GuangDong TOPAZ Electronic Technology Co., Ltd. - Aluminum Electrolytic Capacitors

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

Product Attributes

Brand: TOPAZ
Origin: Guangdong, China
Product Type: Aluminum Electrolytic Capacitors
Series: LJ Series
Part Name: E-CAP

Technical Specifications

Item	Description
Polarity	DC electrolytic capacitors are polarized. Ensure correct polarity to avoid short circuits or damage. Use bipolar capacitors for uncertain polarity. Not suitable for AC applications.
Bipolar Capacitors	Suitable for pulse circuits and polarity reverse circuits. Not applicable in pure AC or high ripple current circuits.
Voltage Usage	Do not exceed rated voltage. Recommended working voltage is 70-80% of rated voltage for extended life.
Ripple Current	Do not allow excessive ripple current, which can cause 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 rapid charge and discharge cycles to prevent damage and premature failure.
Operating Temperature	Capacitor characteristics vary with temperature. Lower temperatures generally ensure longer life.
Temperature & Life Relationship	Life is approximately doubled for every 10C reduction in temperature from the maximum operating temperature. A formula is provided for calculation.
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	Capacitors stored for extended periods may experience increased leakage current and reduced withstand voltage. Apply rated DC voltage gradually before use.
Case Insulation	The capacitor case is not insulated from the cathode terminal. Insulation measures are required at the mounting point if case insulation is necessary.
Terminal/Lead Force	Do not apply excessive force to terminals or leads to prevent breakage, separation, or internal connection failure.
Lead Bending	When bending leads for horizontal mounting, maintain a 2mm safe spacing from the capacitor body to prevent internal structural damage.
Circuit Board Cleaning	Use recommended solvents (Methanol, isopropanol, ethanol, etc.) for cleaning circuit boards. Avoid halogenated or similar solvents (trichlorethylene, xylene, acetone) to protect the capacitor body.
Soldering	Maintain distance between soldering iron and plastic sleeve. Recommended solder bath temperature is within 260C for no more than 10 seconds to avoid damaging the capacitor unit.
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.

2304140030_Guangdong-TOPAZ-Elec-Tech-ECLJ0812221M025P00_C156543.pdf

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