# V56MLA1206NH

**Littelfuse** · Varistors · 1206

V56MLA1206NH from Littelfuse, 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 | One end termination of the bi-directional varistor (non-polarized, interchangeable with the other terminal); rated VM(DC) 56 V, VM(AC) 40 V, 180 A 8/20µs surge, 1.0 J 10/1000µs energy. |
| 2 | 2 | passive | Other end termination of the bi-directional varistor (non-polarized, interchangeable with the other terminal); clamping voltage max 120 V at 1 A, nominal varistor voltage 61 V to 77 V at 1 mA DC. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| 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 |
|---|---|---|---|---|---|---|---|
| Maximum Continuous Working Voltage (DC) | VM(DC) |  |  | 56 | V | Maximum Ratings (125ºC) | 2 |
| Maximum Continuous Working Voltage (AC RMS) | VM(AC) |  |  | 40 | V | Maximum Ratings (125ºC) | 2 |
| Maximum Non-repetitive Surge Current | ITM |  |  | 180 | A | 8/20µs waveform | 2 |
| Maximum Non-repetitive Surge Energy | WTM |  |  | 1 | J | 10/1000µs waveform | 2 |
| Maximum Clamping Voltage | VC |  |  | 120 | V | at 1A (8/20µs) | 2 |
| Nominal Voltage (DC) | VN(DC) | 61 |  | 77 | V | at 1mA DC test current | 2 |
| Maximum Leakage Current |  |  | 25 | 100 | µA | At VM(DC); typical at 25ºC printed as <25µA | 3 |
| Average Power Dissipation of Transients (1206 size) |  |  |  | 0.1 | W | Average power dissipation of transients, 1206 size (note 3) | 3 |
| Operating Ambient Temperature Range | TA | -55 |  | 125 | ºC |  | 1 |
| Storage Temperature Range | TSTG | -55 |  | 150 | ºC |  | 1 |
| Temperature Coefficient of Clamping Voltage | αV |  |  | 0.01 | %/ºC | at Specified Test Current (family-level figure, printed as <0.01) | 1 |
| Typical Capacitance | C |  | 180 |  | pF | f = 1MHz | 2 |

## 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 | 7 |

## CAD (KiCad official)

- Symbol: `V56MLA1206NH`
- Footprint: `Resistor_SMD:R_1206_3216Metric`
- 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files: `v56mla1206nh-etched.step` / `v56mla1206nh-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `v56mla1206nh.step` / `v56mla1206nh.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/8588903626262003712) (9 pp, sha256 `d38c7c2cca232e45`, retrieved 2026-10-18, 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/v56mla1206nh-datasheet.pdf)