# BSMD1206-035-16V

**BHFUSE** · Resettable Fuses · 1206

BSMD1206-035-16V from BHFUSE, in a 1206. 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 | One of two interchangeable, non-polarized terminals of the resettable PTC fuse (Ihold 0.35 A, Itrip 0.75 A, Vmax 16 Vdc, Imax 40 A). |
| 2 | 2 | passive | Second interchangeable, non-polarized terminal of the resettable PTC fuse (Rmin 0.250 Ω, R1max 1.500 Ω); recommended pad is 1.00±0.1 mm wide by 1.80±0.1 mm. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | BHFUSE |
| Package | 1206 |
| 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 (maximum current without tripping, 25℃ still air) | Ihold |  |  | 0.35 | A | 25℃ still air | 2 |
| Trip current (minimum current at which device trips) | Itrip | 0.75 |  |  | A | 25℃ still air | 2 |
| Maximum voltage device can withstand without damage | Vmax |  |  | 16 | Vdc | at rated current (Imax) | 2 |
| Maximum fault current device can withstand without damage | Imax |  |  | 40 | A | at rated voltage (Vmax) | 2 |
| Minimum resistance in initial (un-soldered) state | Rmin | 0.25 |  |  | Ω | initial un-soldered state | 2 |
| Maximum resistance at 25℃ one hour after tripping or reflow soldering | R1max |  |  | 1.5 | Ω | 25℃, measured one hour after tripping or reflow soldering at 260℃ for 20 sec | 2 |
| Typical power dissipated in tripped state | Pd |  | 0.6 |  | W | tripped state, 25℃ still air | 2 |
| Time to trip |  |  | 0.1 |  | Sec |  | 2 |
| Ambient operating temperature hold current (Ihold) at -40℃ | Ihold |  | 0.5 |  | A | ambient operating temperature -40℃ (BSMD1206-035 family row) | 5 |
| Ambient operating temperature hold current (Ihold) at -20℃ | Ihold |  | 0.45 |  | A | ambient operating temperature -20℃ (BSMD1206-035 family row) | 5 |
| Ambient operating temperature hold current (Ihold) at 0℃ | Ihold |  | 0.4 |  | A | ambient operating temperature 0℃ (BSMD1206-035 family row) | 5 |
| Ambient operating temperature hold current (Ihold) at 25℃ | Ihold |  | 0.35 |  | A | ambient operating temperature 25℃ (BSMD1206-035 family row) | 5 |
| Ambient operating temperature hold current (Ihold) at 40℃ | Ihold |  | 0.3 |  | A | ambient operating temperature 40℃ (BSMD1206-035 family row) | 5 |
| Ambient operating temperature hold current (Ihold) at 50℃ | Ihold |  | 0.27 |  | A | ambient operating temperature 50℃ (BSMD1206-035 family row) | 5 |
| Ambient operating temperature hold current (Ihold) at 60℃ | Ihold |  | 0.24 |  | A | ambient operating temperature 60℃ (BSMD1206-035 family row) | 5 |
| Ambient operating temperature hold current (Ihold) at 70℃ | Ihold |  | 0.21 |  | A | ambient operating temperature 70℃ (BSMD1206-035 family row) | 5 |
| Ambient operating temperature hold current (Ihold) at 85℃ | Ihold |  | 0.15 |  | A | ambient operating temperature 85℃ (BSMD1206-035 family row) | 5 |
| Resistance change after passive aging |  | -5 |  | 5 | % | +85°C, 1000 hours; typical | 5 |
| Resistance change after humidity aging |  | -5 |  | 5 | % | +85°C, 85% R.H., 168 hours; typical | 5 |
| Resistance change after thermal shock |  | -33 |  | 33 | % | +85°C to -40°C, 20 times; typical | 5 |
| Ambient operating temperature range |  | -40 |  | 85 | °C | ambient operating conditions | 5 |
| Maximum surface temperature in tripped state |  |  |  | 125 | °C | device in the tripped state | 5 |

## CAD (KiCad official)

- Symbol: `BSMD1206-035-16V`
- Footprint: `Fuse:Fuse_1206_3216Metric`
- 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files: `bsmd1206-035-16v-etched.step` / `bsmd1206-035-16v-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bsmd1206-035-16v.step` / `bsmd1206-035-16v.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/8756290974425460736) (10 pp, sha256 `6d5827b9497205e2`, 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/bsmd1206-035-16v-datasheet.pdf)