# CS1E221M-CRE77

**ST Semtech** · Aluminum Electrolytic Capacitors - SMD · CP_Elec_6.3x7.7

CS1E221M-CRE77 from ST Semtech, in a CP_Elec_6.3x7.7. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | + | passive | Positive terminal (pad 1 of the CP_ footprint; symbol and 3D mark the + end). |
| 2 | - | passive | Negative terminal. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ST Semtech |
| Package | CP_Elec_6.3x7.7 |
| Category | Capacitors |
| Pins | 2 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Capacitance (nominal, 220 µF code 221) |  |  | 220 |  | µF | Code 221; capacitance range 0.1~6800µF | 2 |
| Capacitance tolerance |  | -20 |  | 20 | % | at 120Hz, 20°C | 1 |
| Rated voltage (code 1E) |  |  |  | 25 | V | Rated Voltage 25V, code 1E | 2 |
| Operation temperature range |  | -40 |  | 105 | °C |  | 1 |
| Leakage current, case dia 4~10 | I_L |  |  | 3 | µA | 0.01CV or 3µA, whichever is greater; after 2 minutes application of rated voltage | 1 |
| Dissipation factor tan δ (max.), case dia 4~10, 25V | tan δ |  |  | 0.16 |  | Measurement frequency 120Hz, temperature 20°C; rated voltage 25V; case dia 4~10 | 1 |
| Impedance ratio Z(-25°C)/Z(20°C), case dia 4~10, 25V | Z(-25°C)/Z(20°C) |  |  | 2 |  | Measurement frequency 120Hz; rated voltage 25V; case dia 4~10 | 1 |
| Impedance ratio Z(-40°C)/Z(20°C), case dia 4~10, 25V | Z(-40°C)/Z(20°C) |  |  | 4 |  | Measurement frequency 120Hz; rated voltage 25V; case dia 4~10 | 1 |
| Load life capacitance change |  | -20 |  | 20 | % | After 2000 hrs application of rated voltage at 105°C; within 20% of initial value | 1 |
| Load life dissipation factor |  |  |  | 200 | % of initial specified value | After 2000 hrs application of rated voltage at 105°C; 200% or less of initial specified value | 1 |
| Resistance to soldering heat capacitance change |  | -10 |  | 10 | % | After reflow soldering and restored at room temperature; within 10% of initial value | 1 |
| Maximum permissible ripple current (8×10.5 case, 25V, 220µF) |  |  |  | 175 | mA rms | 105°C, 120Hz; case size per ripple table for code 221 at 1E (25V) column | 2 |

## CAD (KiCad official)

- Symbol: `CS1E221M-CRE77`
- Footprint: `Capacitor_SMD:CP_Elec_6.3x7.7`
- 3D model: CP_Elec_6.3x7.7 (KiCad packages3D, STEP)
- 3D model files: `cs1e221m-cre77-etched.step` / `cs1e221m-cre77-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cs1e221m-cre77.step` / `cs1e221m-cre77.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [ST Semtech datasheet](docs/cs1e221m-cre77-datasheet.pdf) (3 pp, sha256 `a004bb5b09469efe`, retrieved 2026-11-06, tier: manufacturer)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `two-terminal convention` (convention), consensus `off` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/cs1e221m-cre77-datasheet.pdf)