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Eaton HSL1225-3R8127-R Supercapacitor 120 F / 3.8 V Hybrid Cell
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pEaton HSL1225-3R8127-R — supercapacitor, 120 F, 3.8 V rated./p
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Eaton HSL1225-3R8127-R Supercapacitor 120 F / 3.8 V Hybrid Cell
The HSL1225-3R8127-R from Eaton stores 120 F, rated 3.8 V, ESR 212 mΩ.
Technical Data
| Parameter | Rating |
|---|---|
| Parameter | Value |
| Orderable part number | HSL1225-3R8127-R |
| Capacitance | 120 F |
| Maximum working voltage | 3.8 V |
| Maximum ESR | 212 mΩ |
| Stored energy | 241 mWh at rated voltage |
| Capacitance tolerance | -20%/+50% |
| Case | Ø12 x 25 mm (nominal) |
| Operating temperature | -40 to +65 °C |
| Terminals | axial lead |
| Series | HSL - Hybrid Cell |
| RoHS | Compliant (-R suffix) |
Practical Notes
- Watch the voltage derating curve before sizing the bank.
- Series resistance and cell balancing affect usable life.
- Confirm terminal torque and busbar alignment at assembly.
- Cells in series need balancing — imbalance shortens the whole string.
- Keep the string voltage under the module rating at end of charge, not just nominal.
Application Scenarios
Common installation contexts include:
- battery
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