# YWIF1005-R56K

**YJYCOIN** · Inductors (SMD) · 0402

YWIF1005-R56K from YJYCOIN, 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 | YJYCOIN |
| 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 |
|---|---|---|---|---|---|---|---|
| Self-resonant frequency (SRF) min | SRF | 600 |  |  | MHz |  | 2 |
| DC resistance (Rdc) max | Rdc |  |  | 1.2 | Ω |  | 2 |
| Saturation DC current (Isat) max | Isat |  |  | 200 | mA | Inductance drop approximately 30% of L0 at Isat | 2 |
| Inductance tolerance (K) |  | -10 |  | 10 | % | K = ±10% | 1 |
| Operating temperature |  | -40 |  | 85 | ℃ |  | 1 |
| Storage temperature |  | -10 |  | 40 | ℃ | R.H.: 65% Max. | 2 |
| Inductance (L) nominal | L |  | 560 |  | nH | Freq. 7.9 MHz; tolerance ±10% | 2 |

## CAD (KiCad official)

- Symbol: `YWIF1005-R56K`
- Footprint: `Inductor_SMD:L_0402_1005Metric`
- 3D model: 0402 (KiCad packages3D, STEP)
- 3D model files: `ywif1005-r56k-etched.step` / `ywif1005-r56k-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ywif1005-r56k.step` / `ywif1005-r56k.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [YJYCOIN datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603368108623486976) (5 pp, sha256 `3ee40f6fc0741c59`, retrieved 2026-10-17, 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/ywif1005-r56k-datasheet.pdf)