SAMXON RD Series Aluminum Electrolytic Capacitors

Product Overview

The SAMXON RD Series is a line of polar aluminum electrolytic capacitors (foil type) designed for use in electronic equipment. These capacitors meet IEC60384 standards and are constructed with a single-ended type, featuring terminals fixed to anode and cathode foil, wound together with paper, and impregnated with electrolyte. The wound element is enclosed in an aluminum case, sealed with end seal rubber, and finished with a vinyl sleeve. They are suitable for general electronic equipment applications where reliable performance is required.

Product Attributes

• Brand: SAMXON
• Series: RD Series
• Construction Type: Single ended, foil type
• Case Material: Aluminum
• Sleeve Material: PET
• Sealing Material: Rubber
• Lead Wire Material: Tinned CP wire (Pb Free)
• Separator Material: Electrolyte paper
• Compliance: Meets IEC60384 standards

Technical Specifications

Dimensions (mm)

Rated Voltage & Surge Voltage

Application Guidelines

1. Circuit Design

• Operating Temperature and Frequency: Electrical parameters vary with temperature and frequency. Designers should account for increases in leakage current and capacitance, and decreases in ESR at higher temperatures, and vice versa at lower temperatures. At higher frequencies, capacitance and impedance decrease while tan increases. At lower frequencies, ripple current generated heat can rise due to increased ESR.
• Common Application Conditions to Avoid: Reverse Voltage, Charge/Discharge Applications, Over voltage, Ripple Current exceeding specified values, and Pulse Current exceeding 10 times the rated ripple current at 120Hz.
• Using Two or More Capacitors in Series or Parallel: Consider voltage imbalances with series connections and ripple current imbalances with parallel connections.
• Capacitor Mounting Considerations: Ensure proper clearance for pressure relief vents, avoid circuit board runs under the capacitor, and match hole spacing to lead wire spacing.
• Electrical Isolation: Ensure complete isolation between cathode and case (except for axially leaded B types), anode terminal and other circuit paths, and extra mounting terminals and other terminals.
• Capacitor Sleeve: The vinyl sleeve is for marking and identification only and is not for electrical insulation.

2. Capacitor Handling Techniques

• Considerations Before Using: Capacitors have a finite life. Do not reuse capacitors from used equipment. Transient recovery voltage may require discharge. Leakage current may increase after long storage and can be corrected by applying rated voltage with a current-limiting resistor. Avoid using dropped, dented, or crushed capacitors.
• Capacitor Insertion: Verify capacitance, rated voltage, and polarity before insertion. Ensure correct hole spacing to avoid stress on terminals.
• Manual Soldering: Observe temperature and time specifications. Avoid stress on lead wires where they enter the capacitor seal.
• Flow Soldering: Do not immerse the capacitor body into the solder bath. Observe proper soldering conditions.
• Capacitor Handling after Solder: Avoid movement of the capacitor after soldering to prevent stress on lead wires. Do not use the capacitor as a handle. Avoid striking the capacitor after assembly.
• Circuit Board Cleaning: Use suitable cleaning solvents and temperatures. Avoid halogenated, alkali, petroleum-based solvents, xylene, and acetone unless specified. Ensure thorough drying.
• Mounting Adhesives and Coating Agents: Avoid materials containing halogenated solvents or chloroprene-based polymers. Dry thoroughly after application.

3. Precautions for Using Capacitors

• Environmental Conditions: Do not store or use in extreme temperatures, direct contact with water/oil, high humidity, toxic gases, ozone, radiation, UV rays, or excessive vibration/shock.
• Electrical Precautions: Avoid touching terminals due to potential electric shock. Do not short circuit terminals with conductive materials.

4. Emergency Procedures

• If the pressure relief vent operates, immediately turn off equipment and disconnect from power. Avoid contact with escaping electrolyte gas. Flush eyes with water if electrolyte enters, gargle if ingested, and wash skin with soap and water if contacted.

5. Long Term Storage

• Leakage current increases with long storage. Recondition capacitors stored for over one year by applying rated voltage in series with a 1000 resistor for 30 minutes. Products with date codes over eighteen months should be returned for confirmation.

6. Capacitor Disposal

• Incinerate after crushing or puncturing the can wall to prevent explosion. Incinerate at high temperatures to prevent release of toxic gases. Dispose of as solid waste, following local laws.