# CGA0603MLA-31900E

**BOURNS** · Varistors · 0603

CGA0603MLA-31900E from BOURNS, 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 | Terminal 1 of an unpolarised resistor; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised resistor; either orientation. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | BOURNS |
| Package | 0603 |
| 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 minimum voltage (VN min, at <10 µA) | VN | 35 |  |  | V | <10 µA | 1 |
| Varistor maximum voltage (VN max, at 1 mA DC) | VN |  |  | 43.9 | V | 1 mA DC | 1 |
| Peak pulse current (ITM, max) | ITM |  |  | 30 | A | 8/20 µs | 1 |
| Maximum energy (WTM, max) | WTM |  |  | 0.2 | J | 10/1000 µs | 1 |
| Capacitance | CP |  | 90 |  | pF | 1 kHz | 1 |
| Maximum DC working voltage | VDC |  |  | 31 | V | Current <10 µA | 1 |
| Operating temperature |  | -55 |  | 125 | °C |  | 1 |
| Storage temperature |  | -55 |  | 150 | °C |  | 1 |

## CAD (KiCad official)

- Symbol: `CGA0603MLA-31900E`
- Footprint: `Resistor_SMD:R_0603_1608Metric`
- 3D model: 0603 (KiCad packages3D, STEP)
- 3D model files: `cga0603mla-31900e-etched.step` / `cga0603mla-31900e-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cga0603mla-31900e.step` / `cga0603mla-31900e.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/8590154613069275136) (3 pp, sha256 `7c62d927bf8035b8`, 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/cga0603mla-31900e-datasheet.pdf)