MUNDORF ECAP100 (p.18)

MUNDORF ECAP100, Electrolytic capacitors, bipolar, raw foil, 100V
Aluminium electrolytic capacitors are used in applications for which film capacitors are not suitable for reasons of space and/or cost. Polarised electrolytic capacitors which have the most compact design and are therefore used for very high capacities (e.g. for the voltage supply of amplifiers) cannot transfer any audio signal because audio signals are AC signals. Bipolar electrolytic capacitors such as the ECap AC series have a second aluminium foil providing AC voltage resistance and thus making them suitable for music signals.
The bipolar electrolytic capacitors of the ECap AC Audio Coupling & Signal Cap RAW series have foils with surfaces which are roughened by a special etching process, enlarging the surface. As the capacity of capacitors is  proportional to their surface, this process provides the smallest and cheapest Mundorf audio capacitors. However, this process also weakens the sound quality comparing to non-etched versions. This ECAP100 runs up to 100Vdc/35Vac, using raw foils.

- Capacity range: 10μF to 100μF
- Electric strength: 35Vac / 100Vdc
- Foil type: raw aluminium foil
- Temperature range: -40°C/ -40°F to 85°C/+185°F
- Service life: [UR · R~] 3000 hours at +85°C/+185°F
- Loss angle: tan ∂ = 0.050@1kHz