Please see electrical specification within this datasheet for maximum allowed ripple current.
Cautions and Warnings:
1.05 Charge and Discharge
The following conditions apply to all goods within the product series of WCAP-PTHR of
Würth Elektronik eiSos GmbH & Co. KG:
Frequent and quick charge / discharge cycles may generate heat inside the capacitor. In worst case this can cause a decrease of
capacitance, an increase of leakage current or breakdown.
1.01 Polarity
Applications with rapid charge and discharge cycles should be avoided. For assistance with your application please consult our technical
support.
An Aluminum Polymer Capacitor has a polarity. In operation this polarity needs to be considered and adhered.
Reverse voltage can damage or destroy an Aluminum Polymer Capacitor. This can finally lead to a malfunction.
If the polarity in a circuit will be switched or possibly can be reversed, the usage of a non-polar capacitor shall be applied.
The polarity of an Aluminum Polymer Capacitor is for THT radial types marked like following.
1.06 Sleeve
The sleeve material consists of PET (polyethylene terephthalate). If excessive heat is applied to the sleeve (e.g. soldering process, etc.) the
sleeve may crack or deform.
If the capacitor will be exposed to xylene, toluene or likewise and will be afterwards heated, the sleeve may crack or deform.
The terminal with shorter lead wire marks the negative terminal. On the sleeve the negative terminal is marked with a color band and
thereon are minus signs given. For further details see technical drawing on A1 dimensions in this datasheet.
The sleeve does not assure any electrical insulation. It is to avoid to use / place the product on a spot where electrical insulation is needed.
To assure electrical insulation, especially to the case of capacitor, further actions need to be taken.
1.02 Overvoltage
1.07 Storage Conditions
Avoid any overvoltage and do not apply a continuous overvoltage. If an overvoltage is applied to the capacitor, the leakage current can
increase drastically. The applied working voltage is not allowed to exceed the rated working voltage of the specific capacitor.
The storage conditions for a capacitor are recommended to be 5 °C up to 35 °C and less than 75 ꢀ rel. humidity.
Do not expose the capacitor to environments with hazardous gas, ozone, ultraviolet rays or any kind of radiation. Avoid any contact of the
capacitor with direct sunshine, saltwater, spray of water or types of oil during storage.
1.03 Operating Temperature
The capacitor shall not be operated above the operating temperature, which is stated within this datasheet of the specific capacitor. The
achievable lifetime of the capacitor is correlating to the applied temperature. In order to achieve the maximum lifetime, the capacitor should
be operated by the lowest possible temperature conditions within the application.
If a capacitor is stored for a long time without applying voltage or storage conditions of 35 °C or above and more than 75 ꢀ relative
humidity, the leakage current may increase.
The leakage current will return to normal level when applying the rated voltage to the capacitor before use. If the capacitor was stored for
more than 6 months, it is recommended to apply DC working voltage to the capacitor for 3± minutes through a 1 kΩ protective series
resistor.
1.04 Ripple Current
The applied ripple current shall not exceed the specified maximum ripple current of the capacitor.
All products shall be used before the end of the period of 10 months based on the product date code, if not a 1±± ꢀ solderability cannot be
guaranteed. The capacitance tolerance as specified within the datasheet is only valid on the date of delivery.
If a higher ripple current is applied as permitted, it can cause excessive heat generation and higher temperature inside the capacitor. This
happens due to pole change effects, if ripple current is applied to the capacitor. This can result in damage or lifetime shortage of the
capacitor and may cause deterioration.
1.08 Wave Soldering
Electrolytic capacitors are regularly not designed for usage in AC applications and ripple current is applied / based due to parasitic effects on
DC signal.
The detailed soldering instruction is given within Soldering Specification in this datasheet.
CREATED
CHECKED
GENERAL TOLERANCE
PROJECTION
METHOD
Würth Elektronik eiSos GmbH & Co. KG
EMC & Inductive Solutions
KaS
PSL
DIN ISO 0768-1m
Max-Eyth-Str. 1
DESCRIPTION
TECHNICAL REFERENCE
74638 Waldenburg
Germany
Tel. +49 (±) 79 40 945 - ±
PTEE1151±±M1±±DSPA7B±±±
ORDER CODE
WCAP-PTHR Aluminum Polymer
Capacitors
www.we-online.com
eiSos@we-online.com
870055974001
SIZE
REVISION
STATUS
DATE (YYYY-MM-DD)
BUSINESS UNIT
PAGE
±±1.±±±
Valid
0±17-±3-±1
eiCap
4/7
8.± x 11.5
This electronic component has been designed and developed for usage in general electronic equipment only. This product is not authorized for use in equipment where a higher safety standard and reliability standard is especially required or where a failure of the product is reasonably expected to cause severe personal injury or death, unless the parties have executed an agreement specifically governing such use. Moreover Würth Elektronik eiSos GmbH
& Co KG products are neither designed nor intended for use in areas such as military, aerospace, aviation, nuclear control, submarine, transportation (automotive control, train control, ship control), transportation signal, disaster prevention, medical, public information network etc.. Würth Elektronik eiSos GmbH & Co KG must be informed about the intent of such usage before the design-in stage. In addition, sufficient reliability evaluation checks for safety
must be performed on every electronic component which is used in electrical circuits that require high safety and reliability functions or performance.
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