# 12B0750B

**Shenzhen lanson Elec** · Disposable Fuses · 1206

12B0750B from Shenzhen lanson Elec, 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 fuse terminal (nickel/tin-plated end cap) of the 750mA 125V fast-acting element, non-polarized, interrupting rating 50 A at 125V AC/DC. |
| 2 | 2 | passive | Other fuse terminal (nickel/tin-plated end cap) of the 750mA 125V fast-acting element, non-polarized and interchangeable with the other terminal. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Shenzhen lanson Elec |
| 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 |
|---|---|---|---|---|---|---|---|
| Non-opening time at 100% of rated current |  | 4 |  |  | hours | 100% of rated current | 1 |
| Opening time at 250% of rated current |  |  |  | 5 | s | 250% of rated current | 1 |
| Interrupting rating |  |  |  | 50 | A | at 125V AC/DC | 1 |
| Operating temperature |  | -55 |  | 125 | ℃ |  | 1 |
| Rated current |  |  | 750 |  | mA | Part 12B0750B | 1 |
| Rated voltage |  |  |  | 125 | V | Part 12B0750B, AC/DC | 1 |
| Reflow soldering peak temperature |  |  |  | 260 | ℃ | Reflow soldering | 1 |
| Reflow soldering time |  |  |  | 10 | s | Reflow soldering at 260℃ | 1 |

## CAD (KiCad official)

- Symbol: `12B0750B`
- Footprint: `Fuse:Fuse_1206_3216Metric`
- 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files: `12b0750b-etched.step` / `12b0750b-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `12b0750b.step` / `12b0750b.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Shenzhen lanson Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586197566623264768) (1 pp, sha256 `56bb733df4b48654`, 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/12b0750b-datasheet.pdf)