# RL0603A240K

**RUILON Shenzhen Ruilongyuan Elec** · Varistors · 0603

RL0603A240K from RUILON Shenzhen Ruilongyuan Elec, in a 0603. 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 | Varistor terminal 1 of a bidirectional, symmetrical device (polarity-independent), rated 14 VAC / 18 VDC max allowable voltage, varistor voltage 21.6~27 V at 1 mA, 30 A max 8/20μs surge. |
| 2 | 2 | passive | Varistor terminal 2 of a bidirectional, symmetrical device (polarity-independent), rated 14 VAC / 18 VDC max allowable voltage, 59 V max clamping at 1 A (8/20μs). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | RUILON Shenzhen Ruilongyuan Elec |
| Package | 0603 |
| Category | Circuit Protection |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `RL0603A240K`
- Footprint: `Resistor_SMD:R_0603_1608Metric`
- 3D model: 0603 (KiCad packages3D, STEP)
- 3D model files: `rl0603a240k-etched.step` / `rl0603a240k-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rl0603a240k.step` / `rl0603a240k.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [RUILON Shenzhen Ruilongyuan Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590208214936682496) (4 pp, sha256 `57dffee942a9641e`, retrieved 2026-10-09, 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/rl0603a240k-datasheet.pdf)