and its longevity. The activation process forms the dielectric oxide layer and can involve a controlled voltage. Having this step included during production allows the cap’s voltage rating to be optimized.

Modern aluminum electrolytic capacitors may also include external varistors and/or internal temperature detection or self-diagnosis circuitry. These components add additional benefits and features to the cap.

Application Field

Aluminum electrolytic capacitors find a wide variety of use in electronics. They are often used in power supplies, audio, and RF applications. Voltage regulators, computers, appliances, and vehicles all make use of these caps in their everyday applications. They are often found at the output side of a power supply, helping to provide a clean voltage level. In motor control circuits, caps are employed to help with the speed and torque control.

The majority of aluminum electrolytic capacitors are polarized and for this reason, they are usually used in situations where the voltage is stable. If the voltage fluctuates often, then tantalum capacitors are often chosen due to their non-polarized nature. In situations that need a large capacitance, electrolytics become the capacitor of choice as they offer much higher capacitance than most other types.

Working Principle

The working principle of electrolytic capacitors is relatively the same as any other type of capacitor. However, their operation relies on the chemistry of the electrolyte and the oxide layer. When a voltage is applied, an electrical current creates an electric field within the plates. This electric field reorganizes the molecules in the electrolyte, resulting in the electrical charge building up and stored. The stored charge will stay in the capacitor until it is either fully discharged or the voltage is removed.

When selecting an electrolytic capacitor for a specific application, it is important to consider the spec ratings including temperature, capacitance, leakage current, and ripple current. All of these factors are key in determining the appropriate use of the cap to ensure it performs properly and provides a certain level of reliability.

In conclusion, the model number 381LQ472M080A022 aluminum electrolytic capacitors provide many benefits as well as features essential for reliable performance in a wide range of applications. It is critical to understand the various components that make up the design, the application fields, and the working principle, so that any project or system relying on them will function correctly and reliably.

The specific data is subject to PDF, and the above content is for reference

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