Product Overview

This document provides guidelines for using Aluminum Electrolytic Capacitors to ensure optimal performance and extended lifespan. It covers essential precautions regarding polarity, voltage, ripple current, temperature, frequency, storage, handling, soldering, and circuit board design.

Product Attributes

• Brand: TOPAZCON
• Origin: Guangdong, China
• Product Type: Aluminum Electrolytic Capacitor
• Series: LJ Series

Technical Specifications

Usage Guidelines

1. Polarity: DC electrolytic capacitors are polarized. Ensure correct polarity to prevent short circuits or damage. Use bipolar capacitors for uncertain polarity. Not suitable for AC applications.
2. Bipolar Capacitors: Suitable for pulse and polarity reverse circuits, but not for pure AC or high ripple current.
3. Voltage: Do not exceed the rated voltage. Recommended working voltage is 70-80% of rated voltage for extended life.
4. Ripple Current: Do not allow ripple current to exceed permissible limits (generally not more than 80% of rated value) to prevent overheating, capacitance reduction, and damage.
5. Charge/Discharge Circuits: Use specially designed capacitors for circuits with rapid charge and discharge cycles to prevent damage from capacitance decrease and heat rise.
6. Operating Temperature: Capacitor characteristics vary with temperature. Lower temperatures ensure longer life.
7. Temperature and Life: Life is inversely proportional to temperature. A 10C reduction in temperature can double the lifespan. Formula provided for calculation.
8. Operating Frequency: Capacitance is typically measured at 100Hz or 120Hz. Capacitance decreases and tg increases with higher frequencies, leading to increased ambient temperature.
9. Long-Term Storage: For capacitors stored for extended periods, apply rated DC voltage gradually before use to address potential increases in leakage current and reduced withstand voltage.
10. Case Insulation: The capacitor case is not insulated from the cathode terminal. If insulation is required, implement it at the mounting point.
11. Force on Terminals/Leads: Avoid applying excessive force to terminals and leads to prevent breakage, separation, or internal connection failure.
12. Bending Leads: When bending leads for horizontal mounting, maintain a 2mm safety distance from the capacitor body to prevent internal structural damage.
13. Circuit Board Cleaning: Do not use halogenated solvents (e.g., trichlorethylene, xylene, acetone) for cleaning. Recommended solvents include methanol, isopropanol, ethanol, isobutanol, petroleum ether, propane, and commercial detergents.
14. Soldering: Maintain distance between the soldering iron and the plastic sleeve. For solder dipping, keep temperature within 260C and duration under 10 seconds to prevent component damage.
15. Hole Layout: Ensure mounting hole spacing on circuit boards matches lead spacing to avoid stress on leads. Consider hole layout carefully to prevent solder splashing onto the capacitor body.