# SMD1812-035C-60V

**BNstar** · Resettable Fuses · 1812

SMD1812-035C-60V from BNstar, in a 1812. 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 | BNstar |
| Package | 1812 |
| 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 (25 ℃ still air) | IH |  |  | 0.35 | A | 25℃ still air | 1 |
| Trip current (25 ℃ still air) | IT | 0.7 |  |  | A | 25℃ still air | 1 |
| Maximum voltage | Vmax |  |  | 60 | V | Continuous voltage at rated current | 1 |
| Maximum fault current | Imax |  |  | 40 | A | At rated voltage | 1 |
| Typical power dissipation | Pdtyp |  | 0.8 |  | W | Typical, tripped state in air | 1 |
| Maximum time to trip | Ttrip |  |  | 0.1 | s | At 8.0 A, 25℃ | 1 |
| Minimum resistance (initial, un-soldered) | Rmin | 0.2 |  |  | Ω | Initial un-soldered state | 1 |
| Maximum resistance (one hour after reflow) | R1max |  |  | 1.8 | Ω | 25℃, one hour after reflow soldering of 260℃ for 20 sec | 1 |
| Hold current at ambient -40 ℃ (thermal derating) | IH |  |  | 0.44 | A | Ambient -40℃ | 2 |
| Hold current at ambient -20 ℃ (thermal derating) | IH |  |  | 0.45 | A | Ambient -20℃ | 2 |
| Hold current at ambient 0 ℃ (thermal derating) | IH |  |  | 0.4 | A | Ambient 0℃ | 2 |
| Hold current at ambient 25 ℃ (thermal derating) | IH |  |  | 0.35 | A | Ambient 25℃ | 2 |
| Hold current at ambient 40 ℃ (thermal derating) | IH |  |  | 0.33 | A | Ambient 40℃ | 2 |
| Hold current at ambient 50 ℃ (thermal derating) | IH |  |  | 0.28 | A | Ambient 50℃ | 2 |
| Hold current at ambient 60 ℃ (thermal derating) | IH |  |  | 0.24 | A | Ambient 60℃ | 2 |
| Hold current at ambient 70 ℃ (thermal derating) | IH |  |  | 0.21 | A | Ambient 70℃ | 2 |
| Hold current at ambient 85 ℃ (thermal derating) | IH |  |  | 0.18 | A | Ambient 85℃ | 2 |
| Recommended storage temperature |  |  |  | 40 | ℃ | Recommended storage conditions, 70% R.H. max | 2 |

## CAD (KiCad official)

- Symbol: `SMD1812-035C-60V`
- Footprint: `Fuse:Fuse_1812_4532Metric`
- 3D model: 1812, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.9 mm nominal _1806_ height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files: `smd1812-035c-60v-etched.step` / `smd1812-035c-60v-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smd1812-035c-60v.step` / `smd1812-035c-60v.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [BNstar datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8756599653029040128) (3 pp, sha256 `df15c14514b8eac8`, retrieved 2026-10-26, 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/smd1812-035c-60v-datasheet.pdf)