Product Overview

The EF Series Aluminum Electrolytic Capacitors are designed for electronic equipment, offering high temperature performance (105C), extended life (1000 Hours), low impedance, and a compact profile (5mm height). They are suitable for a wide range of applications requiring reliable capacitance and voltage ratings from 6.3V to 35V and capacitance from 1 to 100F.

Product Attributes

• Brand: Cheng Xing ()
• Origin: Dongguan City, Guangdong Province, China
• Material: Aluminum Electrolytic
• Series: EF Series
• Standards: JIS- C-5101-4 (IEC 60384)

Technical Specifications

Usage Precautions

1. Circuit Design

• Use capacitors within the rated performance range as per product sample design specifications. Avoid conditions like high temperature (> max. operating temp.), overcurrent (> rated ripple current), overvoltage (> rated voltage), reverse or AC voltage, and frequent rapid charge/discharge cycles.
• Select capacitors with a lifespan comparable to the machine's lifespan.
• Ensure complete isolation between capacitor casing, auxiliary terminals, positive/negative terminals, and the circuit.
• If sleeve insulation is insufficient, do not use in applications with specific insulation requirements.
• Avoid using capacitors in environments with direct contact with water, saltwater, oil, condensation, or in environments filled with harmful gases (sulfides, H2SO3, HNO3, CL2, ammonia water), direct sunlight, ozone, UV, radioactive substances, or excessive vibration and shock.
• When designing capacitor installation, ensure positive/negative terminal spacing matches PCB hole spacing.
• Ensure sufficient space above the capacitor's safety vent.
• Avoid placing wiring or other components directly above the safety vent.
• Avoid placing other wiring on the PCB near the capacitor installation.
• Minimize the design and installation of heat-generating components around the capacitor and on the PCB.
• Ensure temperature and frequency variations do not affect electrical performance.
• For double-sided PCBs, avoid installing capacitors over unnecessary substrate holes and vias.
• Ensure current equalization for parallel capacitor connections and voltage equalization for series connections.

2. Component Installation

• Do not allow capacitor terminals to directly contact each other or for conductive materials to cause short circuits.
• Confirm the environment at the capacitor installation location: avoid contact with water/oil, condensation, direct sunlight, ozone, UV, radioactive rays, or environments with harmful gases. Avoid vibration and shock exceeding specifications.
• For inspection or electrical performance testing, do not reuse removed or previously energized capacitors.
• Discharge capacitors with a regenerative voltage using a ~1k resistor.
• Discharge long-term stored capacitors using a ~1k resistor under pressure.
• Confirm specifications (capacitance, rated voltage) and polarity before installation.
• Do not use dropped capacitors.
• Do not install deformed capacitors.
• Ensure capacitor terminal spacing matches PCB hole spacing.
• Avoid excessive force from automatic insertion machine grippers.
• When soldering, ensure solder does not adhere to areas other than the terminals.
• Adhere to specified soldering conditions (temperature, time, number of times).
• Do not immerse the capacitor itself in the solder solution.
• Ensure other products do not fall and hit the capacitor during soldering.
• After welding, ensure no mechanical stress is applied to the capacitor (tilting, twisting, or contact with other boards/objects).
• Do not clean capacitors with cleaning agents. If cleaning is necessary, perform within product specification limits.
• When cleaning, verify cleaning agent quality (conductivity, pH, specific gravity, moisture) and ensure no cleaning fluid residue remains after drying with hot air (below max. operating temp.).
• Do not use halogen-containing fixatives or resin coatings.
• When using fixatives or coatings, ensure no solder residue or dirt remains between the PCB and capacitor. Dry thoroughly before application to prevent clogging of printing holes.
• For screw-type products, install vertically with the pressure relief valve facing upwards, or horizontally with the pressure relief valve or positive terminal facing upwards.

3. Assembly and Use

• Ensure capacitor terminals do not directly contact each other, and prevent conductive materials from causing short circuits between positive and negative terminals.
• Verify the environment at the installed capacitor location: avoid contact with water, oil, or condensation; avoid exposure to sunlight, ozone, UV, or radioactive substances; avoid environments with harmful gases; avoid vibration and shock exceeding specifications.
• When designing the capacitor's installation, ensure: positive/negative terminal spacing matches PCB hole spacing; sufficient space is left above the safety vent; avoid placing wiring or components above the vent; avoid placing other wiring near the capacitor on the PCB; minimize heat-generating components around the capacitor and on the PCB.
• When designing electrical equipment, ensure: temperature and frequency changes do not cause electrical performance changes; on double-sided PCBs, avoid installing capacitors over unnecessary holes/vias; ensure current equalization for parallel connections and voltage equalization for series connections.

4. Regular Inspection

Capacitors used in industrial and enterprise applications require regular inspection, including visual checks and performance testing.

5. Accidental Situations

• If the capacitor's safety vent opens during assembly, immediately cut off the main power supply or unplug the power cord.
• When the safety vent operates, hot gas exceeding 100C will be ejected. Keep face away from the vent. If ejected gas enters the eyes, rinse immediately with water. Do not taste the electrolyte. If electrolyte splashes on skin, wash with soap.

6. Fumigation Treatment

When exporting electronic products containing capacitors overseas, be cautious of fumigation treatments using halides like potassium bromide, as they may cause corrosion due to halide ions. Fumigant should not directly contact electronic products, and thorough drying is necessary. If fumigant adhesion or insufficient drying is suspected, verify safety beforehand.

7. Storage Conditions

• Store indoors at temperatures between 5-30C and humidity below 75%.
• Do not store in environments or under conditions prohibited during assembly and use.

8. Disposal

Dispose of capacitors by either:

• Making a hole or crushing the capacitor before incineration.
• Entrusting them to professional waste recycling personnel if incineration is not performed.

Part Number System

The part number system is complex and includes codes for Tolerance, Sleeve Material, Shape, Series, Capacitance, Voltage, Case Size, and other features. For detailed breakdown, refer to the provided diagram.

Taping Dimensions

Diagrams and tables are provided for taping dimensions, detailing various parameters like diameter, pitch, and width for automatic insertion. Refer to the figures and corresponding tables for specific dimensions based on capacitor diameter and tape type.

General Specifications

• Scope: This specification applies to aluminum electrolytic capacitors used in electronic equipment.
• Electrical Characteristics: Includes measuring frequency (12012Hz), measuring voltage (0.5Vrms + 0.5~2.0VDC), measurement circuit details, capacitance change (within 20% of initial value), dissipation factor, leakage current, and temperature characteristics.
• Mechanical Characteristics: Includes tensile strength for wire lead and snap-in terminals, and bending strength for wire lead terminals.