# JFC1206-1450FS

**Shenzhen JDT Fuse** · Disposable Fuses · 1206

JFC1206-1450FS from Shenzhen JDT Fuse, 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 | Fuse terminal 1 (end cap) of the two-terminal 1206 SMD fuse, non-polarized and interchangeable with terminal 2; land pad 1.52 mm x 2.03 mm (0.06 x 0.08 in). |
| 2 | 2 | passive | Fuse terminal 2 (end cap) of the two-terminal 1206 SMD fuse, non-polarized and interchangeable with terminal 1; land pad 1.52 mm x 2.03 mm (0.06 x 0.08 in). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Shenzhen JDT Fuse |
| 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 |
|---|---|---|---|---|---|---|---|
| Rated current |  |  | 4.5 |  | A |  | 3 |
| Typical cold resistance |  |  | 30 |  | mOhms | Measured at <10% of rated current, ambient 25°C | 3 |
| Typical voltage drop |  |  | 164 |  | mV |  | 3 |
| Typical pre-arcing I2t | I2t |  | 2.62 |  | A2 Sec | Measured at 10In current | 3 |
| Time to open at 1.0In (250mA~5A range) |  | 4 |  |  | hour | Current 1.0In | 2 |
| Time to open at 2.5In (250mA~5A range) |  |  |  | 5 | sec | Current 2.5In | 2 |
| Operating temperature |  | -55 |  | 150 | °C | Normal ambient temperature 23+/-3°C, with proper correction factor applied | 4 |

## CAD (KiCad official)

- Symbol: `JFC1206-1450FS`
- Footprint: `Fuse:Fuse_1206_3216Metric`
- 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files: `jfc1206-1450fs-etched.step` / `jfc1206-1450fs-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `jfc1206-1450fs.step` / `jfc1206-1450fs.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Shenzhen JDT Fuse datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588899538043588608) (5 pp, sha256 `2d78c30f78df5149`, 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/jfc1206-1450fs-datasheet.pdf)