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, including polarity, voltage, current, temperature, frequency, storage, handling, soldering, and circuit board design.

Product Attributes

Brand: TOPAZCON
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 if polarity is uncertain. Not suitable for AC applications.	Bipolar capacitors are for pulse and polarity reverse circuits, not pure AC or high ripple.
Voltage	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 damage the capacitor.
Ripple Current	Do not allow excessive ripple current. It can cause heating, capacitance reduction, and damage. Keep ripple current within allowable limits, generally not exceeding 80% of rated current.
Charge/Discharge Cycles	Use specially designed capacitors for circuits with rapid, repeated charge and discharge cycles to prevent damage, capacitance decrease, and heat rise.
Operating Temperature	Capacitor characteristics vary with temperature. Lower temperatures ensure longer life.	Higher temperatures: increased capacitance, leakage current; decreased tg. Lower temperatures: decreased capacitance, leakage current; increased tg.
Temperature & Life Relationship	Life is related to operating temperature. A 10 reduction in temperature can double the lifespan at rated temperature.	Formula provided for life calculation: Ls = L0 * 2^((T0-Tx)/10) * sqrt(I0/Ix) * (10 - (Tx-Tm))/5)
Operating Frequency	Capacitance is typically measured at 100Hz or 120Hz. Capacitance decreases and tg increases with higher frequencies, leading to increased ambient temperature.
Storage	For capacitors stored long-term, apply rated DC voltage gradually before use. Long storage may increase leakage current and decrease withstand voltage.
Case Insulation	The capacitor case is not insulated from the cathode terminal. Insulate the case at the mounting point if line insulation is required.
Handling	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 distance from the capacitor body to prevent internal structural damage.
Cleaning	Clean circuit boards with recommended solvents (Methanol, isopropanol, ethanol, isobutanol, petroleum ether, propanol, detergents). Avoid halogenated or similar solvents (trichloroethylene, xylene, acetone) to protect the sleeve, marking, and sealing materials.
Soldering	Keep soldering irons away from plastic sleeves. When dipping in solder bath, maintain temperature within 260 and duration not exceeding 10 seconds to avoid damaging the capacitor unit.
PCB Hole Layout	Ensure mounting hole spacing equals lead spacing to avoid stress on leads, short circuits, or circuit damage. Consider hole layout carefully to prevent solder splashing onto the sleeve.

2304140030_Guangdong-TOPAZ-Elec-Tech-ECRE0611101M035P9C_C156599.pdf

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