# SMD1210B200TF

**Brightking** · Resettable Fuses · 1210

SMD1210B200TF from Brightking, 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 | Brightking |
| 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) | Ihold |  |  | 2 | A | 23℃ still air | 2 |
| Trip current (Itrip) | Itrip | 4 |  |  | A | 23℃ still air | 2 |
| Maximum voltage (Vmax) | Vmax |  |  | 6 | Vdc |  | 2 |
| Maximum fault current (Imax) | Imax |  |  | 100 | A |  | 2 |
| Typical power dissipated in tripped state (Pd typ.) | Pd |  | 0.8 |  | W | Tripped state, 23℃ still air | 2 |
| Maximum time to trip |  |  |  | 1 | Sec. | at 8.00 A current | 2 |
| Minimum resistance in initial (un-soldered) state (Rmin) | Rmin | 0.015 |  |  | Ω | Initial un-soldered state | 2 |
| Maximum resistance at 23℃ (R1max) | R1max |  |  | 0.075 | Ω | 23℃, measured one hour after tripping or reflow soldering at 260℃ for 20 sec | 2 |
| Operating / storage temperature |  | -40 |  | 85 | ℃ | Operating / storage | 7 |
| Maximum device surface temperature in tripped state |  |  |  | 125 | ℃ | Tripped state | 7 |
| Passive aging resistance change |  | -50 |  | 50 | % | +85℃, 1000 hours; typical resistance change | 7 |
| Humidity aging resistance change |  | -50 |  | 50 | % | +85℃, 85% R.H., 1000 hours; typical resistance change | 7 |
| Thermal shock resistance change |  |  | -50 |  | % | MIL-STD-202 Method 107G, -40℃ / +85℃, 20 times; typical resistance change | 7 |
| Recommended hold current at ambient -40℃ | Ihold |  | 2.6 |  | A | Ambient -40℃ | 5 |
| Recommended hold current at ambient -20℃ | Ihold |  | 2.44 |  | A | Ambient -20℃ | 5 |
| Recommended hold current at ambient 0℃ | Ihold |  | 2.35 |  | A | Ambient 0℃ | 5 |
| Recommended hold current at ambient 23℃ | Ihold |  | 2 |  | A | Ambient 23℃ | 5 |
| Recommended hold current at ambient 40℃ | Ihold |  | 1.78 |  | A | Ambient 40℃ | 5 |
| Recommended hold current at ambient 50℃ | Ihold |  | 1.67 |  | A | Ambient 50℃ | 5 |
| Recommended hold current at ambient 60℃ | Ihold |  | 1.5 |  | A | Ambient 60℃ | 5 |
| Recommended hold current at ambient 70℃ | Ihold |  | 1.45 |  | A | Ambient 70℃ | 5 |
| Recommended hold current at ambient 85℃ | Ihold |  | 1.1 |  | A | Ambient 85℃ | 5 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | Copper | tin | Terminal Material Solder-Plated Copper (Solder Material: Matte Tin (Sn)) | 8 |

## CAD (KiCad official)

- Symbol: `SMD1210B200TF`
- Footprint: `Fuse:Fuse_1210_3225Metric`
- 3D model: 1210 (KiCad packages3D, STEP)
- 3D model files: `smd1210b200tf-etched.step` / `smd1210b200tf-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smd1210b200tf.step` / `smd1210b200tf.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Brightking datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588903005593092096) (9 pp, sha256 `02d03e61b9be4912`, retrieved 2026-10-20, 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/smd1210b200tf-datasheet.pdf)