# MVR1210-390G

**DOWO** · Varistors · 1210

MVR1210-390G from DOWO, in a 1210. 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 | First end termination (Ag/Ni/Sn) of the bidirectional varistor, rated 24.0 V AC RMS / 30.0 V DC continuous with a varistor voltage of 39 V (35.0-42.0 V) at 1 mA. |
| 2 | 2 | passive | Second end termination (Ag/Ni/Sn) of the bidirectional varistor, interchangeable with the first, with a maximum clamping voltage of 65 V at 5 A (8/20 µs) and a rated peak surge current of 250 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | DOWO |
| Package | 1210 |
| Category | Circuit Protection |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `MVR1210-390G`
- Footprint: `Resistor_SMD:R_1210_3225Metric`
- 3D model: 1210 (KiCad packages3D, STEP)
- 3D model files: `mvr1210-390g-etched.step` / `mvr1210-390g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mvr1210-390g.step` / `mvr1210-390g.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [DOWO datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590903484990771200) (5 pp, sha256 `dbe8b0d8516ca2e8`, 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/mvr1210-390g-datasheet.pdf)