# BSMD1210-110-6V

**BHFUSE** · Resettable Fuses · 1210

BSMD1210-110-6V from BHFUSE, 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 | Terminal 1 of an unpolarised fuse; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised fuse; either orientation. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | BHFUSE |
| 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 |
|---|---|---|---|---|---|---|---|
| Hold current (Ihold), maximum current without tripping | Ihold |  |  | 1.1 | A | 25℃ still air | 1 |
| Trip current (Itrip), minimum current that trips the device | Itrip | 2.2 |  |  | A | 25℃ still air | 1 |
| Maximum voltage (Vmax) | Vmax |  |  | 6 | Vdc | at rated current (Imax) | 1 |
| Maximum fault current (Imax) | Imax |  |  | 100 | A | at rated voltage (Vmax) | 1 |
| Minimum resistance in initial (un-soldered) state (Rmin) | Rmin | 0.05 |  |  | Ω | initial un-soldered state | 1 |
| Maximum resistance after tripping or reflow (R1max) | R1max |  |  | 0.21 | Ω | 25℃, measured one hour after tripping or reflow soldering at 260℃ for 20 sec | 1 |
| Passive aging resistance change |  | -5 |  | 5 | % | +85℃, 1000 hrs; printed as ±5% typical | 4 |
| Humidity aging resistance change |  | -5 |  | 5 | % | +85℃, 85% R.H., 168 hours; printed as ±5% typical | 4 |
| Thermal shock resistance change |  | -33 |  | 33 | % | +85℃ to -40℃, 20 times; printed as ±33% typical | 4 |
| Ambient operating temperature |  | -40 |  | 85 | °C | ambient operating conditions | 4 |
| Storage temperature |  | 0 |  | 30 | ℃ | storage condition, 30%-60% RH | 5 |
| Maximum surface temperature in tripped state |  |  |  | 125 | °C | device in tripped state | 4 |
| Power dissipated in tripped state (Pd typ.) | Pd |  | 0.6 |  | W | tripped state, 25℃ still air | 1 |
| Time to trip |  |  | 0.3 |  | s | at 8.00 A, 25℃ still air | 1 |
| Hold current derating, ambient -40℃ | Ihold |  | 1.69 |  | A | ambient -40℃ | 4 |
| Hold current derating, ambient -20℃ | Ihold |  | 1.48 |  | A | ambient -20℃ | 4 |
| Hold current derating, ambient 0℃ | Ihold |  | 1.29 |  | A | ambient 0℃ | 4 |
| Hold current derating, ambient 25℃ | Ihold |  | 1.1 |  | A | ambient 25℃ | 4 |
| Hold current derating, ambient 40℃ | Ihold |  | 0.88 |  | A | ambient 40℃ | 4 |
| Hold current derating, ambient 50℃ | Ihold |  | 0.76 |  | A | ambient 50℃ | 4 |
| Hold current derating, ambient 60℃ | Ihold |  | 0.65 |  | A | ambient 60℃ | 4 |
| Hold current derating, ambient 70℃ | Ihold |  | 0.57 |  | A | ambient 70℃ | 4 |
| Hold current derating, ambient 85℃ | Ihold |  | 0.43 |  | A | ambient 85℃ | 4 |

## CAD (KiCad official)

- Symbol: `BSMD1210-110-6V`
- Footprint: `Fuse:Fuse_1210_3225Metric`
- 3D model: 1210 (KiCad packages3D, STEP)
- 3D model files: `bsmd1210-110-6v-etched.step` / `bsmd1210-110-6v-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bsmd1210-110-6v.step` / `bsmd1210-110-6v.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [BHFUSE datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588917244339867648) (7 pp, sha256 `5c6e439fe5a34d2c`, 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/bsmd1210-110-6v-datasheet.pdf)