EEEFPC221XAP Panasonic, EEEFPC221XAP Datasheet - Page 25

• Manufacturer Part Number: EEEFPC221XAP
• Description: CAP 220UF 16V ELECT FP SMD
• Manufacturer: Panasonic

2. Capacitor Handling Techniques
2.1 Considerations Before Using
2.2 Capacitor Insertion
2.3 Manual Soldering
2.4 Reflow Soldering
2.5 Capacitor Handling after Soldering
2.6 Circuit Board Cleaning
2.7 Mounting Adhesives and Coating Agents
2.8 Fumigation
(1) Capacitors have a finite life. Do not reuse or recycle capacitors from used equipment.
(2) Transient recovery voltage may be generated in the capacitor due to dielectric absorption.
(3) Capacitors stored for a long period of time may exhibit an increase in leakage current.
(4) If capacitors are dropped, they can be damaged mechanically or electrically. Avoid using dropped capacitors.
(1) Verify the correct capacitance and rated voltage of the capacitor.
(2) Verify the correct polarity of the capacitor before insertion.
(3) Verify the correct hole spacing and land pattern size before insertion to avoid stress on the terminals.
(4) For chip type capacitors, excessive mounting pressure can cause high leakage current, short circuit, or disconnection.
(1) Observe temperature and time soldering specifications or do not exceed temperature of 350 ℃ for 3 seconds or less.
(2) If a soldered capacitor must be removed and reinserted, avoid excessive stress on the capacitor leads.
(3) Avoid physical contacts between the tip of the soldering iron and capacitors to prevent or capacitor failure.
(1) For reflow, use a thermal conduction system such as infrared radiation (IR) or hot blast.
(2) Observe proper soldering conditions (temperature, time, etc.). Do not exceed the specified limits.
(3) Two times of reflow (The 2nd reflow must be done when the capacitor becomes normal condition regarding temperature.)
(4) In our recommended reflow condition , the case discoloration and the case swelling might be slightly generated.
(1) Avoid moving the capacitor after soldering to prevent excessive stress on the lead wires where they enter the seal.
(2) Do not use the capacitor as a handle when moving the circuit board assembly.
(3) Avoid striking the capacitor after assembly to prevent failure due to excessive shock.
(2) Avoid using the following solvent groups unless specifically allowed in the specification ;
(3) A thorough drying after cleaning is required to remove residual cleaning solvents that may be trapped between the capacitor and the circuit
(4) Monitor the contamination levels of the cleaning solvents during use in terms of electrical conductivity, pH, specific gravity, or water content.
(5) Depending on the cleaning method, the marking on a capacitor may be erased or blurred.
In exporting electronic appliances with aluminum electrolytic capacitors, in some cases fumigation treatment using such halogen
compound as methyl bromide is conducted for wooden boxes.
If such boxes are not dried well, the halogen left in the box is dispersed while transported and enters in the capacitors inside.
This possibly causes electrical corrosion of the capacitors. Therefore, after performing fumigation and drying make sure that no
halogen is left.
Don’t perform fumigation treatment to the whole electronic appliances packed in a box.
(5) Dented or crushed capacitors should not be used. The seal integrity can be damaged and loss of electrolyte/shortened life can result.
(1) Circuit boards can be immersed or ultrasonically cleaned using suitable cleaning solvents for up to 5 minutes
When using mounting adhesives or coating agents to control humidity, avoid using materials containing halogenated solvents.
Also, avoid the use of chloroprene based polymers.
Harden on dry adhesive or coating agents well lest the solvent should be left.
After applying adhesives or coatings, dry thoroughly to prevent residual solvents from being trapped between the capacitor and the circuit
board.
・ Halogenated cleaning solvents : except for solvent resistant capacitor types, halogenated solvents can permeate the seal and cause
・ Alkaline solvents
・ Petroleum based solvents : deterioration of the rubber seal could result.
・ Xylene
・ Acetone
and up to 60 ℃ maximum temperatures. The boards should be thoroughly rinsed and dried.
The use of ozone depleting cleaning agents is not recommended for the purpose of protecting our environment.
board. Avoid drying temperatures, which exceed the Upper category temperature of the capacitor.
Chlorine levels can rise with contamination and adversely affect the performance of the capacitor.
Please consult us if you are not certain about acceptable cleaning solvents or cleaning methods.
If required, this voltage can be discharged with a resistor with a value of about 1kΩ.
This can be corrected by gradually applying rated voltage in series with a resistor of approximately 1kΩ.
※ The Temperature on Capacitor top shall be measured by using thermal couple that is fixed firmly by epoxy glue.
But please acknowledge that these two phenomena do not influence the reliability of the product.
Vapor heat transfer systems (VPS) are not recommended.
Panasonic Electronic Devices Co., Ltd.
: could react and dissolve the aluminum case.
: deterioration of the rubber seal could result.
: removal of the ink markings on the vinyl sleeve could result.
Engineering Draft
Application Guidelines
internal capacitor corrosion and failure.
For solvent resistant capacitors, carefully follow the temperature and time requirements based on the
specification. 1-1-1 trichloroethane should never be used on any aluminum electrolytic capacitor.
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