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CAP-XX Supercapacitors G-series - CAP-XX GA, CAP-XX GS, CAP-XX GW

Product overview

CAP-XX Supercapacitors G-series operate at 2.5V nom / 2.75V peak for a single cell and 5.0V nom / 5.5V peak for dual cell modules (2 cells connected in series). The operating temperature range for the G-series is -40°C to +70°C & Tmax = 70°C. CAP-XX Supercapacitors G-series include product references starting with CAP-XX GA, CAP-XX GS and CAP-XX GW.


Key Features

  • Ultra-thin prismatic cells and modules: Ideal for use in space-constrained devices.
  • Exceptional power density (up to 158 kW/litre), with best-in-class ESR (from 10 mΩ).
  • High energy density (up to 2.2 Wh/litre), offering high Capacitance in small cells.
  • True, continuous operating voltage of up to 2.75V/cell (H series; 2.9V peak).
  • High temperature rating (H series; 85°C maximum).
  • Excellent low temperature performance (G series; ~2x nominal ESR at -30°C).
  • Very low leakage current (<1 µA) and ultra-low minimum charge current (<20 µA).
  • Virtually unlimited charge-discharge cycle life.
  • Excellent frequency response (CEFFECTIVE).
  • RoHS and REACH compliant, Lead-free, Halogen-free and Conflict metal-free.
  • UL-810 and ISO 9001-2008 certified.


Typical Applications

  • Peak power for pulsed loads
    ✓ Isolate the source from fluctuations in the load (input smoothing).
    ✓ Extend battery life and run-time, especially when “old or cold”.
    ✓ Enable the use of cheaper, smaller, lower power batteries.
  • Ride-through power for mission-critical applications
    ✓ Isolate the load from fluctuations in the source (output smoothing).
    ✓ Remove the need for back-up batteries and impact-resistant connectors.
    ✓ Provide a low maintenance, uninterruptable on-board power supply.
  • Energy storage for energy harvesters and quick charge power supplies
    ✓ Environmentally friendly, low maintenance alternative to rechargeable batteries.
    ✓ Efficient charging, with minimal losses, from variable / low power sources.
    ✓ Ultra-quick charging via cable, cradle or induction to maximize operating time.


Product Range

Cells or Modules:

  • Single cells, for ultra-thin designs & primary batteries/harvesters; or
  • Dual cell modules, for rechargeable batteries & USB power supplies.


  • CAP-XX Supercapacitors G-series devices operate at 2.5V/cell (2.75V peak) and have an operating temperature range of -40°C to +70°C.
  • CAP-XX Supercapacitors H-series devices operate at 2.75V/cell (2.9V peak) and have a maximum operating temperature of +85°C.


  • “S” = 39.0mm x 17.0mm
  • “W” = 28.5mm x 17.0mm
  • “A” = 20.0mm x 18.0mm


CAP-XX Supercapacitors G-series Datasheets

CAP-XX GA109 & GA209 Datasheet v4.2 (Download PDF)
CAP-XX GA130 & GA230 Datasheet v4.1 (Download PDF)
CAP-XX GW101 & GW201 Datasheet v4.1 (Download PDF)
CAP-XX GW102 & GW202 Datasheet v4.1 (Download PDF)
CAP-XX GW103 & GW203 Datasheet v4.1 (Download PDF)
CAP-XX GW109 & GW209 Datasheet v4.1 (Download PDF)
CAP-XX GS103 & GS203 Datasheet v4.1 (Download PDF)
CAP-XX GS106 & GS206 Datasheet v4.2 (Download PDF)
CAP-XX GS108 & GS208 Datasheet v4.1 (Download PDF)
CAP-XX GS130 & GS230 Datasheet v4.2 (Download PDF)


Download PDF File for Additional Information on: Storage & Operation, Energy & Power Density, Product Names, Markings & Drawings, Transport & Storage, Packaging, Cautions and Safety & Compliance.


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Contact us for enquiries concerning this and all other products: +44 (0) 1744 762 929

Technical Data

Dual Cell Modules  (2 cells connected in series)
Voltage & Temperature Product
Body Size (mm) Thickness4


-40°C to +70°C
Tmax = 70°C

GZ215F 75 mF 150 mΩ 20.0 x 15.0 2.5 mm TBA
GA209F 90 mF 85 mΩ 20.0 x 18.0 2.0 mm 2000
GA230F 400 mF 60 mΩ 3.0 mm 2000
GW209F 160 mF 45 mΩ 28.5 x 17.0 2.0 mm 300
GW201F 400 mF 45 mΩ 2.5 mm 300
GW203F 520 mF 36 mΩ 3.0 mm 2000
GS203F 270 mF 30 mΩ 39.0 x 17.0 2.0 mm 2000
GS206F 680 mF 30 mΩ 2.5 mm 2000
GS208F 900 mF 20 mΩ 3.0 mm 2000
GS230F 1200 mF 20 mΩ 3.5 mm 200


Single Cell Devices
Voltage & Temperature Product
Body Size (mm) Thickness4


-40°C to +70°C
Tmax = 70°C

GA109F 180 mF 40 mΩ 20.0 x 18.0 1.0 mm 3000
GA130F 800 mF 30 mΩ 1.7 mm 3000
GW109F 320 mF 22 mΩ 28.5 x 17.0 1.0 mm 3000
GW103F 1040 mF 18 mΩ 1.5 mm 3000
GS103F 540 mF 14 mΩ 39.0 x 17.0 1.0 mm 3000
GS130F 2400 mF 10 mΩ 1.7 mm 3000


Name Parameter Condition Minimum Nominal Maximum
Leakage Current5 IL 23°C 1μA/F (cell) 2μA/F (cell)
RMS Current IRMS 23°C 4A - 8A
Pulse Current6 Ipeak 30A
ESR change with
Min @ +70°C
Max @ -40°C
75% of Nominal 200% of Nominal

1. Select products are available ex-stock (Standard products). The remainder are available to order.
2. Capacitance will decline and ESR will rise over time, at a rate which depends on temperature and voltage. Continuous operation at high temperature & voltage is not recommended. See Section 6 for more information on ageing and endurance.
3. DC capacitance and ESR tolerance are measured at 23°C.
4. Thickness is measured between two parallel plates with 140gm force applied.
5. Leakage current is measured after charging to nominal voltage for 120hrs at 23°C.
6. Single pulse, non-repetitive current (positive & negative terminal short-circuited).

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