PRECAUTIONS AND GUIDELINES (Conductive Polymer)
The NPCAPTM is a Conductive Polymer Solid Aluminum Capacitor that uses highly conductive polymer electrolytic material.
Please read the following in order to get the most out of your NPCAPTM capacitor.
The circuits described as examples in this catalog and the "delivery specifications" are featured in order to show the operations and usage of our products, however, this fact does not guarantee that the circuits are available to function in yourequipment systems.
We are not in any case responsible for any failures or damage caused by the use of information contained herein.
You should examine our products, of which the characteristics are described in the "delivery specifications" and other documents, and determine whether or not our products suit your requirements according to the specifications of your equipment systems. Therefore, you bear final responsibility regarding the use of our products.
Please make sure that you take appropriate safety measures such as use of redundant design and malfunction prevention
measures in order to prevent fatal accidents and/or fires in the event any of our products malfunction.
For Conductive Polymer Hybrid Aluminum Electrolytic Capacitors, see Precautions and Guidelines (Conductive Polymer Hybrid).
For Aluminum Electrolytic Capacitors, see Precautions and Guidelines (Aluminum Electrolytic Capacitors).

1

Designing Device Circuits

1) Types of Circuits Where NPCAP Capacitors are Not to be UsedTM

The leakage current in conductive polymer solid aluminum capacitors (hereafter called capacitors) may vary depending on
thermal stresses during soldering. Avoid the use of capacitors
in the following types of circuits:① High-impedance circuits that are to sustain voltages.
② Coupling circuits③ Time constant circuits
Because the capacitance varies depending on the environment the capacitors are used in, there is a possibility that thecapacitor can affect a time constant circuit where sensitivity
to variation in capacitance is required.
④ Other circuits that are significantly affected by leakage
current2) Circuit Design
Verify the following before designing the circuit:① The electrical characteristics of the capacitor will vary depending on differences in temperature and frequency. You
had better design after verifying the scope of these factors.
② When connecting two or more capacitors in parallel, ensurethat the design takes current balancing into account.
③ When two or more capacitors are connected in series, variability in applied voltage may cause over-voltage conditions.
Contact Nippon Chemi-Con before using capacitors connected in series.
④ Avoid putting heat generating parts either around the capacitor or on the reverse of the circuit board.

3) Use in High Reliable and Critical Applications
Consult with us in advance of usage of our products in the following listed applications. ① Aerospace equipment ② Powergeneration equipment such as thermal power, nuclear power
etc. ③ Medical equipment ④ Transport equipment (automobiles, trains, ships, etc.) ⑤ Transportation control equipment ⑥
Disaster prevention / crime prevention equipment ⑦ Highly
publicized information processing equipment ⑧ Submarine
equipment ⑨ Other applications that are not considered general-purpose applications.

4) Polarity
The NPCAPTM is a polarized solid aluminum electrolytic capacitor. Do not apply either reverse voltages or AC voltages to thepolarized capacitors, using reversed polarity may cause a shortcircuit. Refer to the catalog, product specifications or capacitor
body to confirm the polarity prior to use.

the full rated voltage. Capacitors do not require voltage derating
within the category temperature. While there are specifications
for surge voltages exceeding the rated voltage, usage conditions apply, and continued operation for extended periods oftime under such conditions cannot be guaranteed.

6) Ripple Current
Do not apply currents in excess of the rated ripple current. The
superimposition of a large ripple current increases the rate ofheating within the capacitor. When excessive ripple current is
imposed the internal temperature increases which can shorten
life and shorting may occur.

7) Operating Temperature
Use within the stated category temperature range, if used outside this range, characteristics can deteriorate potentially leading to problems.

8) Charging and Discharging the Capacitor
Do not use the NPCAPTM capacitor in circuits where the capacitor is repetitively charged and discharged rapidly. Repetitively
charging and discharging the capacitor rapidly may reduce thecapacitance or may cause damage due to internal heating. Useof a protective circuit to ensure reliability is recommended whenrush currents exceed 20A.

9) Leakage current
The leakage current may increase. After that, however, theleak-age current will gradually decrease by self-healing actionof the dielectric oxide layer when the capacitors are appliedwith a voltage less than the rated voltage within the Category
Temperature range. As the voltage is closer to the rated voltage and the temperature is closer to the upper limit of Category
Temperature range, the leakage current decreases faster.
The leakage current will increase by the following factors,① Soldering② Testing of high temperature exposure with no voltage applied, high temperature/humidity storage, temperature cycles,etc.

