GuangDong TOPAZ Electronic Technology Co., Ltd. - Aluminum Electrolytic Capacitor Guidelines

This document provides essential guidelines for the optimal performance and extended lifespan of Aluminum Electrolytic Capacitors manufactured by GuangDong TOPAZ Electronic Technology Co., Ltd. It covers critical aspects of capacitor usage, handling, and application to ensure reliability and prevent damage.

Product Attributes

Brand: TOPAZ
Origin: China
Product Type: Aluminum Electrolytic Capacitor

Technical Specifications

Item	Description	Details
Polarity	DC electrolytic capacitors are polarized. Ensure correct polarity to prevent short circuits or damage. Use bipolar capacitors when polarity is uncertain. DC electrolytic capacitors are not suitable for AC applications.
Bipolar Capacitors	Suitable for pulse circuits and polarity reverse circuits. Not applicable for 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. Exceeding rated voltage increases leakage current and may cause damage.
Ripple Current	Do not allow excessive ripple current. Exceeding permissible limits causes heating, capacitance reduction, and damage. Ripple current should generally not exceed 80% of the rated value.
Charge/Discharge Circuits	For circuits with rapid charge/discharge cycles, use specially designed capacitors to prevent damage, capacitance decrease, and heat rise.
Operating Temperature	Capacitor characteristics vary with temperature. Lower temperatures ensure longer life.
Temperature & Life Relationship	Life is related to operating temperature. A 10C reduction in temperature can double the lifespan compared to rated temperature. Formula provided for calculation: Ls = L0 * 2^((T0-Tx)/10) * sqrt((I0/Ix)*(Tm-Tm)/(Tm+Tm))	L0: Useful life at ripple current Istd, max temp T0 T0: Max Operating Temp Tx: Actual Operating Temp Tm: 5 Ix: Actual Ripple Current I0: Rated Ripple Current
Operating Frequency	Capacitance is typically measured at 100Hz or 120Hz. Capacitance decreases and tg increases with higher frequencies, leading to increased ambient temperature.
Storage	Capacitors stored for a long time may have increased leakage current and reduced withstand voltage. Before use, gradually apply DC voltage up to the rated voltage.
Case Insulation	The capacitor case is not insulated from the cathode terminal. If case insulation is required, implement insulation 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 prevent internal structural damage.
Circuit Board Cleaning	Use recommended solvents (Methanol, Isopropanol, Ethanol, etc.) for cleaning. Avoid halogenated solvents (trichlorethylene, xylene, acetone) to protect the sleeve, marking, and sealing materials.
Soldering	Keep soldering irons away from plastic sleeves. For solder bath dipping, maintain temperature within 260C and duration not exceeding 10 seconds to prevent damage.
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.

2304140030_Guangdong-TOPAZ-Elec-Tech-ECRE1321220M401P00_C156669.pdf

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