# MF-PSHT020KX-2

**BOURNS** · Resettable Fuses · 0805

MF-PSHT020KX-2 from BOURNS, 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 | Unpolarized ENIG-plated terminal of the resettable fuse (Vmax 16 V, Imax 40 A, Ihold 0.20 A, Itrip 1.00 A at 23 °C), interchangeable with the other terminal. |
| 2 | 2 | passive | Unpolarized ENIG-plated terminal of the resettable fuse (Vmax 16 V, Imax 40 A, Ihold 0.20 A, Itrip 1.00 A at 23 °C), interchangeable with the other terminal. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | BOURNS |
| 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 |
|---|---|---|---|---|---|---|---|
| Maximum voltage (Vmax) | Vmax |  |  | 16 | Volts |  | 1 |
| Maximum current (Imax) | Imax |  |  | 40 | Amps |  | 1 |
| Minimum resistance (RMin.) | RMin. | 0.5 |  |  | Ohms | at 23 °C | 1 |
| Maximum resistance after 24 h post reflow (R1Max.) | R1Max. |  |  | 5 | Ohms | at 23 °C; R1Max measured 24 hours post reflow | 1 |
| Max. time to trip |  |  |  | 0.1 | Seconds | at 8.00 Amps, at 23 °C | 1 |
| Operating temperature |  | -40 |  | 125 | °C |  | 1 |
| Recommended storage temperature |  |  |  | 40 | °C |  | 1 |
| Recommended storage humidity |  |  |  | 70 | % R.H. |  | 1 |
| Hold current (Ihold) | Ihold |  | 0.2 |  | Amps | at 23 °C | 1 |
| Trip current (Itrip) | Itrip |  | 1 |  | Amps | at 23 °C | 1 |
| Tripped power dissipation |  |  | 0.9 |  | Watts | at 23 °C | 1 |
| Hold current vs ambient temperature | Ihold |  | 0.29 |  | Amps | ambient operating temperature -40 °C | 2 |
| Hold current vs ambient temperature | Ihold |  | 0.26 |  | Amps | ambient operating temperature -20 °C | 2 |
| Hold current vs ambient temperature | Ihold |  | 0.23 |  | Amps | ambient operating temperature 0 °C | 2 |
| Hold current vs ambient temperature | Ihold |  | 0.2 |  | Amps | ambient operating temperature +23 °C | 2 |
| Hold current vs ambient temperature | Ihold |  | 0.18 |  | Amps | ambient operating temperature +40 °C | 2 |
| Hold current vs ambient temperature | Ihold |  | 0.16 |  | Amps | ambient operating temperature +50 °C | 2 |
| Hold current vs ambient temperature | Ihold |  | 0.15 |  | Amps | ambient operating temperature +60 °C | 2 |
| Hold current vs ambient temperature | Ihold |  | 0.13 |  | Amps | ambient operating temperature +70 °C | 2 |
| Hold current vs ambient temperature | Ihold |  | 0.11 |  | Amps | ambient operating temperature +85 °C | 2 |
| Hold current vs ambient temperature | Ihold |  | 0.05 |  | Amps | ambient operating temperature +125 °C | 2 |

## CAD (KiCad official)

- Symbol: `MF-PSHT020KX-2`
- Footprint: `Fuse:Fuse_0805_2012Metric`
- 3D model: 0805 (KiCad packages3D, STEP)
- 3D model files: `mf-psht020kx-2-etched.step` / `mf-psht020kx-2-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mf-psht020kx-2.step` / `mf-psht020kx-2.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [BOURNS datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590904572330123264) (7 pp, sha256 `6fea8feb75c5b7de`, retrieved 2026-10-17, 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/mf-psht020kx-2-datasheet.pdf)