# WI0805QD100MST-HF

**DDY** · Inductors (SMD) · 0805

WI0805QD100MST-HF from DDY, in a 0805. 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 | DDY |
| Package | 0805 |
| 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 (M, ±20%) |  | -20 |  | 20 | % |  | 5 |
| Rdc tolerance | Rdc | -30 |  | 30 | % |  | 5 |
| DC resistance (Rdc) max | Rdc |  |  | 0.53 | Ω |  | 5 |
| Operating temperature |  | -40 |  | 85 | °C |  | 4 |
| Storage temperature |  | -10 |  | 40 | °C | Storage, R.H. 65% max | 4 |
| Inductance L (nominal) | L |  | 10 |  | µH | Freq 1 MHz | 5 |
| Q factor | Q |  | 10 |  |  | Freq 1 MHz | 5 |
| Self-resonant frequency | SRF |  | 35 |  | MHz |  | 5 |
| Saturation current | Isat |  | 410 |  | mA |  | 5 |
| Rated current | Irms |  | 450 |  | mA |  | 5 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| shell | copper |  | Area of copper wire exposed in magnetic shield | 6 |

## CAD (KiCad official)

- Symbol: `WI0805QD100MST-HF`
- Footprint: `Inductor_SMD:L_0805_2012Metric`
- 3D model: 0805 (KiCad packages3D, STEP)
- 3D model files: `wi0805qd100mst-hf-etched.step` / `wi0805qd100mst-hf-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `wi0805qd100mst-hf.step` / `wi0805qd100mst-hf.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [DDY datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603062478893174784) (7 pp, sha256 `f438f181373b3332`, retrieved 2026-10-20, 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/wi0805qd100mst-hf-datasheet.pdf)