Product Overview

The SAMXON WR Series Aluminum Electrolytic Capacitors are polar, foil-type capacitors designed for use in electronic equipment. They meet IEC60384 standards and are constructed with a single-ended design featuring screw terminals. These capacitors are suitable for general electronic applications requiring reliable performance and durability.

Product Attributes

• Brand: SAMXON
• Category: Aluminum Electrolytic Capacitors
• Series: WR Series
• Construction Type: Single Ended
• Terminal Type: Screw Terminal
• Sleeve Material: PVC
• Seal Material: Bakelite
• Nut Material: Aluminum
• Washer Material: Aluminum
• Tab Material: Aluminum
• Element Material: Aluminum foil & Electrolyte paper

Technical Specifications

General Characteristics

• Standard Atmospheric Conditions: Ambient temperature: 15 to 35, Relative humidity: 45% to 85%, Air Pressure: 86kPa to 106kPa. For critical measurements: Ambient temperature: 20 2, Relative humidity: 60% to 70%, Air Pressure: 86kPa to 106kPa.
• Operating Temperature Range: As specified in Table 1 (Temp. range).
• Rated Voltage (WV) & Surge Voltage (SV): See Table 2 for various voltage ratings (e.g., 10V to 500V).
• Nominal Capacitance Measurement: 120Hz 12Hz, 0.5Vrms, 20 2.
• Leakage Current Measurement: Capacitor connected with a 1k 10 protective resistor in series for 5 minutes.
• tan Measurement: Same conditions as nominal capacitance measurement.
• Terminal Strength: 2.0N.m torsion moment applied axially away from the body for 10~15s. No intermittent contacts, open/short circuits, or screw untightening.
• Temperature Characteristic: Tested at various temperatures (-40, -25, 20, 85). Dissipation Factor within limits, leakage current not more than 5 times specified value at higher temperatures. Impedance ratio (Z-25/Z+20) 8, (Z-40/Z+20) 15 for working voltages 10~500V.
• Load Life Test: 85 2 C with DC bias voltage plus rated ripple current for 2000 hours. Criteria: Leakage current within specified value, Capacitance Change within 20% of initial value, Dissipation Factor not more than 200% of specified value, no electrolyte leakage.
• Shelf Life Test: Stored at 852 for 1000+48/0 hours without voltage. Criteria: Leakage current within specified value, Capacitance Change within 20% of initial value, Dissipation Factor not more than 175% of specified value, no electrolyte leakage.
• Surge Test: 1000 cycles of 30 5s charge and 5 min 30s discharge with a (100 50)/CR (k) resistor. Criteria: Leakage current within specified value, Capacitance Change within 15% of initial value, Dissipation Factor within specified value, no electrolyte leakage.
• Vibration Test: 10Hz ~ 55Hz, 1.5mm peak to peak amplitude for 2 hours in 3 mutually perpendicular directions. Criteria: No mechanical damage, no electrolyte leakage or swelling, legible markings, no internal circuit issues.
• Change of Temperature Test: 5 cycles of temperature changes (-40/-25, +85, 20). Criteria: Leakage current and Dissipation Factor within specified values, no electrolyte leakage.
• Damp Heat Test: 5008 hours at 90~95% RH and 402. Criteria: Leakage current within specified value, Capacitance Change within 20% of initial value, Dissipation Factor not more than 120% of specified value, no electrolyte leakage.
• Vent Test: For products with vents. DC test with reversed polarity and specified current. Criteria: Vent operates without dangerous conditions.
• Maximum Permissible Ripple Current: Maximum AC current at 120Hz and maximum operating temperature. Frequency multipliers provided for different frequencies.

Environment-related Substances

Refer to the latest document of Environment-related Substances standard (WI-HSPM-QA-072) for controlled substances including heavy metals, chlorinated organic compounds, brominated organic compounds, and others.

Application Guidelines

Circuit Design: Electrical parameters vary with temperature and frequency. Consider effects on leakage current, capacitance, and ESR. Avoid reverse voltage, charge/discharge applications, over voltage, and excessive ripple current. When using capacitors in series or parallel, consider voltage and ripple current imbalances. Ensure proper mounting clearances for pressure relief vents and avoid wiring near them. Ensure electrical isolation of terminals and case. Capacitor sleeve is for marking and identification, not electrical insulation.

Capacitor Handling Techniques

Before Using: Capacitors have a finite life; do not reuse. Discharge transient recovery voltage if necessary. Long-term storage may increase leakage current, requiring reconditioning. Avoid using dropped, dented, or crushed capacitors. Insertion: Verify capacitance, rated voltage, and polarity. Ensure correct hole spacing to avoid lead stress. Soldering: Observe temperature and time specifications (e.g., max 400 for 3 seconds). Avoid stress on lead wires entering the seal. Do not touch capacitor body with soldering iron. For flow soldering, do not immerse the capacitor body. After Solder: Avoid movement of soldered capacitors. Do not use capacitors as handles. Avoid striking capacitors after assembly. Cleaning: Boards can be cleaned using suitable solvents up to 60 for 5 minutes. Thorough rinsing and drying are required. Avoid specific solvent groups (halogenated, alkali, petroleum-based, xylene, acetone) unless specified. Monitor contamination levels. Adhesives/Coatings: Avoid materials containing halogenated solvents or chloroprene-based polymers. Dry thoroughly after application.

Precautions for Using Capacitors

Environmental Conditions: Do not store or use outside rated temperature range, in contact with water/oil, high humidity, toxic gases, ozone, radiation, or exceeding vibration/shock requirements. Electrical Precautions: Avoid touching terminals due to electric shock risk. Do not short circuit terminals with conductive materials.

Emergency Procedures

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

Long Term Storage

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

Capacitor Disposal

Incinerate after crushing or puncturing to prevent explosion. Incinerate at high temperatures to prevent toxic gas release. Dispose of as solid waste, following local laws.