# EWH2EM221M35OT

**AISHI Aihua Group** · Aluminum Electrolytic Capacitors - Leaded · CP_Radial_D18.0mm_P7.50mm

EWH2EM221M35OT from AISHI Aihua Group, in a CP_Radial_D18.0mm_P7.50mm. 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 | 1 | passive | Terminal 1 of a POLARISED capacitor (Capacitors / Aluminum Electrolytic Capacitors - Leaded). Which terminal is the anode (+) is not yet recorded on this page: read it from the maker's datasheet before placing. |
| 2 | 2 | passive | Terminal 2 of a POLARISED capacitor (Capacitors / Aluminum Electrolytic Capacitors - Leaded). Which terminal is the anode (+) is not yet recorded on this page: read it from the maker's datasheet before placing. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | AISHI Aihua Group |
| Package | CP_Radial_D18.0mm_P7.50mm |
| 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 |
|---|---|---|---|---|---|---|---|
| Category temperature range (160-500 Vdc) |  | -25 |  | 105 | °C | Rated voltage 160-500 Vdc | 7 |
| Capacitance tolerance |  | -20 |  | 20 | % | Tolerance code M (±20%), at 20°C, 120Hz | 7 |
| Dissipation factor (tanδ) max, rated 160-250 Vdc | tanδ |  |  | 0.2 |  | at 20°C, 120Hz | 7 |
| Endurance capacitance change |  | -20 |  | 20 | % | 2,000 h at 105°C, DC voltage plus rated ripple current; vs initial value | 7 |
| Endurance dissipation factor (tanδ) | tanδ |  |  | 200 | % of initial specified value | 2,000 h at 105°C, DC voltage plus rated ripple current | 7 |
| Shelf life capacitance change |  | -20 |  | 20 | % | 1,000 h at 105°C, without voltage applied; vs initial value | 7 |
| Shelf life dissipation factor (tanδ) | tanδ |  |  | 200 | % of initial specified value | 1,000 h at 105°C, without voltage applied | 7 |
| Shelf life leakage current |  |  |  | 200 | % of initial specified value | 1,000 h at 105°C, without voltage applied | 7 |
| Nominal capacitance | C |  | 220 |  | µF | Capacitance code 221 in part number | 1 |
| Rated voltage |  |  | 250 |  | Vdc | Voltage code 2E in part number | 1 |

## CAD (KiCad official)

- Symbol: `EWH2EM221M35OT`
- Footprint: `Capacitor_THT:CP_Radial_D18.0mm_P7.50mm`
- 3D model: CP_Radial_D18.0mm_P7.50mm (KiCad packages3D, STEP)
- 3D model files: `ewh2em221m35ot-etched.step` / `ewh2em221m35ot-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ewh2em221m35ot.step` / `ewh2em221m35ot.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [AISHI Aihua Group datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589843010814320640) (9 pp, sha256 `c5dfec31d8b5a247`, retrieved 2026-11-06, tier: lcsc)
- **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/ewh2em221m35ot-datasheet.pdf)