# QV1206P511KT101

**QAMcn** · Varistors · 1206

QV1206P511KT101 from QAMcn, 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 | Ag/Ni/Sn terminal electrode at one end of the 1206 chip varistor (non-polarized, 510V ±10% at 1mA, max working 320VAC/410VDC). |
| 2 | 2 | passive | Ag/Ni/Sn terminal electrode at the opposite end of the 1206 chip varistor (non-polarized, 510V ±10% at 1mA, max working 320VAC/410VDC). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | QAMcn |
| Package | 1206 |
| Category | TVS/Fuse/Board Level 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 voltage (nominal) | V1mA |  | 510 |  | V | @1mA DC | 3 |
| Varistor voltage tolerance | V1mA | -10 |  | 10 | % | Tolerance code K (±10%) per part-number table | 3 |
| Max. working voltage (AC) | VAC |  |  | 320 | V |  | 3 |
| Max. working voltage (DC) | VDC |  |  | 410 | V |  | 3 |
| Max. clamping voltage | Vc |  |  | 850 | V | 8/20 µs, Ic = 1 A | 3 |
| Peak current | Ip |  |  | 100 | A | 8/20 µs | 3 |
| Operation ambient temperature | Top | -40 |  | 125 | °C |  | 3 |
| Varistor voltage change after bending resistance test | ΔV1mA/V1mA | -5 |  | 5 | % | Warp 2 mm, speed <0.5 mm/s, duration 10 s | 3 |
| Varistor voltage change after resistance to soldering heat | ΔV1mA/V1mA | -10 |  | 10 | % | Solder 260±5 °C, dip 5±1 s | 4 |
| Varistor voltage change after thermal shock | ΔV1mA/V1mA | -10 |  | 10 | % | 100 high/low temperature cycles | 4 |
| Varistor voltage change after maximum surge current | ΔV1mA/V1mA | -10 |  | 10 | % | 8/20 µs, max surge current (Ip), one pulse each polarity | 4 |

## 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 |  | tin | Terminal Electrode (Ag/Ni/Sn three layers) | 2 |

## CAD (KiCad official)

- Symbol: `QV1206P511KT101`
- Footprint: `Fuse:Fuse_1206_3216Metric`
- 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files: `qv1206p511kt101-etched.step` / `qv1206p511kt101-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `qv1206p511kt101.step` / `qv1206p511kt101.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [QAMcn datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590182810008399872) (6 pp, sha256 `dc9e099e4862d337`, retrieved 2026-10-18, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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/qv1206p511kt101-datasheet.pdf)