# JK-NSMD200L-12V

**Jinrui Electronic Materials Co** · Resettable Fuses · 1206

JK-NSMD200L-12V from Jinrui Electronic Materials Co, 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 | First terminal of the non-polarized PPTC (tin-plated nickel-copper); rated VMAX 12.0 V, IMAX 50.0 A, IH 2.0 A, IT 4.0 A at 25°C. |
| 2 | 2 | passive | Second terminal of the non-polarized PPTC, interchangeable with the first; solder pad layout F 1.0 mm, G 1.8 mm, H 1.8 mm. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Jinrui Electronic Materials Co |
| 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 voltage (rated voltage) | VMAX |  |  | 12 | V |  | 3 |
| Maximum fault current (withstand at rated voltage) | IMAX |  |  | 50 | A | at rated voltage | 3 |
| Minimum resistance prior to tripping | RiMIN | 0.008 |  |  | Ω | 25℃, prior to tripping | 3 |
| Maximum device resistance | R1MAX |  |  | 0.04 | Ω | measured one hour post reflow | 3 |
| Maximum time-to-trip |  |  |  | 5 | s | at 8.0 A | 3 |
| Passive aging resistance change |  | -10 |  | 10 | % | 85℃, 1000 hours | 5 |
| Humidity aging resistance change |  | -5 |  | 5 | % | 85℃/85%RH, 100 hours | 5 |
| Thermal shock resistance change |  |  | -30 |  | % | +85℃/-40℃, 20 times | 5 |
| Operating temperature range |  | -40 |  | 85 | ℃ |  | 1 |
| Maximum storage ambient temperature |  |  |  | 40 | ℃ | storage | 8 |
| Maximum storage relative humidity |  |  |  | 70 | % | storage | 8 |
| Hold current | IH |  | 2 |  | A |  | 3 |
| Trip current | IT |  | 4 |  | A |  | 3 |
| Typical power dissipation | PD |  | 0.8 |  | W | 25℃ still air | 3 |

## 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 | copper | tin | Terminal Materials Tin-Plated Nickle-copper | 4 |

## CAD (KiCad official)

- Symbol: `JK-NSMD200L-12V`
- Footprint: `Fuse:Fuse_1206_3216Metric`
- 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files: `jk-nsmd200l-12v-etched.step` / `jk-nsmd200l-12v-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `jk-nsmd200l-12v.step` / `jk-nsmd200l-12v.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Jinrui Electronic Materials Co datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588893602335870976) (8 pp, sha256 `dbb79fc0992bc6cb`, 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/jk-nsmd200l-12v-datasheet.pdf)