# V5.5MLA0603NHAUTO

**Littelfuse** · Varistors · 0603

V5.5MLA0603NHAUTO from Littelfuse, 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 | Littelfuse |
| 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 |
|---|---|---|---|---|---|---|---|
| Nominal voltage at 1mA DC test current, minimum | VN(DC) | 7.1 |  |  | V | at 1 mA DC test current | 2 |
| Nominal voltage at 1mA DC test current, maximum | VN(DC) |  |  | 9.3 | V | at 1 mA DC test current | 2 |
| Maximum clamping voltage | VC |  |  | 17.5 | V | at 1 A (8/20µs) | 2 |
| Maximum non-repetitive surge current | ITM |  |  | 30 | A | 8/20µs | 2 |
| Maximum non-repetitive surge energy | WTM |  |  | 0.1 | J | 10/1000µs | 2 |
| Maximum leakage current |  |  |  | 100 | µA | at VM(DC) | 2 |
| Maximum continuous working voltage (DC) | VM(DC) |  |  | 5.5 | V | maximum rated at 125 ºC | 2 |
| Maximum continuous working voltage (AC RMS) | VM(AC) |  |  | 4 | V | maximum rated at 125 ºC | 2 |
| Capacitance | C |  | 830 |  | pF | f = 1 MHz | 2 |
| Average power dissipation of transients, 0603 size |  |  |  | 0.05 | W | average power dissipation of transients, 0603 size (note 3) | 2 |
| Temperature coefficient (αV) of clamping voltage | αV |  |  | 0.01 | %/ºC | at specified test current | 1 |
| Operating ambient temperature range | TA | -40 |  | 125 | ºC |  | 1 |
| Storage temperature range | TSTG | -40 |  | 150 | ºC |  | 1 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts |  | nickel | Lead-free (Pb-free) Soldering Recommendations Littelfuse offers the Nickel Barrier Termination option (see | 6 |

## CAD (KiCad official)

- Symbol: `V5.5MLA0603NHAUTO`
- Footprint: `Resistor_SMD:R_0603_1608Metric`
- 3D model: 0603 (KiCad packages3D, STEP)
- 3D model files: `v5-5mla0603nhauto-etched.step` / `v5-5mla0603nhauto-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `v5-5mla0603nhauto.step` / `v5-5mla0603nhauto.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Littelfuse datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590163278962712576) (8 pp, sha256 `59e4f65aa5f509e4`, retrieved 2026-10-19, 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/v5-5mla0603nhauto-datasheet.pdf)