Sep 25, 2026Capacitor Selection
Aluminum Electrolytic Capacitor Testing: Why Readings Differ
Two LCR meters can show different capacitance values for the same aluminum electrolytic capacitor. Learn what to check before rejecting the part.
Technical Insights
Capacitor selection and reliability guides
Practical guidance on aluminum electrolytic capacitor selection, operating conditions, replacement and service life.
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Sep 24, 2026Reliability Engineering
New Capacitors, Still Tripping? Check the Pre-Charge Sequence
New DC-link capacitors, but the UPS, inverter or EV charger still trips? Learn how to check the pre-charge resistor, contactors, timing and connected loads.
Sep 23, 2026Capacitor Selection
Snap-In or Screw-Terminal Capacitors: Which One Fits Your UPS, Inverter or EV Charger?
A practical guide to choosing snap-in or screw-terminal aluminum electrolytic capacitors for UPS, inverter, energy-storage and EV charging equipment.
Sep 21, 2026Reliability Engineering
The Capacitor Bank Passes the Test. Is Every Capacitor Really Healthy?
Learn why an overall capacitance reading may hide one weak or disconnected capacitor in a parallel DC-link bank and how to inspect each branch properly.
Sep 17, 2026Reliability Engineering
Unused Does Not Always Mean Ready to Use: Long-Stored Aluminum Electrolytic Capacitors
Learn how storage time and conditions can affect leakage current, solderability and first-use checks for aluminum electrolytic capacitors.
Sep 14, 2026Reliability Engineering
Why Does an Aluminum Electrolytic Capacitor Bulge on One Side?
A practical failure-analysis guide to separating internal-pressure effects from mechanical deformation when a capacitor bulges on only one side.
Sep 12, 2026Reliability Engineering
A Capacitor That Leans: What Slight Bottom Bulging Can Tell You
A practical case study showing how a slight bottom bulge and an unstable, leaning capacitor can provide an early warning before rupture.
Sep 11, 2026Application Guides
Inside an Aluminum Electrolytic Capacitor: Foil, Separator Paper and Tab Connections
A practical look inside an aluminum electrolytic capacitor, explaining the roles of foil, separator paper, tab connections and winding control.
Sep 10, 2026
Why a Capacitor Sleeve Is Not a Complete Insulation System
A practical guide to case clearance, mounting clamps, insulating pads and creepage around aluminum electrolytic capacitors in high-voltage equipment.
Sep 8, 2026Reliability Engineering
Why Aluminum Electrolytic Capacitor Bottom Vents Open
Learn why an aluminum electrolytic capacitor’s bottom pressure-relief vent opens and how to investigate overvoltage, reverse polarity, ripple current, heat and aging.
Aug 29, 2026Capacitor Selection
450V Aluminum Electrolytic Capacitor Selection Guide
How to select a 450V aluminum electrolytic capacitor using capacitance, ripple current, ESR, temperature, endurance, case size and terminal construction.
Aug 29, 2026Application Guides
How to Select DC-Link Capacitors for UPS and Inverter Applications
A practical guide to selecting DC-link aluminum electrolytic capacitors for UPS and inverter systems using voltage, ripple current, ESR, temperature and mounting.
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Product families
Capacitor solutions referenced in our guides
Compare terminal formats, voltage ranges and application profiles across the COREVIA portfolio.
Screw Terminal Capacitors
Screw Terminal Aluminum Electrolytic Capacitors
Screw Terminal capacitors: TR, TT, TX, TF, TK, TG, TN, TM, TD, TH and TA. Representative TR: 470–820,000 µF and 2,000-hour endurance; consult the exact series datasheet for voltage and temperature limits.
Snap-in Terminal Capacitors
Snap-in Terminal Aluminum Electrolytic Capacitors
Snap-in capacitors: SP, SH, SS, SC, SF, SU, SD and SZ. Representative SP: 68–82,000 µF and 2,000-hour endurance; consult the exact series datasheet for voltage and temperature limits.
Radial Leaded Capacitors
Radial Leaded Aluminum Electrolytic Capacitors
Radial Leaded capacitors: RR, RK, RH, RS, RG, RD, RF, RL, RT and RE. Representative RR: 0.1–15,000 µF and 2,000-hour endurance; consult the exact series datasheet for voltage and temperature limits.