10) Failures and Service LifeThe failure rate at the rated voltage application of NPCAPTM
and the upper limit of the category temperature is based on
0.5%/1,000 hours (reliability level 60%) compliant with JIS C
5003. The possibility of failures is not zero, however, the actual
failure mode is as follows.

5) Operating Voltage
Do not apply a greater than rated voltage, if a voltage greaterthan the rated voltage is suddenly applied the leakage current
increases causing shorting. The peak voltage of superimposed
AC voltages (ripple voltages) on DC voltages must not exceed
Product specifications in this catalog are subject to change without notice.Request our product specifications before purchase and/or use. Please use our products based on the information contained in this catalog and product specifications.

CAT. No. E1001Y 2024

PRECAUTIONS AND GUIDELINES (Conductive Polymer)(1) Failure Modes① The principal failure mode is wear-out failure caused by a decrease in capacitance as a result of a temperature rise in the
product, and an increase in ESR, both of which eventually cause the capacitors to experience open circuit failure. In addition,a short circuit failure may occur due to excessive voltage, excessive current, excessive heat stress, or excessive physicalstress applied to the capacitors.
② The failure rate would be reduced by reducing ambient temperatures, ripple current and applying voltage.
③ If the short-circuited capacitor, which may be caused by over-voltages higher than the rated voltage or other conditions, has alarge amount of current passed through, the aluminum can of the capacitor bulges and might be expelled with odor gas
emitted.
④ The product contains flammable materials. If the short causes a spark it may ignite.
Please be careful when installing the product, its position and the layout design.
• Increase safety by using in conjunction with a protective circuit or protective equipment.
• Install measures such as redundant circuits so that the failure of a part of the equipment will not cause unstable operation.
Failure modes depend on the application conditions that lead to fail.
Primary Factors
Failure Modes

Internal Causes

Mismanaged
Production

Short Circuit
Between Electrodes
1

Dielectrical Break of
Oxide Layer

1 5
1Dielectrical Break of
Separator
Disconnection ofTerminal Construction

Open Circuit

Poor Terminal
Connection
Deterioration of
Conductive Polymer

CapacitanceDroptanδ（ESR）
Increase

2

Mechanical Stress3

Mechanical Stress5

Poor Sealing
5
3

Deterioration of
Oxide Layer
Corrosion
Intemal Pressure Rise

Local Deficiency inOxide Layer

Poor Connection

1
Rubber Bulging

Burred Foil/
Metal Particle

2

Anode Foil
Capacitance Drop

2

Unavoidable Factors
in Normal Service

2

Cathode Foil
Capacitance Drop
Leakage Current
Increase

4

3Electrochemical Reaction

Short Circuit

4

Mishandled
Application

1

3

Deterioration With Time

Excessive
Thermal Stress
Excessive
Operating Voltage
Reverse Voltage
Excessive
Ripple Current

Penetration of
Halogen Ion(2) Service Life
SMD (Chip type) and radial lead type use rubber as thesealing material, so the service life depends on the thermal
integrity of this rubber.
When long life performance is required in actual use, please
use the capacitor at lower temperature within the categorytemperature.

11) Capacitor Insulation
Insulation of the capacitor's case is not guaranteed. Ensure
electrical insulation between the capacitor case, negative electrode, positive electrode and circuit pattern.

12) Capacitor Usage Environment
Do not use/expose capacitors to the following conditions.
① Oil, water, salty water, take care to avoid storage in damp
locations.
② Direct sunlight③ Toxic gases such as hydrogen, sulfide, sulfurous acids, nitrous acids, chlorine and chlorine compounds, bromine andbromine compounds, ammonia, etc.
④ Ozone, ultraviolet rays and radiation.
⑤ Severe vibration or mechanical shock conditions beyond thelimits advised in the product specification section of the catalog.
The standard vibration condition is applicable to JIS C 5101-4.

13) Capacitor mounting① For the surface mount capacitor, design the solder land on
the PC board in accordance with the catalog or the productspecification.
② For radial capacitors, design the terminal holes on the PC
board to fit the terminal dimension of the capacitor.
③ Do not pass any circuit traces beneath the seal side of a

Excessive
Charge-Discharge Duty
Penetration of Halogen Ion
Due To Board Cleaning

capacitor. The trace must pass 1 to 2mm to the side of thecapacitor.
④ Do not pass any via holes underneath a capacitor on doublesided PC board⑤ In designing double-sided PC boards,do not locate any
copper trace under the seal side of a capacitor

