Aluminum Electrolytic Capacitor Guidelines

This document provides essential guidelines for the optimal performance and extended lifespan of Aluminum Electrolytic Capacitors. Please read these instructions carefully before use.

Product Attributes

Brand: TOPAZCON (GuangDong TOPAZ Electronic Technology Co., Ltd.)
Origin: China

Technical Specifications

The following guidelines detail critical usage parameters for Aluminum Electrolytic Capacitors:

Guideline	Description
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.
Bipolar Capacitors	Suitable for pulse and polarity reverse circuits only. Not applicable for pure AC or high ripple current circuits.
Operating Voltage	Do not exceed the rated voltage. Recommended working voltage is 70-80% of rated voltage for extended life. Exceeding rated voltage increases leakage current and may damage the capacitor.
Ripple Current	Do not allow excessive ripple current. Exceeding permissible limits causes heating, capacitance reduction, and damage. Generally, ripple current should not exceed 80% of the rated value.
Charge/Discharge Circuits	Use specially designed capacitors for circuits with frequent charge/discharge cycles to prevent damage, capacitance decrease, and heat rise.
Operating Temperature	Capacitor characteristics vary with temperature. Lower operating temperatures ensure longer life. Capacitance and leakage current increase at higher temperatures; capacitance and leakage current decrease at lower temperatures.
Temperature and Life Relationship	Capacitor life is temperature-dependent. Reducing the operating temperature by 10 can double the lifespan compared to rated temperature. Formula provided for calculation: Ls = L0 * (2^((T0-Tx)/10)) * ( (I0/Ix)^2 ). (Note: Formula characters are not fully rendered in input.)
Operating Frequency	Capacitance is typically measured at 100Hz or 120Hz. Capacitance decreases and tg increases with higher frequencies, leading to increased ambient temperature.
Long-Term Storage	For capacitors stored for extended periods, apply rated DC voltage gradually before use. Storage may increase leakage current and decrease withstand voltage.
Case Insulation	The capacitor case is not insulated from the cathode terminal. If case insulation is required, implement insulation measures at the mounting point.
Terminal/Lead Force	Do not apply excessive force to terminals or leads to prevent breakage, separation, or internal connection failure.
Bending Leads	When bending leads for horizontal mounting, maintain a 2mm safe spacing from the capacitor body to avoid structural damage.
Circuit Board Cleaning	Use recommended cleaning solvents like methanol, isopropanol, ethanol, isobutanol, petroleum ether, propane, and general detergents. Avoid halogenated solvents (e.g., trichlorethylene, xylene, acetone) to protect the capacitor body.
Soldering	Maintain distance between the soldering iron and the plastic insulating sleeve. For solder bath dipping, recommended temperature is within 260 for no more than 10 seconds to prevent damage.
Hole Layout on PCB	Ensure mounting hole spacing on the circuit board matches lead spacing to avoid stress on leads. Consider hole layout carefully to prevent solder splashing onto the capacitor body.

2304140030_Guangdong-TOPAZ-Elec-Tech-ECRG08124R7M201P00_C156800.pdf

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