Supercapacitor engineering resource
Choose the right supercapacitor for your design — with the numbers to back it.
Selection guides, calculators and application notes for engineers and industrial buyers, plus direct support from sizing to supply.
Selection guides
Size capacitance, voltage and ESR step by step.
Engineering calculators
Energy, backup hold-up and series-string tools.
Custom solutions
Modules, balancing and assemblies for OEM projects.
Sourcing support
Cross-references, alternatives and volume supply.
Product families
Supercapacitor types
From coin cells for RTC backup to high-voltage modules for grid and traction.
EDLC Supercapacitors
Electric double-layer capacitors store charge electrostatically at the electrode
Winding-Type Supercapacitors
Cylindrical cells built from wound electrode foils — the workhorse format from a few farads to thousands.
Coin-Cell Supercapacitors
Low-profile button cells for RTC and memory hold-up where current is in the microamp range.
Radial-Lead Supercapacitors
Through-hole cylindrical cells for PCB mounting, typically from about 0.5 F to around 100 F.
Snap-In Supercapacitors
Larger cells with snap-in PCB terminals for higher currents and capacitance.
Combined Supercapacitors
Two or more cells assembled in series as a single component to reach higher rated voltages.
5.5V Supercapacitors
Pre-assembled 5.5 V parts for direct use on 5 V and 3.3 V logic rails.
High-Capacitance Supercapacitors
Large cells — hundreds to thousands of farads — for power assist and module building.
Supercapacitor Modules
Series/parallel assemblies with balancing, housed for system-level voltage and energy.
High-Voltage Supercapacitor Modules
Modules and racks at 100 V and above for grid, transport, and industrial drives.
Lithium-Ion Capacitors
Hybrid devices combining an EDLC-type cathode with a pre-lithiated anode for higher energy density.
Applications
Where supercapacitors solve real problems
Industrial Backup Power
Ride-through and safe-shutdown energy for controllers, drives, and data loggers.
Smart Metering
RTC hold-up, last-gasp messaging, and pulse support for metering electronics.
IoT and Wireless Devices
Pulse buffering for LoRa, NB-IoT, LTE-M and BLE transmissions.
Energy Harvesting
Storage for solar, vibration, and thermal harvesters with frequent shallow cycling.
UPS and Memory Backup
Data protection for SSDs, RAID controllers, and DC UPS ride-through.
Automotive Electronics
eCall, door-lock and telematics backup, and start-stop assistance.
Renewable Energy
Wind pitch backup, PV smoothing, and microgrid power quality.
Power Assist Systems
Peak shaving and regenerative energy for hoists, AGVs, and cranking.
Industrial Automation
PLC hold-up, safe positioning, and sensor backup in factory systems.
Engineering guides
Selection know-how
How to Select a Supercapacitor: A Step-by-Step Engineering Guide
9 min read
How to Calculate Capacitance for Backup Power Applications
7 min read
Supercapacitor Voltage Rating Guide: Choosing Working Voltage and Derating
6 min read
Understanding ESR: Why Equivalent Series Resistance Matters in Pulse Applications
6 min read
Series and Parallel Supercapacitor Connections: Voltage Balancing and Design Rules
8 min read
Supercapacitor vs Battery: When to Use Which?
7 min read
Supercapacitor Energy Calculation: Formulas, Usable Energy and Backup Time
5 min read
Supercapacitor Lifetime: How Temperature and Voltage Affect Longevity
6 min read
Tell us about your application
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