Product Overview

The KM Series Aluminum Electrolytic Capacitors from Dongguan Shi Cheng Xing Electronics Co., Ltd. are designed for reliable performance with a high-temperature rating of 105C and a lifespan of 1000-2000 hours. These standard capacitors offer a wide operating temperature range and are suitable for various applications requiring stable electrical characteristics.

Product Attributes

• Brand: Cheng Xing
• Origin: Dongguan, Guangdong, China
• Product Name: Aluminum Electrolytic Capacitor
• Series: KM Series
• Customer Name: Lichuang
• Customer Part No.: (Refer to attachment)
• Production Date: February 3, 2021
• Version: A-0

Technical Specifications

Key Features & Performance

Dissipation Factor (tan ) at 120Hz, +20 (max)

Low Temperature Characteristics (120Hz)

Standard Ratings (D x L mm), Ripple Current (mA/rms at 120Hz, 105)

Usage Precautions

1. Circuit Design

• Use capacitors within the rated performance and environmental conditions specified in the product datasheet. Avoid: high temperatures (exceeding max operating temp), overcurrent (exceeding rated ripple current), overvoltage (exceeding rated voltage), reverse or AC voltage, and circuits with frequent rapid charge/discharge.
• Consider the lifespan of the capacitor when designing for machine longevity. For special machine performance requirements, consult R&D for custom specifications.
• Ensure complete isolation between capacitor terminals, auxiliary terminals, and circuits (positive/negative/ground).
• If the capacitor sleeve insulation is insufficient for specific requirements, do not use.
• Avoid using capacitors in environments with direct contact with water, saltwater, oil, or condensation; in atmospheres with harmful gases (sulfides, SO3, NO3, Cl2, ammonia); in direct sunlight, ozone, UV, or radioactive environments; or in conditions of vibration and shock exceeding specifications.
• When designing capacitor installation: ensure correct PCB hole spacing for terminals, provide adequate space above the safety vent, avoid placing other components or wiring directly above the vent, avoid other wiring near the capacitor on the PCB, and minimize heat-generating components around the capacitor.
• Ensure that temperature and frequency variations do not affect electrical performance. For double-sided PCBs, avoid mounting capacitors over unnecessary holes or vias. Ensure current and voltage balancing for parallel and series capacitor connections, respectively.

2. Component Installation

• When installing, do not allow terminals to directly contact each other or allow conductive materials to cause short circuits.
• Verify the installation environment: avoid contact with water, oil, condensation, direct sunlight, ozone, UV, or radioactive sources; avoid atmospheres with harmful gases; and ensure vibration and shock are within specified limits.
• When installing, ensure the capacitor's polarity is correct and discharge any residual voltage through a ~1K resistor. Do not use dropped capacitors or deformed capacitors. Ensure PCB hole spacing matches capacitor terminals. Avoid excessive force from automatic insertion machines.

3. Soldering

• Ensure solder adheres only to terminals.
• Follow specified soldering temperature, time, and number of cycles.
• Do not immerse the capacitor body in the solder solution.
• Avoid other products falling and contacting the capacitor during soldering.

4. Cleaning

• Do not clean capacitors with cleaning agents. If cleaning is necessary, adhere strictly to product specifications.
• When cleaning, manage cleaning agent contamination (conductivity, pH, specific gravity, moisture). After cleaning, do not store in cleaning liquid or sealed containers. Dry with hot air (below max operating temp) to prevent residual cleaning fluid.
• Do not use halogenated fixing agents or resin coatings.
• When using fixing or coating agents, ensure no solder residue or dirt remains between the PCB and capacitor. Dry thoroughly before application to prevent clogging of printed holes.

5. Assembly Use

• If the capacitor's safety vent opens during assembly, disconnect the main power.
• When the safety vent operates, hot gas (>100C) may be ejected; keep face away. If gas enters eyes, rinse immediately with water. Do not ingest electrolyte; if spilled on skin, wash with soap.

6. Fumigation Treatment

• When exporting products containing capacitors overseas, be cautious with halogenated fumigation (e.g., potassium bromide) due to potential corrosion from halide ions. Fumigation liquid should not directly contact products, and thorough drying is essential. Consult safety data if fumigation liquid residue or insufficient drying is suspected.

7. Storage Conditions

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

8. Disposal

• Dispose of capacitors by puncturing or crushing and then incinerating, or by handing them over to specialized waste recycling personnel if incineration is not feasible.

Part Number System Breakdown

The part number system is structured to encode various specifications of the capacitor. Key elements include:

• Series: KM Series
• Capacitance: Encoded in MFD (e.g., 104 = 0.1F, 105 = 1F, 33000 = 33000F)
• Voltage: Encoded by code (e.g., 6R3 = 6.3V, 10 = 10V, 450 = 450V)
• Tolerance: Encoded by letter (e.g., J = 5%, M = 20%)
• Sleeve Material: Encoded by color/type (e.g., Transparent yellow, Silvery)
• Shape Code: Encoded by type (e.g., Finite height, Convex, Plane)
• Printing Color: Encoded by color (e.g., Light purple, Sky blue)
• Others: Special features, case size, lead pitch, etc.