2

Installing Capacitors

1) Installing① Do not reuse capacitors already assembled in equipmentthat have been exposed to power.
② The capacitor may have self charge. If this happens, discharge the capacitor through a resistor of approximately
1kΩ before use.
③ If capacitors are stored at a temperature of 35℃ or more
and more than 75%RH, the leakage current may increase.
This may also occur if the capacitors are stored for a longer
period than the period which is specified in the catalog or the
product specification. In this case, they can be reformed by
the voltage treatment through a resistor of approximately
1kΩ.
④ Verify the rated capacitance and voltage of the capacitors
when installing.
⑤ Verify the polarity of the capacitors.
⑥ Do not use the capacitors if they have been dropped on thefloor.
⑦ Do not deform the case of the capacitors.
⑧ Verify that the lead spacing of the capacitor fits the holespacing in the PC board before installing the capacitors.
⑨ Do not apply any mechanical force in excess of the limitsprescribed in the catalog or the product specification of thecapacitors. Avoid subjecting the capacitor to strong forces,

Product specifications in this catalog are subject to change without notice.Request our product specifications before purchase and/or use. Please use our products based on the information contained in this catalog and product specifications.

CAT. No. E1001Y 2024

PRECAUTIONS AND GUIDELINES (Conductive Polymer)
as this may break the electrode terminals, bend or deformthe capacitor, or damage the packaging, and may also
cause short/open circuits, increased leakage current, or
damage the appearance. Also, note the capacitors may bedamaged by mechanical shocks caused by cut the leadwire, the vacuum/insertion head, component checker or centering operation of an automatic mounting or insertion
machine.

2) Heat Resistance during Soldering
Ensure that the soldering conditions meet the specifications
recommended by Nippon Chemi-Con. Note that the leakage
current may increase or capacitance may decrease due to thermal stresses that occur during soldering, etc. Furthermore, theleakage current which rose gradually decreases, when voltage
is applied at below the category upper limit temperature.
Additionally the self repairing action is faster when voltage near
the rated voltage rather than at a higher voltage is applied at
below the category's upper temperature limit.
① Verify the following before using a soldering iron:• That the soldering conditions (temperature and time) arewithin the ranges specified in the catalog or productspecifications.
• That the tip of the soldering iron does not come into contact
with the capacitor itself.
② Verify the following when flow soldering:• Do not dip the body of a capacitor into the solder bath only
dip the terminals in. The soldering must be done on the reverse side of PC board.
• Soldering conditions (preheat, solder temperature and dipping time) should be within the limits prescribed in the catalog or the product specifications.
• Do not apply ﬂux to any part of capacitors other than theirterminals.
• Make sure the capacitors do not come into contact with anyother components while soldering.
• Flow soldering must not be used for the SMD(Chip type)
capacitors.
③ Verify the following when reflow soldering:• Soldering conditions (preheat, solder temperature and soldering time) should be within the limits prescribed in the
catalogs or the product specification.
• The heat level should be appropriate. (Note that the thermal stress on the capacitor varies depending on the type
and position of the heater in the reflow oven, and the colorand material of the capacitor.)• Please consult us about Vapor phase soldering (VPS).
• Except for the surface mount type, reﬂow soldering mustnot be used for the capacitors.
④ Do not reuse a capacitor that has already been soldered to
PC board and then removed. When using a new capacitor in
the same location, remove the flux, etc. first, and then use asoldering iron to solder on the new capacitor in accordancewith the specifications.

catalog or the product specification. In particular, ultrasoniccleaning will accelerate damage to capacitors.
• Halogenated solvents; cause capacitors to fail due tocorrosion.
• Alkali system solvents; corrode (dissolve) an aluminumcase.
• Petroleum system solvents; cause the rubber seal material
to deteriorate.
• Xylene and toluene; causes the rubber seal material todeteriorate.
• Acetone; erases the markings.
CFC alternatives or the other cleaners above; please consult
with us.
② Verify the following points when washing capacitors.
• Monitor conductivity, pH, speciﬁc gravity and the water content of cleaning agents. Contamination adversely affects
these characteristics.
• Be sure not to expose the capacitors under solvent richconditions or keep capacitors inside a closed container. In
addition, please dry the solvent sufficiently on the PC board
and the capacitor with an air knife (temperature should beless than the maximum rated category temperature of thecapacitor) for 10 minutes. Aluminum electrolytic capacitors
can be characteristically and catastrophically damaged byhalogen ions, particularly by chlorine ions, though thedegree of the damage mainly depends upon the characteristics of the electrolyte and rubber seal material. When halogen ions come into contact with the capacitors, the foil
corrodes when a voltage is applied. This corrosion causes
an extremely high leakage current which results venting
and an open circuit.
If the new types of cleaning agents mentioned below areused, the following are recommended as cleaning conditions
for some of new cleaning agents.

