# RL1218FK-070R33L

**YAGEO** · Current Sense Resistors / Shunt Resistors · 1218

RL1218FK-070R33L from YAGEO, in a 1218. 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 of the two matte-tin end terminations of the RL1218 chip resistor (3.05 x 4.60 mm body, 1 W at 70 °C, 10 mΩ ≤ R < 1 Ω); the resistor is non-polarized so terminations are interchangeable. |
| 2 | 2 | passive | The other matte-tin end termination of the RL1218 chip resistor (3.05 x 4.60 mm body, 1 W at 70 °C, 10 mΩ ≤ R < 1 Ω); the resistor is non-polarized so terminations are interchangeable. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | YAGEO |
| Package | 1218 |
| Category | Resistors |
| 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 |
|---|---|---|---|---|---|---|---|
| Resistance |  |  | 330 |  | mΩ | nominal, catalog attribute (LCSC C876306) | catalog |
| Tolerance |  | -1 |  | 1 | % | catalog attribute (LCSC C876306) | catalog |
| Rated power |  |  |  | 1 | W | catalog attribute (LCSC C876306) | catalog |
| Temperature coefficient | TCR | -250 |  | 250 | ppm/°C | catalog description (LCSC C876306) | catalog |

## CAD (KiCad official)

- Symbol: `RL1218FK-070R33L`
- Footprint: `Resistor_SMD:R_1218_3246Metric`
- 3D model: 1218 (KiCad packages3D, STEP)
- 3D model files: `rl1218fk-070r33l-etched.step` / `rl1218fk-070r33l-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rl1218fk-070r33l.step` / `rl1218fk-070r33l.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [YAGEO datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589993392135434240) (9 pp, sha256 `d7a937e039c1e1bc`, retrieved 2026-11-06, 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/rl1218fk-070r33l-datasheet.pdf)