# RL1812A680K

**RUILON Shenzhen Ruilongyuan Elec** · Varistors · 1812

RL1812A680K from RUILON Shenzhen Ruilongyuan Elec, in a 1812. 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 resistor; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised resistor; either orientation. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | RUILON Shenzhen Ruilongyuan Elec |
| Package | 1812 |
| Category | Circuit Protection |
| 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 |
|---|---|---|---|---|---|---|---|
| Varistor voltage (min) | V1mA | 67.2 |  | 84 | V |  | 2 |
| Standard tolerance (K suffix) |  | -10 |  | 10 | % | K: ±10% | 1 |
| Max. allowable voltage (AC) | VAC |  |  | 40 | V |  | 2 |
| Max. allowable voltage (DC) | VDC |  |  | 56 | V |  | 2 |
| Max. energy |  |  |  | 1.5 | J | 10/1000μs | 2 |
| Max. clamping voltage | VC |  |  | 184 | V | 8/20μs, IP(A) = 10 | 2 |
| Withstanding surge current | I(A) |  |  | 800 | A | 8/20μs | 2 |
| Varistor voltage change, bias humidity | VV/VV | -10 |  | 10 | % | 90%RH, 40ºC, working voltage, 1000 hrs | 2 |
| Varistor voltage change, thermal shock | VV/VV | -10 |  | 10 | % | -40ºC to 85ºC, 30 min cycle, 5 cycles | 2 |
| Varistor voltage change, full load | VV/VV | -10 |  | 10 | % | Working voltage, 85ºC, 1000 hrs | 2 |
| Operating temperature |  | -40 |  | 85 | ºC |  | 2 |
| Storage temperature |  | -40 |  | 125 | ºC | Storage | 2 |
| Response time |  |  |  | 1 | ns | Printed as <1ns | 2 |

## CAD (KiCad official)

- Symbol: `RL1812A680K`
- Footprint: `Resistor_SMD:R_1812_4532Metric`
- 3D model: 1812 (KiCad packages3D, STEP)
- 3D model files: `rl1812a680k-etched.step` / `rl1812a680k-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rl1812a680k.step` / `rl1812a680k.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/8590227039116046336) (4 pp, sha256 `d2c5ae74098e0d19`, retrieved 2026-10-18, 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/rl1812a680k-datasheet.pdf)