-Higher alcohol cleaning agents
Pine Alpha ST-100S (Arakawa Chemical)
Clean Through 750H, 750HS and 750J (Kao)Cleaning Conditions:
Using these cleaning agents, capacitors are capable of withstanding immersion or ultrasonic cleaning for 10 minutes at a
maximum liquid temperature of 60℃. Find optimum condition
for washing, rinsing, and drying. Be sure not to rub the marking
off the capacitor which can be caused by contact with othercomponents or the PC board. Note that shower cleaning adversely affects the markings on the sleeve.

-Non-Halogenated Solvent Cleaning
AK225AES (Asahi Glass)
Cleaning Conditions:
Immersion, ultrasonic or vapor cleaning for 5 minutes.
However, from an environmental point of view, these types ofsolvent will be banned in near future. We would recommend
not using them if at all possible.

3) Handling After Soldering-Isopropyl Alcohol (IPA)

Do not apply any mechanical stress to the capacitor after soldering onto the PC board.
① Do not lean or twist the body of the capacitor after soldering
the capacitors onto the PC board.
② Do not use the capacitors for lifting or carrying the assemblyboard.
③ Do not hit or poke the capacitor after soldering to PC board.
When stacking the assembly board, be careful that other components do not touch the aluminum electrolytic capacitors.
④ Do not drop the assembled board.

IPA (Isopropyl Alcohol) is one of the most acceptable cleaning
agents; it is necessary to maintain a ﬂux content in the cleaning
liquid at a maximum limit of 2 Wt.%.

4) Cleaning PC boards① Do not wash capacitors by using the following cleaning
agents. Solvent resistant capacitors are only suitable forwashing using the cleaning conditions prescribed in the5) Precautions for using adhesives and coating materials① Do not use any adhesive and coating materials containing
halogenated solvent.
② Verify the following before using adhesive and coating
material.
• Remove ﬂux and dust left over between the rubber seal
and the PC board before applying adhesive or coating materials to the capacitor.
• Dry and remove any residual cleaning agents before applying adhesive and coating materials to the capacitors. Do
not cover over the whole surface of the rubber seal with theProduct specifications in this catalog are subject to change without notice.Request our product specifications before purchase and/or use. Please use our products based on the information contained in this catalog and product specifications.

CAT. No. E1001Y 2024

PRECAUTIONS AND GUIDELINES (Conductive Polymer)
adhesive or coating materials.
• For permissible heat conditions for curing adhesives or
coating materials, please consult with us.
• Covering over the whole surface of the capacitor rubber
seal with resin may result in a hazardous condition because the inside pressure cannot be completely released.
Also, a large amount of halogen ions in resins will cause
the capacitors to fail because the halogen ions penetrate
into the rubber seal and the inside of the capacitor.
• Some coating materials, it cannot be implemented to thecapacitor.
Please note change on the surface might be caused according to the kind of solvents used for mounting adhesives
and coating agents.

from the outer resin, etc. If this happens, keep your hands
and face away from the gas. If vented gas is inhaled orcomes into contact with your eyes, flush your eyes immediately with water and/or gargle. If vented gas comes into contact with the skin, wash the affected area thoroughly withsoap and water.

6

Before the bag is opened
SMD（Chip type）
Radial6) Fumigation
In exporting or importing electronic devices, they may be exposed to fumigation with halide such as methyl bromide. Where
aluminum electrolytic capacitors are exposed to halide such as
methyl bromide, the capacitors will be damaged with the corrosion reaction with halogen ions in the same way as cleaning
agents. For the export and import, Nippon Chemi-Con considers using some packaging method and so forth so that fumigation is not required. For customers to export or import electronic
devices, semi-assembly products or capacitor components,
confirm if they will be exposed to fumigation and also consider
final condition of packaging. (Note that either cardboard or vinyl
package has a risk of fumigation gas penetration.)

3

The Operation of Devices

1) Do not touch the capacitor terminals directly.
2) Do not short-circuit the terminal of a capacitor by letting itcome into contact with any conductive object. Also, do not
spill electric-conductive liquid such as acid or alkaline solution over the capacitor.
3) Do not use capacitors in circumstances where they would be
subject to exposure to the following materials• Oil, water, salty water or damp location.
• Direct sunlight.
• Ozone, ultraviolet rays or radiation.
• Toxic gases such as hydrogen sulﬁde, sulfurous acid, nitrous acid, chlorine or its compounds, and ammonium.
• Severe vibration or mechanical shock conditions beyond
the limits prescribed in the catalog or product specification.
The standard vibration condition is applicable to JIS C 5101-4.

