# SMD1206-050-6

**hongjiacheng** · Resettable Fuses · 1206

SMD1206-050-6 from hongjiacheng, 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 | Non-polarized PTC resettable fuse terminal (Ihold 0.50 A, Itrip 1.0 A, Vmax 6.0 V, Imax 40 A); pad 1.2±0.1 x 1.9±0.1 mm, interchangeable with the other terminal. |
| 2 | 2 | passive | Non-polarized PTC resettable fuse terminal (Ihold 0.50 A, Itrip 1.0 A, Vmax 6.0 V, Imax 40 A); pad 1.2±0.1 x 1.9±0.1 mm, interchangeable with the other terminal. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | hongjiacheng |
| 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) | Ihold |  | 0.5 | 0.5 | A | 25°C still air; maximum current device passes without tripping | 2 |
| Trip current (Itrip) | Itrip | 1 |  |  | A | 25°C still air; minimum current at which device trips | 2 |
| Maximum voltage (Vmax) | Vmax |  |  | 6 | V | maximum voltage device withstands without damage at rated current (Imax) | 2 |
| Maximum fault current (Imax) | Imax |  |  | 40 | A | maximum fault current withstood without damage at rated voltage (Vmax) | 2 |
| Minimum initial resistance (Ri min) | Ri | 0.15 |  |  | Ω | minimum resistance in initial (un-soldered) state | 2 |
| Maximum resistance after trip (R1 max) | R1 |  |  | 0.7 | Ω | 25°C, measured one hour after tripping or reflow soldering at 260°C for 20 sec | 2 |
| Maximum time-to-trip |  |  |  | 0.1 | s | at 8.0 A test current (Max. Time-to-trip column) | 2 |
| Typical power dissipated in tripped state (Pd typ) | Pd |  | 0.6 |  | W | tripped state, 25°C still air | 2 |
| Operating / storage temperature |  | -40 |  | 85 | °C | operating / storage temperature range | 4 |
| Maximum device surface temperature in tripped state |  |  |  | 125 | °C | tripped state | 4 |
| Reflow peak temperature (TP) | TP |  |  | 260 | °C | reflow peak temperature printed as +260(+0/-5)°C; do not exceed +260°C | 1 |

## CAD (KiCad official)

- Symbol: `SMD1206-050-6`
- Footprint: `Fuse:Fuse_1206_3216Metric`
- 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files: `smd1206-050-6-etched.step` / `smd1206-050-6-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smd1206-050-6.step` / `smd1206-050-6.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [hongjiacheng datasheet](docs/smd1206-050-6-datasheet.pdf) (6 pp, sha256 `ac89288fcdc8403c`, retrieved 2026-10-19, 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/smd1206-050-6-datasheet.pdf)