Product Overview

This document provides guidelines for the proper use and handling of Aluminum Electrolytic Capacitors to ensure optimal performance and extended lifespan. It covers crucial aspects such as polarity, voltage ratings, ripple current, operating temperature, frequency, storage, and assembly considerations.

Product Attributes

• Brand: TOPAZCON
• Origin: GuangDong, China
• Product Type: Aluminum Electrolytic Capacitors
• Series: LF 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 undetermined or unknown polarity. DC electrolytic capacitors are not suitable for AC applications.
2. Bipolar Capacitors: Suitable for pulse circuits and polarity reverse circuits only. Not applicable for pure AC or high ripple current circuits.
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 excessive ripple current, which can cause heating, capacitance reduction, and damage. Generally, do not exceed 80% of the rated ripple current.
5. Charge/Discharge Circuits: For circuits with rapid charge/discharge cycles, use specially designed capacitors to prevent damage and premature failure.
6. Operating Temperature: Capacitor characteristics vary with temperature. Lower operating temperatures ensure longer life.
7. Temperature and Life Relationship: Life is extended by reducing operating temperature. For every 10 decrease, life is approximately doubled. (Formula provided in source text).
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: Capacitors stored for extended periods may experience increased leakage current and reduced withstand voltage. Before use, gradually apply rated DC voltage.
10. Case Insulation: The capacitor case is connected to the cathode terminal via the electrolyte. Ensure insulation at the mounting point if case insulation is required.
11. Terminal/Lead Force: Do not apply excessive force to terminals or leads to prevent breakage, separation, or internal connection failure.
12. Bending Leads: When bending leads for horizontal mounting, maintain a 2mm safe distance from the capacitor body to prevent internal structural damage.
13. Circuit Board Cleaning: Use recommended cleaning solvents (e.g., methanol, ethanol, isopropanol) and avoid halogenated solvents (e.g., trichlorethylene, xylene) to protect the capacitor body.
14. Soldering: Maintain distance between soldering iron and the capacitor's insulated sleeve. For solder dipping, keep temperature within 260 and duration under 10 seconds to prevent damage.
15. Hole Layout: Ensure circuit board mounting hole spacing matches lead spacing to avoid stress on leads. Consider hole layout carefully to prevent solder splashing onto the capacitor.