# SMD1206B200TF

**Brightking** · Resettable Fuses · 1206

SMD1206B200TF from Brightking, 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 | Terminal 1 of the non-polarized PTC resettable fuse (solder-plated copper, matte tin); Ihold 2.00A, Itrip 3.50A, Vmax 6Vdc, Imax 100A, recommended pad 1.00 x 1.80mm. |
| 2 | 2 | passive | Terminal 2 of the non-polarized PTC resettable fuse (solder-plated copper, matte tin); Ihold 2.00A, Itrip 3.50A, Vmax 6Vdc, Imax 100A, pads spaced 1.80mm apart. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Brightking |
| 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 (Ihold), maximum current device passes without tripping | Ihold |  |  | 2 | A |  | 1 |
| Trip current (Itrip), minimum current at which device trips | Itrip | 3.5 |  |  | A |  | 1 |
| Maximum time to trip | Time to trip |  |  | 1.5 | Sec. | at 8.00 A fault current | 1 |
| Minimum resistance in initial (un-soldered) state | Rmin | 0.018 |  |  | Ω |  | 1 |
| Maximum resistance at 23℃ after one hour post-trip or reflow | R1max |  |  | 0.08 | Ω |  | 1 |
| Maximum voltage device can withstand without damage | Vmax |  |  | 6 | Vdc |  | 1 |
| Maximum fault current device can withstand without damage | Imax |  |  | 100 | A |  | 1 |
| Typical power dissipated in tripped state | Pd |  | 0.8 |  | W |  | 1 |
| Passive aging resistance change |  | -50 |  | 50 | % | Passive aging at +85℃, 1000 hours; printed as typical resistance change | 6 |
| Humidity aging resistance change |  | -50 |  | 50 | % | Humidity aging at +85℃, 85%R.H., 1000 hours; printed as typical resistance change | 6 |
| Operating / storage temperature range |  | -40 |  | 85 | ℃ | Operating / storage temperature | 6 |
| Maximum device surface temperature in tripped state |  |  |  | 125 | ℃ | Tripped state | 6 |
| Peak temperature (TP) for Pb-free reflow | TP |  |  | 260 | ℃ | Pb-free assembly reflow profile | 5 |
| Recommended hold current at ambient |  |  | 2.6 |  | A | Ambient -40℃ | 3 |
| Recommended hold current at ambient |  |  | 2.44 |  | A | Ambient -20℃ | 3 |
| Recommended hold current at ambient |  |  | 2.35 |  | A | Ambient 0℃ | 3 |
| Recommended hold current at ambient |  |  | 2 |  | A | Ambient 23℃ | 3 |
| Recommended hold current at ambient |  |  | 1.78 |  | A | Ambient 40℃ | 3 |
| Recommended hold current at ambient |  |  | 1.67 |  | A | Ambient 50℃ | 3 |
| Recommended hold current at ambient |  |  | 1.5 |  | A | Ambient 60℃ | 3 |
| Recommended hold current at ambient |  |  | 1.45 |  | A | Ambient 70℃ | 3 |
| Recommended hold current at ambient |  |  | 1.1 |  | A | Ambient 85℃ | 3 |

## 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)) | 7 |

## CAD (KiCad official)

- Symbol: `SMD1206B200TF`
- Footprint: `Fuse:Fuse_1206_3216Metric`
- 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files: `smd1206b200tf-etched.step` / `smd1206b200tf-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smd1206b200tf.step` / `smd1206b200tf.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/8588902975493820416) (8 pp, sha256 `1af4fb1e2a72d5a2`, 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/smd1206b200tf-datasheet.pdf)