# LQM21PN3R3MGRD

**Murata Electronics** · Inductors (SMD) · 0805

LQM21PN3R3MGRD from Murata Electronics, 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 | One terminal of the 3.3µH ±20% inductor; the drawing shows two end terminals (0.5±0.2mm wide) and does not mark polarity, rated current 1.0A at 85°C ambient. |
| 2 | 2 | passive | Other terminal of the 3.3µH ±20% inductor; the drawing shows two end terminals and no polarity, with max DC resistance 0.188Ω and 0.75A rated at 125°C ambient. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Murata Electronics |
| Package | 0805 |
| Category | Inductors, Coils, Chokes |
| 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 |
|---|---|---|---|---|---|---|---|
| Inductance |  |  | 3.3 |  | µH | nominal, catalog attribute (LCSC C162585) | catalog |
| Tolerance |  | -20 |  | 20 | % | catalog attribute (LCSC C162585) | catalog |
| Rated current |  |  |  | 1 | A | catalog attribute (LCSC C162585) | catalog |

## CAD (KiCad official)

- Symbol: `LQM21PN3R3MGRD`
- Footprint: `Inductor_SMD:L_0805_2012Metric`
- 3D model: 0805 (KiCad packages3D, STEP)
- 3D model files: `lqm21pn3r3mgrd-etched.step` / `lqm21pn3r3mgrd-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lqm21pn3r3mgrd.step` / `lqm21pn3r3mgrd.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Murata Electronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588906631933399040) (3 pp, sha256 `c6b5220496fbe113`, retrieved 2026-10-19, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-5-5` (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/lqm21pn3r3mgrd-datasheet.pdf)