SAMXON Aluminum Electrolytic Capacitors - 2017-2018 Index

Product Overview

SAMXON Aluminum Electrolytic Capacitors offer a comprehensive range of miniature, large can, and V-Chip series designed for various electronic applications. These capacitors are engineered for reliability, featuring extended load life, high ripple current capabilities, and low impedance characteristics. They are suitable for demanding applications including power supplies, audio equipment, and high-density circuit designs.

Product Attributes

• Brand: SAMXON
• Origin: Not explicitly stated, but manufacturing plants are listed in China.
• Certifications: RoHS Directive compliant, Halogen Free Compliant.

Technical Specifications

Application Guidelines

Circuit Design:

• Ensure operating environment and mounting conditions are within catalog specifications.
• Operating temperature and ripple current must not exceed specified limits.
• Select capacitors that meet the life requirements of the application.
• Aluminum electrolytic capacitors are polarized; avoid reverse or AC voltage. Use non-polar types for circuits with potential reversed polarity.
• Avoid rapid and frequent charge/discharge cycles; use special design capacitors for such applications.
• Do not apply excess voltage; ensure peak voltage (DC + ripple) does not exceed rated voltage.
• For series connections, ensure voltage is applied equally across capacitors using balancing resistors.
• Outer sleeve is not guaranteed as electrical insulator; use special insulated types if required.
• Do not connect blank terminals of snap-in type capacitors to circuits to prevent short circuits.
• Avoid exposure to water, brine, oil, toxic gases (HS, SO, NO, Cl, NH), ozone, UV, or radiation.
• Avoid severe vibration and physical shock exceeding specifications.
• Ensure PC board hole spacing matches lead spacing.
• Keep circuit patterns away from the capacitor safety vent.
• Provide adequate clearance above the safety vent: 2mm for 6.3~16, 3mm for 18~35, 5mm for 40+.
• For end-seal vented parts, make a corresponding hole on the PC board for gas release.
• Do not install screw terminal capacitors with end seal side down; for horizontal mounting, positive terminal must be upper.
• Electrolyte and separator paper are combustible; electrolyte is conductive. Avoid circuit patterns beneath end seals.
• Keep heat-generating components away from capacitors.
• Consider temperature and frequency effects on electrical characteristics.
• On double-sided PC boards, avoid placing capacitors over circuit patterns or unused holes.
• Adhere to specified torque for terminal screws and bracket screws.
• When paralleling capacitors, consider current balance.

Mounting:

• Do not reuse assembled capacitors in different applications.
• Discharge capacitors using a 1k resistor before handling.
• Leakage current may increase after storage over 6 months; perform voltage treatment if necessary.
• Confirm ratings and polarity before installation.
• Do not drop or use dropped capacitors.
• Avoid deforming capacitors during installation.
• Ensure lead spacing matches PC board hole spacing.
• Snap-in type capacitors (JIS 692, 693, 694, 695) should be installed tightly to the PC board.
• Avoid excessive clinch force during automatic insertion.
• Be careful of mechanical shock from automated equipment.
• Soldering conditions must be within SAMXON specifications.
• Do not tilt, lay down, or twist the capacitor body after soldering.
• Do not carry PC boards by grasping soldered capacitors.
• Prevent contact with capacitors after soldering; avoid radiated heat.
• Do not clean capacitors with halogenated cleaning agents.
• Avoid fixing or coating materials containing halogen. Remove flux and contamination from end seal gaps before coating.
• Do not apply coating material all around the capacitor body; apply partially.

Storage:

• Store capacitors at 5C to 35C, humidity less than 75% RH, out of direct sunlight.
• Capacitors stored for over one year should undergo voltage aging before use.

Disposal:

• Dispose of capacitors as industrial waste through professional waste disposal specialists.

Printed Circuit Board Cleaning:

• Halogen type organic solvents can permeate capacitors and cause corrosion due to free chlorine ions.
• Recommended cleaning agents: Water type, Alcohol type. Avoid Halogen type cleaning agents (Trichlorotrifluoroethane, Fluorotrichloromethane, Trichloroethane, Trichloroethylene, Methyl Chloride) as they are corrosive to aluminum.
• Penetration channels include clearances between rubber and aluminum case/lead wires, and permeation through the rubber end seal. Tight sealing and solvent-resistant rubber are necessary.

Basic Electrical Characteristics:

• Capacitance: Measured at 120Hz, 0.5Vrms AC with 1.5-2.0V DC bias. Decreases with increasing frequency and decreasing temperature.
• Tan (Dissipation Factor): Ratio of resistive to capacitive reactance. Increases with measuring frequency and decreases with measuring temperature.
• ESR: Composed of aluminum oxide layer and electrolyte/separator resistance. Increases with decreasing temperature. Decreases with increasing frequency.
• Impedance (Z): Opposition to AC current. Predominantly capacitive reactance at low frequencies, ESR at mid-frequencies, and inductive reactance at high frequencies. Varies with temperature due to electrolyte resistivity.
• Leakage Current: Small DC current flowing to reform the oxide layer. Decreases over time after voltage application. Increases with temperature and voltage. Measured at 20C with rated voltage through a 1,000 resistor.

Manufacturing & Quality Assurance

SAMXON adheres to stringent quality policies and assurance procedures throughout the manufacturing process, from raw material inspection to final product approval for shipment. This includes in-process inspections, statistical process control (SPC), and 100% final inspection of electrical parameters to ensure product conformity and customer satisfaction.

Environmental Compliance

SAMXON is committed to environmental protection and compliance with the European Union Restriction of Hazardous Substance (RoHS) Directive. Products do not contain Lead (Pb), Mercury (Hg), Cadmium (Cd), Hexavalent chromium (Cr6+), Polybrominated biphenyls (PBBs), or Polybrominated diphenyls (PBDEs) above specified limits. Products are also Halogen Free compliant.

Part Number System

The part number system follows a structured format: Series, Capacitance Code, Tolerance Code, Voltage Code, Case Size Code, Length Code, Feature Code, Terminal Code, Sleeve Material Code, and Product Line Code.

Taping & Packing Specifications

Detailed dimensions for taping specifications and packing quantities for various product types (Taping, Bulk, Snap-in) are provided, indicating inner and outer box quantities based on case size.

Lead Forming Specifications

Specifications for lead forming codes (CB, HE, FD, KD, EC, PC) are provided with corresponding dimensions (F, H, H1, H2, E) for various capacitor diameters.