Cautions for using

1.Solid conductive polymer aluminum electrolytic capacitors are polarized.

• Using a capacitor with revested polarity causes abnormal current flow, resulting in a short circuit.

2.Prohibited Circuits

• Since leakage current problem may arise, capacitors cannot be used in the fallowing circuits.
  1. 1.Coupling circuits
  2. 2.Circuits greatly affected by leakage current

3.User capacitors within the rated voltage.

• The application of voltages exceeding the rated voltage can significantly increase leakage current, resulting in a shot failure, Please do not apply a voltage exceeding the rated voltage.

4.Be careful of excessive rush current.

• Using capacitors in the circuit where excessive rush current passes may cause characteristic deterioration or a short-circuit. When the rush current exceeds 10A, we recommend use of protection circuits to ensure high reliability.

5.Use the allowable ripple voltage and the rated ripple current below the specified values.

• Where superimposing a ripple voltage on a DC bias voltage, exercise care that the peak voltage value does not exceed the rated voltage.
• The rated ripple current shall be below the specified value.

6.Changes in characteristics due to operating temperature

• The characteristics of solid conductive polymer aluminum electrolytic capacitors vary by temperature as follows.
  These variations are temporary and recover when temperature goes back (except for the case of characteristic deterioration because of high temperatures over a long time).
  Note that using capacitors over the upper category temperature increases leakage current, resulting in a short-circuit and destruction.
  Be careful of the capacitor temperature considering not only the ambient temperature where the equipment is placed and the temperature inside the equipment but also radiation heat from the heating element inside the equipment, and self-heat generation by ripple current.
  1. 1.Capacitance expressed in the value at 20°C, 120Hz increases with increased temperature and decreases with decreasing temperature.
  2. 2.Tangent of loss angle (tan δ) expressed in the value at 20°C,120Hz is temperature -independent.
  3. 3.Equivalent series resistance (ESR) expressed in the value at 20°C, 100kHz is temperature-independent.
  4. 4.Leakage current increases with increased temperature and decreases with decreasing temperature.

7.Changes in characteristics due to frequency

• The characteristics of sold conductive polymer aluminum electrolytic capacitors vary by operating frequency as follows.
  1. 1.Capacitance expressed in the value at 20°C, 120Hz decrease with increased frequency.
  2. 2.Tangent of loss angle (tan δ) expressed in the value at 20°C, 120Hz increases with increased frequency.
  3. 3.Equivalent series resistance (ESR) expressed in the value at 20°C, 100kHz increases with decreasing frequency.

8.Failure modes of sold conductive polymer aluminum electrolytic capacitors

• The failure modes of solid conductive polymer aluminum electrolytic capacitors are a wear-out failure by deterioration of electrical performance and a random failure by a short-circuit.The failure rate level is 1%/1,000h at the reliability level of 60% with the specified voltage applied at 105°C.
• If a short-circuit occurs and continues with application of a voltage exceeding the rated voltage, increasing the internal temperature. The internal pressure increases by vaporization of the cathode material, which may cause the aluminum case to come off.

9.Operating environments

• Do not store capacitors in an environment directly exposed to water, saltwater spray, oil spill or condensation.
• Do not store capacitors in an environment filled with toxic gas such as hydrogen sulfide, sulfurous acid, nitrous acid, chlorine, ammonia, etc.
• Do not store capacitors in a place exposed to ozone, ultraviolet rays, or radiation.
• Do not use in a hand environments exceeding the specified range of vibration or mechanical shock.

10.Fumigation Process

• Before transportation of electronic equipment to overseas, fumigation process may be subjected to wooden packing material with a halogen (compound) gas such as methyl bromide. Exercise care that this halogen gas may corrode capacitors. Also, be careful of epidemic preventive agent as corrosive component such as halogen may be contained.

11.The case of solid conductive polymer aluminum electrolytic capacitors and the cathode terminal are not insulated.

• The case and the cathode terminal are not insulated as being connected through inconstant resistance.

12.Double-sided PCB's

• When using capacitors on a double-sided PCB, exercise care that the wiring pattern does not touch the area where the capacitors are mounted. Failure to do so may cause a short to occur to the PCB depending on the mounting conditions.

13.Regarding Connection of Solid Conductive Polymer Aluminum Electrolytic Capacitors

• When connecting more than one capacitor in parallel, consider the current balance.

14.Other Notes

• Do not use capacitors on a circuit where rapid charge and discharge are repeated.
• Electrical characteristics of capacitors vary by variations in temperature and frequency. Please consider these variations when designing a circuit.

1.Cautions for Mounting

• Do not reuse capacitors that have been assembled in a set and energized. Capacitors cannot be reused except for those which have been measured on electrical performance during periodic inspection.
• Before mounting, confirm the capacitor ratings (rated capacitance and rated voltage).
• Capacitors may generate transient recovery voltage. In this case, discharge through a resistor of about 1kΩ.
• Before mounting, confirm the polarity of capacitors.
• Do not drop capacitors onto a floor nor use them.
• Do not mount deformed capacitors.
• Do not mount heating parts around capacitors and on the back of the PCB (under or back of capacitors).

2.Do not apply excessive pressure to the capacitor or its terminals

• Be careful of the shock force that can be produced by absorbers, product checkers, and centering on automatic inserter and installers.

