# SMD1210-110-24V

**TECHFUSE** · Resettable Fuses · 1210

SMD1210-110-24V from TECHFUSE, in a 1210. 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 | Non-polarized PPTC terminal (tin-plated nickel-copper pad); device is rated 24 Vdc max, 100 A max fault current, 1.10 A hold and 2.20 A trip current at 25°C. |
| 2 | 2 | passive | Non-polarized PPTC terminal (tin-plated nickel-copper pad); interchangeable with the other terminal, in series with the protected load, with resistance 0.050 Ω min to 0.210 Ω max before tripping. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TECHFUSE |
| Package | 1210 |
| 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 operating voltage (Vmax) | Vmax |  |  | 24 | Vdc | Maximum operating voltage the device can withstand without damage at rated current (Imax) | 2 |
| Maximum fault current (Imax) | Imax |  |  | 100 | A | Maximum fault current the device can withstand without damage at rated voltage (Vmax) | 2 |
| Hold current (Ihold) | Ihold |  |  | 1.1 | A | Maximum current device will not trip in 25°C still air | 2 |
| Trip current (Itrip) | Itrip | 2.2 |  |  | A | Minimum current at which the device will always trip in 25°C still air | 2 |
| Power dissipation in tripped state (Pd) | Pd |  | 0.6 |  | W | Tripped state, 25°C still air, at rated voltage | 2 |
| Ambient operating temperature |  | -40 |  | 85 | °C | Ambient operating conditions | 2 |
| Maximum surface temperature in tripped state |  |  |  | 125 | °C | Maximum surface temperature of the device in the tripped state | 2 |
| Storage temperature |  |  |  | 40 | °C | Storage conditions: 40°C max, 70% R.H. | 4 |

## CAD (KiCad official)

- Symbol: `SMD1210-110-24V`
- Footprint: `Fuse:Fuse_1210_3225Metric`
- 3D model: 1210 (KiCad packages3D, STEP)
- 3D model files: `smd1210-110-24v-etched.step` / `smd1210-110-24v-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smd1210-110-24v.step` / `smd1210-110-24v.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TECHFUSE datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603346579969486848) (4 pp, sha256 `ec6687bd47c35cdb`, 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/smd1210-110-24v-datasheet.pdf)