# T491D227M010AT

**KEMET** · Tantalum Capacitors · CASE-D-7343-31(mm)

T491D227M010AT from KEMET, in a CASE-D-7343-31(mm). 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 an unpolarised capacitor; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised capacitor; either orientation. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | KEMET |
| Package | CASE-D-7343-31(mm) |
| Category | Capacitors |
| Pins | 2 |

## Electrical characteristics

Limits from the LCSC catalog entry for this part (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Capacitance |  |  | 220 |  | µF | nominal, catalog attribute (LCSC C123717) | catalog |
| Tolerance |  | -20 |  | 20 | % | catalog attribute (LCSC C123717) | catalog |
| Operating temperature |  | -55 |  | 125 | °C | catalog description (LCSC C123717) | catalog |

## CAD (KiCad official)

- Symbol: `T491D227M010AT`
- Footprint: `Capacitor_Tantalum_SMD:CP_EIA-7343-31_Kemet-D`
- 3D model: CASE-D-7343-31(mm) (KiCad packages3D, STEP)
- 3D model files: `t491d227m010at-etched.step` / `t491d227m010at-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `t491d227m010at.step` / `t491d227m010at.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [KEMET datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586192859342491648) (23 pp, sha256 `47bd290c07415015`, retrieved 2026-10-15, 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/t491d227m010at-datasheet.pdf)