Eaton TV1245-3R0346-R is a TV series high-power supercapacitor (EDLC) suitable as an energy reserve, for backup power, smoothing power spikes and supporting batteries in industrial, IoT and electronics applications. The component offers a large 34 F capacitance, low ESR and long lifetime for demanding energy storage solutions.
- Manufacturer: Eaton
- Model number: TV1245-3R0346-R
- Product series: TV Series
- Type: EDLC supercapacitor (Electric Double Layer Capacitor)
- Capacitance: 34 F
- Rated voltage: 3 VDC
- Tolerance: -10% / +30%
- ESR: 16 mΩ
- Connection: Radial leads, through hole (Through Hole)
- Lead spacing: 5 mm
- Diameter: 12.9 mm
- Height: 49 mm
- Operating temperature: -40 °C ... +65 °C
- Lifetime: 1000 h @ +85 °C
- RoHS compliant
Typical applications
- RTC and memory backup
- UPS and backup power
- Measuring instruments and IoT devices
- Energy harvesting systems
- Power spike smoothing
- Industrial automation and embedded systems
In practice this is sufficient for example:
- LED (20 mA, 3 V) → about 1.5 hours
- Microcontroller (10 mA, 3 V) → about 4 hours
- To support ESP32 WiFi transmission bursts → several minutes or tens of minutes depending on the usage profile
- To back up a clock (RTC) or memory → days or weeks
- Short-term backup power during a power outage, for example to allow a controlled shutdown of the device
For larger loads the energy is exhausted quickly:
- 1 W load → about 2.5 minutes
- 5 W load → about 30 seconds
- 10 W load → about 15 seconds
