# SF-1206S150-2

**BOURNS** · Disposable Fuses · 1206

SF-1206S150-2 from BOURNS, 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 an unpolarised fuse; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised fuse; either orientation. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | BOURNS |
| 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 |
|---|---|---|---|---|---|---|---|
| Resistance tolerance | R | -25 |  | 25 | % | Resistance measured at ≤10 % rated current, 25 °C ambient | 1 |
| Rated current |  |  | 1.5 |  | A | Model SF-1206S150-2 | 1 |
| Resistance | R |  | 0.079 |  | Ω | Typ., measured at ≤10 % rated current, 25 °C ambient | 1 |
| Rated voltage |  |  |  | 63 | VDC | 63 VDC column (1.50 A model) | 1 |
| Interrupting rating |  |  |  | 50 | A | @ 63 VDC | 1 |
| Typical melting I2t | I2t |  | 0.236 |  | A2s | Melting I2t calculated at 10 times rated current | 1 |
| Clearing time at 100 % of rating |  | 4 |  |  | hours | At 25 °C ambient, 100 % of current rating (series table) | 1 |
| Clearing time at 250 % of rating |  |  |  | 5 | seconds | At 25 °C ambient, 250 % of current rating (series table) | 1 |
| Operating temperature |  | -20 |  | 105 | °C |  | 1 |
| Storage temperature |  | 5 |  | 35 | °C | Storage conditions | 1 |
| Peak reflow temperature |  | 245 |  | 250 | °C | Peak, 5 seconds, +0/-5 °C | 3 |
| Soldering zone temperature |  | 230 |  |  | °C | Soldering zone, 30 ± 10 seconds | 3 |
| Fusing time |  |  |  | 5 | seconds | 200 % of rated current (reliability test 2) | 4 |
| Temperature rise |  |  |  | 75 | °C | 100 % of rated current, surface temperature (reliability test 7) | 4 |
| Residual resistance after fusing |  | 10 |  |  | k ohms | DC resistance measured after fusing | 4 |
| Resistance change after solder heat | ΔR | -20 |  | 20 | % | 260 °C ±5 °C, 10 seconds ±1 second | 4 |
| Resistance change after dry heat | ΔR | -20 |  | 20 | % | 105 °C ±5 °C, 1000 hours | 4 |
| Resistance change after thermal shock | ΔR |  |  | 10 | % | -20 °C / +25 °C / +125 °C / +25 °C, 10 cycles | 4 |

## CAD (KiCad official)

- Symbol: `SF-1206S150-2`
- Footprint: `Fuse:Fuse_1206_3216Metric`
- 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files: `sf-1206s150-2-etched.step` / `sf-1206s150-2-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sf-1206s150-2.step` / `sf-1206s150-2.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [BOURNS datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590007030309154816) (5 pp, sha256 `703b1f579a261b6b`, retrieved 2026-10-19, 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/sf-1206s150-2-datasheet.pdf)