# CS0402-2N7B-S

**Chilisin Elec** · Inductors (SMD) · 0402

CS0402-2N7B-S from Chilisin Elec, in a 0402. 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 inductor or ferrite bead; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised inductor or ferrite bead; either orientation. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Chilisin Elec |
| Package | 0402 |
| Category | Inductors, Coils, Chokes |
| 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 |
|---|---|---|---|---|---|---|---|
| Inductance tolerance (code B) |  | -0.1 |  | 0.1 | nH |  | 6 |
| Self-resonant frequency SRF | SRF | 10.4 |  |  | GHz |  | 6 |
| Q factor | Q | 16 |  |  |  | Test frequency 250 MHz | 6 |
| DC resistance RDC | RDC |  |  | 0.12 | Ω |  | 6 |
| Rated current Irms | Irms |  |  | 640 | mA | Irms for a 15℃ temperature rise from 25℃ ambient with current | 6 |
| Operating temperature range |  | -40 |  | 125 | ℃ | Including self-temperature rise | 6 |
| Nominal inductance L | L |  | 2.7 |  | nH | Test frequency 250 MHz | 6 |

## CAD (KiCad official)

- Symbol: `CS0402-2N7B-S`
- Footprint: `Inductor_SMD:L_0402_1005Metric`
- 3D model: 0402 (KiCad packages3D, STEP)

## Provenance

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

- **Datasheet:** [Chilisin Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588906885742776320) (15 pp, sha256 `0bad4fa3362af8de`, retrieved 2026-11-10, 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/cs0402-2n7b-s-datasheet.pdf)