4

Maintenance Inspection

1) Make periodic inspections of capacitors that have been used
in industrial applications. Before inspection, turn off thepower supply and carefully discharge the electricity in thecapacitors. Verify the polarity when measuring the capacitorswith a volt-ohm meter. Do not apply any mechanical stressto the terminals of the capacitors.
2) The following items should be checked during the periodic
inspections.
① Significant damage in appearance② Electrical characteristics: Leakage current, capacitance,tanδ and other characteristics prescribed in the catalog
or product specification.
We recommend replacing the capacitors if the parts are outof specification.

5

Contingencies

1) If gas has vented from the capacitor during use, there is a
short circuit and burning, or the capacitor discharges an odor
or smoke, turn off the main power supply to the equipment
or unplug the power cord.
2) If there is a problem with the capacitor or a fire breaks out,
the capacitor may produce a burning gas or reactive gas

Storage

We recommend the following conditions for storage.
1) Store capacitors in a cool, dry place. Store at a temperature
between 5 and 35℃, with a humidity of 75% or less.
(table-1 Maximum storage term)
After the bag is opened

Within 3 years after manufacturing Within 6 months after the bag is opened
Within 3 years after manufacturing-

SMD products are sealed in a special laminated aluminumbag. Use all capacitors once the bag is opened. Return
unused capacitors to the bag, and seal it with a zipper.
Please refer to (Table -1 maximum storage term) for storage
conditions. Be sure to follow our recommendations for reflow
soldering.
2) Store the capacitors in a location free from direct contact
with water, salt water, and oil.
3) Store in a location where the capacitor is not exposed to
toxic gas, such as hydrogen sulfide, sulfurous acid, nitrous
acid, chlorine or chlorine compounds, bromine or other halogen gases, methyl bromide or other halogen compounds,
ammonia, or similar.
4) Store in a location where the capacitor is not exposed toozone, ultraviolet radiation, or other radiation.
5) It is recommended to store capacitors in their original packaging wherever possible.
6) The JEDEC J-STD-020 standard does not apply.

7

DisposalPlease consult with a local industrial waste disposal specialist
when disposing of aluminum electrolytic capacitors.

8

About AEC-Q200

The Automotive Electronics Council (AEC) was originally established by major American automotive related manufactures.
Today, the committees are composed of representatives fromthe sustaining Members of manufacturing companies in automotive electrical components. It has standardized the criteria
for stress test qualification and reliability tests forelectronic components.
AEC-Q200 is the reliability test standard for approval of passive
components in Automotive applications. It specifies the test
type, parameters and quantity, etc. for each component. The
criteria of the reliability tests such as for our main products,
Aluminum Electrolytic Capacitors are described in thisstandard.
Pursuant to the customer's specific testing requirements,
Chemi-Con submits the test results according to AEC-Q200 for
Aluminum Electrolytic Capacitors used in automotive applications on request.
An electronic component manufacturer cannot simply claim that
their product is AEC-Q200 Qualified . It can be claimed
Compliant , Capable , Available , etc., however each component must be tested per each users Qualification Test Planin order to claim AEC-Q200 status.
Please contact us for more information.

9

Response to the Substances of Concern

1) Nippon Chemi-Con aims for developing products that meetlaws and regulations concerning substances of concern.
（Some products may contain regulated substances for ex-

Product specifications in this catalog are subject to change without notice.Request our product specifications before purchase and/or use. Please use our products based on the information contained in this catalog and product specifications.

CAT. No. E1001Y 2024

PRECAUTIONS AND GUIDELINES (Conductive Polymer)
empted application）
Please contact us for more information about law-compliance status.
2) According to the content of REACH handbook (Guidance onrequirements for substances in articles which is published on
May 2008), our electronic components are articles without
any intended release . Therefore they are not applicable forRegistration for EU REACH Regulation Article 7 (1).
Reference: Electrolytic Condenser Investigation Society
Study of REACH Regulation in EU about Electrolytic Capacitor(publicized on 13 March 2008)

10

Catalogs

Specifications in the catalogs are subject to change without
notice. Test data shown in the catalogs are not assured as thewhole performance values, but typical values.
For more details, refer to JEITA RCR-2367D (March 2019) withthe title of Safety Application Guide for fixed aluminum electrolytic capacitors for use in electronic equipment .

Product specifications in this catalog are subject to change without notice.Request our product specifications before purchase and/or use. Please use our products based on the information contained in this catalog and product specifications.

CAT. No. E1001Y 2024