# RL1206A101K

**RUILON Shenzhen Ruilongyuan Elec** · Varistors · 1206

RL1206A101K from RUILON Shenzhen Ruilongyuan Elec, in a 1206. 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 bidirectional, symmetrical MLV; RL1206A101K has a varistor voltage of 102~127.5 V at 1 mA, 60 VAC / 85 VDC maximum allowable voltage, and 280 V maximum clamping at 5 A (8/20μs). |
| 2 | 2 | passive | Terminal 2 of the bidirectional, symmetrical MLV; interchangeable with terminal 1, with 0.5 J maximum energy (10/1000μs) and 100 A withstanding surge current (8/20μs). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | RUILON Shenzhen Ruilongyuan Elec |
| Package | 1206 |
| 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 | V1mA | 102 |  | 127.5 | V |  | 2 |
| Max. allowable AC voltage | VAC |  |  | 60 | V |  | 2 |
| Max. allowable DC voltage | VDC |  |  | 85 | V |  | 2 |
| Max. energy |  |  |  | 0.5 | J | 10/1000μs | 2 |
| Max. clamping voltage | VC |  |  | 280 | V | 8/20μs, IP = 5 A | 2 |
| Withstanding surge current | I |  |  | 100 | A | 8/20μs | 2 |
| Standard tolerance |  | -10 |  | 10 | % |  | 1 |
| 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, 30min.cycle, 5 cycles | 2 |
| Varistor voltage change, full load | VV / VV | -10 |  | 10 | % | Working Voltage, 85ºC, 1000 hrs | 2 |
| Operating temperature range |  | -55 |  | 125 | ℃ |  | 1 |
| Storage temperature range |  | 5 |  | 40 | ℃ | Taping package storage condition | 3 |

## CAD (KiCad official)

- Symbol: `RL1206A101K`
- Footprint: `Resistor_SMD:R_1206_3216Metric`
- 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files: `rl1206a101k-etched.step` / `rl1206a101k-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rl1206a101k.step` / `rl1206a101k.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/8590918743055028224) (4 pp, sha256 `c99f4426220ea786`, retrieved 2026-10-17, 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/rl1206a101k-datasheet.pdf)