# JFC0603-0750FS

**Shenzhen JDT Fuse** · Disposable Fuses · 0603

JFC0603-0750FS from Shenzhen JDT Fuse, 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 | Fuse terminal 1 (unpolarized end cap); 0.750 A rated, 32V DC rated voltage, 50A DC breaking capacity, interchangeable with terminal 2. |
| 2 | 2 | passive | Fuse terminal 2 (unpolarized end cap); 0.750 A rated, 32V DC rated voltage, 50A DC breaking capacity, interchangeable with terminal 1. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Shenzhen JDT Fuse |
| 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 |
|---|---|---|---|---|---|---|---|
| Operating temperature |  | -55 |  |  | °C | with proper correction factor applied | 3 |
| Operating temperature |  |  |  | 150 | °C | with proper correction factor applied | 3 |
| Opening (no-open) time |  | 4 |  |  | hour | at 1.0Ih (as printed) | 2 |
| Opening time |  |  |  | 5 | sec | at 2.5Ih (as printed) | 2 |
| Preheat temperature (Tsmin) | Tsmin | 150 |  |  | °C | IR reflow, lead-free profile | 4 |
| Preheat temperature (Tsmax) | Tsmax |  |  | 200 | °C | IR reflow, lead-free profile | 4 |
| Preheat and soak time (tS) | tS | 60 |  | 150 | Secs | Time from Tsmin to Tsmax, lead-free profile | 4 |
| Average ramp-up rate (Tsmax to Tp) |  |  |  | 3 | °C/Secs | IR reflow, lead-free profile | 4 |
| Time above liquidus (tL) | tL | 60 |  | 120 | Secs | IR reflow, lead-free profile | 4 |
| Peak package body temperature (TP) | TP |  |  | 260 | °C | IR reflow, lead-free profile | 4 |
| Average ramp-down rate (TP to Tsmax) |  |  |  | 6 | °C/Secs | IR reflow, lead-free profile | 4 |
| Time from 25°C to peak temperature |  |  |  | 8 | Minutes | IR reflow | 4 |
| Time in wave solder reservoir |  |  |  | 10 | Secs | Wave solder, reservoir at 260°C | 4 |
| Liquidus temperature (TL) | TL |  | 217 |  | °C | IR reflow, lead-free profile | 4 |
| Rated current |  |  | 0.75 |  | A | JFC0603-0750FS | 3 |
| Typical cold resistance |  |  | 470 |  | mΩ | measured at <10% of rated current, ambient 25°C | 3 |
| Typical voltage drop |  |  | 427 |  | mV |  | 3 |
| Typical pre-arcing I2t | I2t |  | 0.009 |  | A2Sec | measured at 10In current | 3 |
| Breaking capacity (DC interrupting rating) |  |  | 50 |  | A | measured at rated voltage, time constant of less than 50 microseconds, battery source | 3 |

## CAD (KiCad official)

- Symbol: `JFC0603-0750FS`
- Footprint: `Fuse:Fuse_0603_1608Metric`
- 3D model: 0603 (KiCad packages3D, STEP)
- 3D model files: `jfc0603-0750fs-etched.step` / `jfc0603-0750fs-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `jfc0603-0750fs.step` / `jfc0603-0750fs.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/8588899534638759936) (4 pp, sha256 `51c33a5e4e1ad242`, retrieved 2026-10-14, 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/jfc0603-0750fs-datasheet.pdf)