# FSMD110-16-R

**Fuzetec Tech** · Resettable Fuses · 1812

FSMD110-16-R from Fuzetec Tech, in a 1812. 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 | Pure-tin termination pad of the non-polarized resettable PTC fuse (IH 1.10 A, IT 2.20 A, VMAX 16 VDC, IMAX 100 A), recommended pad 1.78 mm wide by 3.50 mm long. |
| 2 | 2 | passive | Pure-tin termination pad of the non-polarized resettable PTC fuse (IH 1.10 A, IT 2.20 A, VMAX 16 VDC, IMAX 100 A), recommended pad 1.78 mm wide by 3.50 mm long, with 3.45 mm pad-to-pad gap. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Fuzetec Tech |
| Package | 1812 |
| 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 |
|---|---|---|---|---|---|---|---|
| Trip current (minimum, always trips) | IT | 2.2 |  |  | A | 23℃ still air | 1 |
| Hold current (maximum, will not trip) | IH |  |  | 1.1 | A | 23℃ still air | 1 |
| Minimum device resistance prior to tripping | RMIN | 0.06 |  |  | Ohms | 23℃, prior to tripping | 1 |
| Maximum device resistance 1 h after tripping or reflow | R1MAX |  |  | 0.18 | Ohms | 23℃, measured 1 hour after tripping or reflow soldering at 260℃ for 20 seconds | 1 |
| Maximum time to trip |  |  |  | 0.5 | Sec | Max time to trip at 8.0 A current, 23℃ still air | 1 |
| Rated (maximum) voltage | VMAX |  |  | 16 | VDC | Maximum voltage device can withstand without damage at its rated current (IMAX) | 2 |
| Maximum fault current | IMAX |  |  | 100 | A | At rated voltage (VMAX) | 2 |
| Typical power dissipated in tripped state | Pd |  | 0.8 |  | W | Tripped state, 23℃ still air | 2 |
| Operating temperature range |  | -40 |  | 85 | ℃ |  | 1 |

## CAD (KiCad official)

- Symbol: `FSMD110-16-R`
- Footprint: `Fuse:Fuse_1812_4532Metric`
- 3D model: 1812, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.9 mm nominal _1806_ height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files: `fsmd110-16-r-etched.step` / `fsmd110-16-r-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `fsmd110-16-r.step` / `fsmd110-16-r.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Fuzetec Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588910107115589632) (5 pp, sha256 `6c1f91fc21044331`, 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/fsmd110-16-r-datasheet.pdf)