# SL0805125

**TECHFUSE** · Resettable Fuses · 0805

SL0805125 from TECHFUSE, in a 0805. 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 | Terminal 1 of an unpolarised fuse; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised fuse; either orientation. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TECHFUSE |
| Package | 0805 |
| 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 | IT | 2.5 |  |  | A | Minimum current at which device always trips, 25℃ still air, reflow 260℃ for 20 sec | 2 |
| Initial resistance, minimum | Rmin | 0.015 |  |  | Ω | Initial (un-soldered) state | 2 |
| Initial resistance, maximum | Rmax |  |  | 0.04 | Ω | Initial (un-soldered) state | 2 |
| Maximum resistance after reflow | R1max |  |  | 0.07 | Ω | 25℃, measured one hour after reflow soldering 260℃ for 20 sec; PWB with 0.030 in 1.5 oz copper traces | 2 |
| Hold current | IH |  |  | 1.25 | A | Maximum current at which device will not trip, 25℃ or 60℃ still air | 2 |
| Maximum continuous voltage | Vmax |  |  | 6 | V | Maximum continuous voltage withstood without damage at rated current | 2 |
| Maximum fault current | Imax |  |  | 50 | A | Withstood without damage at rated voltage | 2 |
| Maximum time to trip | Ttrip |  |  | 1 | S | At assigned trip current 8.0 A; reflow soldering 260℃ for 20 sec | 2 |
| Typical power dissipation | Pdtyp |  | 1 |  | W | Typical power dissipated by the device in the stated air environment | 2 |
| Resistance change, vibration |  | -5 |  | 5 | % | MIL-STD-883C, Method 2007.1, Condition A | 2 |
| Resistance after passive aging | R1max |  |  | 0.07 | Ω | Passive aging: 85℃, 1000 hours; criterion printed as ≤ R1max | 2 |
| Resistance after moisture resistance | R1max |  |  | 0.07 | Ω | 85% RH, 85℃, 1000 hrs; criterion printed as ≤ R1max | 2 |
| Resistance after thermal shock | R1max |  |  | 0.07 | Ω | MIL-STD-202 Method 107G, +85℃/-40℃, 20 times; criterion printed as ≤ R1max | 2 |
| Recommended storage temperature, maximum |  |  |  | 40 | ℃ | Recommended storage conditions | 2 |
| Recommended storage humidity, maximum |  |  |  | 70 | % R.H. | Recommended storage conditions | 2 |
| Hold current derating at ambient | IH |  |  | 1.9 | A | Maximum ambient operating temperature -40℃ | 3 |
| Hold current derating at ambient | IH |  |  | 1.6 | A | Maximum ambient operating temperature -20℃ | 3 |
| Hold current derating at ambient | IH |  |  | 1.4 | A | Maximum ambient operating temperature 0℃ | 3 |
| Hold current derating at ambient | IH |  |  | 1.25 | A | Maximum ambient operating temperature 25℃ | 3 |
| Hold current derating at ambient | IH |  |  | 1.1 | A | Maximum ambient operating temperature 40℃ | 3 |
| Hold current derating at ambient | IH |  |  | 0.9 | A | Maximum ambient operating temperature 50℃ | 3 |
| Hold current derating at ambient | IH |  |  | 0.8 | A | Maximum ambient operating temperature 60℃ | 3 |
| Hold current derating at ambient | IH |  |  | 0.7 | A | Maximum ambient operating temperature 70℃ | 3 |

## CAD (KiCad official)

- Symbol: `SL0805125`
- Footprint: `Fuse:Fuse_0805_2012Metric`
- 3D model: 0805 (KiCad packages3D, STEP)
- 3D model files: `sl0805125-etched.step` / `sl0805125-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sl0805125.step` / `sl0805125.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/8588884104091734016) (4 pp, sha256 `7cbf94f435d86576`, retrieved 2026-10-17, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `two-terminal convention` (convention), consensus `off` (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/sl0805125-datasheet.pdf)