A372SM473Q040A datasheet, PDF - EEWORLD Datasheet

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A372SM473Q040A: Categoryunclassified; File Size4MB，12 Pages; ManufacturerKEMET; Websitehttp://www.kemet.com

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Screw Terminal Aluminum Electrolytic Capacitors

PEH169 Series, +105°C

Overview

Applications

Typical applications for KEMET's PEH169 capacitor

include smoothing, energy storage or pulse operation in

telecommunication demanding power supplies, process

control, AC motor control, traction, welding, and measuring.

KEMET's PEH169 Series is a long-life electrolytic capacitor

with outstanding reliability and electrical performance. The

device has a polarized all-welded design, heavy duty screw

terminals, extended cathode construction, safety vent, and

plastic insulation. The PEH169 Series winding is housed

in a cylindrical aluminum can with a reinforced molded lid

incorporating a safety vent. The sealing system is designed

for electrolyte leakage-free operation and a very low gas-

diffusion rate of electrolyte. Mechanical contact between

the winding and case allows excellent heat transfer from

the winding to the ambient, which means cooler operation.

Low ESR is the result of a low resistive paper/electrolyte

system, at least two tabs per foil and all-welded design.

Benefits

•

High performance

Long life, up to 18,000 hours at +105°C (V

, I

applied)

Low ESR and ESL

High stability, 10 years shelf life

Optimized designs available on request

Part Number System

PEH169

Series

Screw Terminal

Aluminum

Electrolytic

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Rated Voltage (VDC)

E = 10

G = 16

H = 25

K = 40

M = 63

P = 100

Q = 160

R = 200

S = 250

U = 350

Size Code

See Dimension

Table

468

Capacitance Code

(µF)

The last two

digits represent

significant

figures. The

first digit

specifies the

total number of

digits.

Version

0 = Standard

Capacitance

Tolerance

Q = −10 +30%

Stud Option

U2 = Plain Can

B2 = Threaded

mounting stud

One world. One KEMET

A4038_PEH169_105ºC • 2/7/2017

Screw Terminal Aluminum Electrolytic Capacitors – PEH169 Series, +105°C

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

A4038_PEH169_105ºC • 2/7/2017

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