# LQM21PN4R7MGRD

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

LQM21PN4R7MGRD 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 | Terminal 1 of the 4.7 µH ±20% chip inductor, rated 0.8 A at 85°C and 0.6 A at 125°C, with DC resistance 0.23 Ω ±25% across the two terminals. |
| 2 | 2 | passive | Terminal 2 of the 4.7 µH ±20% chip inductor, with self-resonant frequency 30 MHz min. and self-heating limited to a 40°C max. rise at rated current. |

## 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 |  |  | 4.7 |  | µH | nominal, catalog attribute (LCSC C86090) | catalog |
| Tolerance |  | -20 |  | 20 | % | catalog attribute (LCSC C86090) | catalog |
| Rated current |  |  |  | 800 | mA | catalog attribute (LCSC C86090) | catalog |

## CAD (KiCad official)

- Symbol: `LQM21PN4R7MGRD`
- Footprint: `Inductor_SMD:L_0805_2012Metric`
- 3D model: 0805 (KiCad packages3D, STEP)
- 3D model files: `lqm21pn4r7mgrd-etched.step` / `lqm21pn4r7mgrd-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lqm21pn4r7mgrd.step` / `lqm21pn4r7mgrd.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/8586175950132826112) (9 pp, sha256 `f5f7a02198fb4548`, retrieved 2026-10-19, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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/lqm21pn4r7mgrd-datasheet.pdf)