# CG0402MLU-3.3G

**BOURNS** · Varistors · 0402

CG0402MLU-3.3G from BOURNS, in a 0402. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | A | passive | Terminal 1 of the bidirectional ESD protector. Connect between the signal line and ground (device is symmetric/bidirectional, so terminal assignment is interchangeable). Clamps transients above ~250 V trigger to protect downstream circuitry. |
| 2 | B | passive | Terminal 2 of the bidirectional ESD protector. Connect between the signal line and ground (device is symmetric/bidirectional, so terminal assignment is interchangeable). Clamps transients above ~250 V trigger to protect downstream circuitry. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | BOURNS |
| Package | 0402 |
| Category | Circuit Protection |
| Pins | 2 |

## Ordering variants

Same part, different packaging or reel option.

- `CG0402MLU-3.3GG`
- `CG0402MLU-3.3GE`

## CAD (KiCad official)

- Symbol: `CG0402MLU-3.3G`
- Footprint: `Resistor_SMD:R_0402_1005Metric`
- 3D model: 0402 (KiCad packages3D, STEP)
- 3D model files: `cg0402mlu-3-3g-etched.step` / `cg0402mlu-3-3g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cg0402mlu-3-3g.step` / `cg0402mlu-3-3g.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [BOURNS datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590161142007308288) (4 pp, sha256 `f29173b512250d11`, retrieved 2026-08-17, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/cg0402mlu-3-3g-datasheet.pdf)