3.Soldering

• Do not solder capacitor body by dipping into melted solder.
• Soldering conditions (preheating, soldering temperature, terminal dipping time) should be within the ranges specified in the catalog or the delivery specification.
• Flux should not adhere to the parts other than the terminals.
• When using a soldering iron, avoid excessive stress to capacitor body.
• In reflow soldering, the reflow should be conducted once. Please be sure to consult with us if reflow must be conducted twice.
• Although leakage current may increase (from a few µA to hundreds of µA) after soldering, it can be reduced through self-repair by applying voltage,it is advised to operate the set properly after treating with the recommended voltage.
• In case of a long-term use of equipment, control the soldering characteristics so that capacitors and PCB do not fail to connect to avoid abnormal current passage by a failure of soldering to mount.

4.Handing after Soldering

• Do not tilt, fall, raise or twist capacitor body.
• Do not pick up or move PCB by holding a capacitor.
• Do not bump capacitors against objects. When stacking PCB's make sure that capacitors do not touch the PCB's or other components.
• Do not subject capacitors to excessive stress.

5.Cleaning after Soldering

• Recommended cleaning method
  1. 1.Cleaning solutions.
     • CLEANTHROUGH 710M,750H,750L
     • PINEALPHA ST-100S
     • Techno Care FRW-4-17
     • Isopropyl alcohol (2-propanol)
  2. 2.Cleaning conditions.
     • The temperature of cleaning solution shall be less than 60°C.
     • Use immersion or ultrasonic waves within two minutes.
     • After cleaning, capacitors and PCB's shall thoroughly be rinsed and dried with not blast for more than 10 minutes. The temperature of such breeze should be less than the upper category temperature.
     • After cleaning do not keep capacitors in cleaning solution atmosphere or airtight containers.
• During cleaning, control the cleaning solution against contamination.

6.Fixing adhesives and coating materials

• Do not use halogenated fixatives and coating.
• Before using a fixative or coating, remove flux residues and contaminants from between the PCB and the sealing section of capacitors.
• Dry the cleaning solution before using the adhesive or coating
• Do not cover up ail the sealing sections (terminal side) of capacitors with the adhesive or coating.
• Please contact us for heat curing conditions of fixative and coating.

1.Do not directly touch the terminals of solid conductive polymer aluminum electrolytic capacitors.

Failure to do so can cause electric shock or burns. Before use, allow capacitors to discharge through a 1kΩ resistor (with a sufficient margin to the heat generation capacity) as needed.

2.Do not short-circuit between the terminals of the solid conductive polymer aluminum electrolytic capacitors with electric conductor. Do not subject capacitors to conductive solutions such as acid and alkaline water solutions.

3.Periodic inspection should be performed on the capacitors for the industrial equipment application.

Check the following checkpoints.

• Visual inspection to check for significant defects.
• Electrical performance; leakage current, rated capacitance, tangent of loss angel, ESR, and items specified in the catalog or delivery specification.

4.Be careful of the following cases of emergency.

• In case of a short-circuit during use of capacitors in sets, producing gas, turn off the main power of the set or unplug the power cord from the outlet.
• In case of short-circuit, producing gas, it may take a few seconds to a few minutes depending on the conditions.
  Therefore, ensure that protective circuit of the power supply works during this time.
• If the gas gets in your eyes, rinse them immediately. Gargle if the gas is inhaled.
  Do not lick the electrolyte of capacitors.When the electrolyte gets on your skin,wash it off with soap immediately.

5.Storage Conditions

• Do not store at high temperature and high humidity. Store at a temperature of 5 to 35°C and a relative humidity of less than 75%, keep free from direct sunlight.
• During delivery, capacitors are stored in airtight aluminum moistureproof bags to ensure satisfactory soldering.
  Once the bag is opened right before mounting, it is better to use up the capacitors. If some are unavoidably left over, return them to the aluminum moistureproof bag, and seal the opening hermetically.
• Solid conductive polymer aluminum electrolytic capacitors may have increased leakage current when unused or stored for a long time after mounted on equipment. This phenomenon often occurs at high ambient temperatures; however ,leakage current will decrease through voltage treatment. If leakage current still increases after a lapse of more than one year at ambient temperature(shorter time at high temperatures), treat with voltage as needed. In design of equipment, consider the effect of increase in initial current, and install protective circuits as needed.
  Please check that recommended voltage treatment conditions are provided for each series.
• Do not store capacitors in an environment directly exposed to water spray, oil spill or condensation.
• Do not store capacitors in environment filled with toxic gas such as hydrogen sulfide, sulfurous acid, nitrous acid, chlorine, ammonia, etc.
• Do not store capacitors in a place exposed to ozone, ultraviolet rays, or radiation.

6.Please take the following actions when disposing of solid conductive polymer aluminum electrolytic capacitors.

• Entrust to specialists of industrial waste treatment for incineration.

7.Others

• Before using capacitors, check the details of this delivery specification and catalog as well as the following.

Technical Report of Japan Electronics and Information Technology Industries Association.
EIAJ RCR-2367B
Guideline of notabilia for fixed aluminum electrolytic capacitors for use in electronic equipment