ALC42D272EL250 datasheet, PDF - EEWORLD Datasheet

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ALC42D272EL250: DescriptionCAPACITOR, ALUMINUM ELECTROLYTIC, NON SOLID; CategoryPassive components capacitor; File Size1MB，13 Pages; ManufacturerKEMET; Websitehttp://www.kemet.com; Environmental Compliance; Related ProductsFound8parts with similar functions to ALC42D272EL250

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ALC42D272EL250 Overview

CAPACITOR, ALUMINUM ELECTROLYTIC, NON SOLID

ALC42D272EL250 Parametric

Parameter Name	Attribute value
Is it lead-free?	Lead free
Is it Rohs certified?	conform to
package instruction	,
Reach Compliance Code	compli
ECCN code	EAR99
capacitance	2700 µF
Capacitor type	ALUMINUM ELECTROLYTIC CAPACITOR
diameter	40 mm
dielectric materials	ALUMINUM (WET)
ESR	84 mΩ
length	80 mm
Manufacturer's serial number	ALC42
negative tolerance	20%
Number of terminals	2
Maximum operating temperature	105 °C
Minimum operating temperature	-40 °C
Package form	Snap-i
polarity	POLARIZED
positive tolerance	20%
Rated (DC) voltage (URdc)	250 V
ripple current	7020 mA
series	ALC42
Terminal pitch	10 mm
Base Number Matches	1

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Snap-In Aluminum Electrolytic Capacitors

ALC42 Series, 105ºC

Overview

Applications

KEMET's ALC42 Series of capacitors is designed for applications

where high reliability and compact sizes are important, such as

switch mode power supplies (SMPS) and frequency converters.

KEMET's ALC42 Series of capacitors is a high CV snap-in

version of the ALC40 Series range. Both feature the same high

ripple currents and long-life characteristics as the ALC10 Series

but can operate at higher temperatures.

Benefits

•

Compact size

2,000 hours at +105°C (V

, I

applied)

Excellent surge voltage capability

Optimized designs available upon request

Part Number System

ALC42

Series

Snap-In type Aluminum

Electrolytic

Termination

See Termination Table

561

Capacitance Code (µF)

First 2 digits equals first 2

significant figures, 3rd digit

is the number of additional

zeros.

Size Code

See Dimension Table

200 = 200

250 = 250

350 = 350

400 = 400

450 = 450

200

Voltage (VDC)

One world. One KEMET

A4027_ALC42 • 4/15/2013

Snap-In Aluminum Electrolytic Capacitors – ALC42 Series, +105ºC

Shelf Life

The capacitance, ESR and impedance of a capacitor will not change significantly after extended storage periods, however the leakage

current will very slowly increase. KEMET products are particularly stable and allow a shelf life in excess of three years at 40°C. See

sectional specification under each product series for specific data.

Re-age (Reforming) Procedure

Apply the rated voltage to the capacitor at room temperature for a period of one hour, or until the leakage current has fallen to a steady

value below the specified limit. During re-aging a maximum charging current of twice the specified leakage current or 5 mA (whichever

is greater) is suggested.

Reliability

The reliability of a component can be defined as the probability that it will perform satisfactorily under a given set of conditions for a

given length of time.

In practice, it is impossible to predict with absolute certainty how any individual component will perform; thus, we must utilize probability

theory. It is also necessary to clearly define the level of stress involved (e.g. operating voltage, ripple current, temperature and time).

Finally, the meaning of satisfactory performance must be defined by specifying a set of conditions which determine the end of life of the

component.

Reliability as a function of time, R(t), is normally expressed as: R(t)=e-

λt

where R(t) is the probability that the component will perform satisfactorily for time t, and λ is the failure rate.

Failure Rate

The failure rate is the number of components failing per unit time. The failure rate of most electronic components follows the

characteristic pattern:

• Early failures are removed during the manufacturing process.

• The operational life is characterized by a constant failure rate.

• The wear out period is characterized by a rapidly increasing failure rate.

The failures in time (FIT) are given with a 60% confidence level for the various type codes. By convention, FIT is expressed as 1 x 10

-9

failures per hour. Failure rate is also expressed as a percentage of failures per 1,000 hours.

e.g., 100 FIT = 1 x 10

-7

failures per hour = 0.01%/1,000 hours

End of Life Definition

Catastrophic Failure: short circuit, open circuit or safety vent operation

Parametric Failure:

• Change in capacitance > ±10%

• Leakage current > specified limit

• ESR > 2 x initial ESR value

A4027_ALC42 • 4/15/2013

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