# SL1210230

**TECHFUSE** · Resettable Fuses · 1210

SL1210230 from TECHFUSE, 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 | TECHFUSE |
| 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 |
|---|---|---|---|---|---|---|---|
| Minimum resistance (initial, un-soldered) | Rmin | 0.005 |  |  | Ω | Initial (un-soldered) state | 2 |
| Maximum resistance (initial, un-soldered) | Rmax |  |  | 0.01 | Ω | Initial (un-soldered) state | 2 |
| Maximum resistance at 25℃ after reflow | R1max |  |  | 0.028 | Ω | 25℃, measured one hour after reflow soldering 260℃ for 20 s; PWB 0.030" 1.5oz copper traces | 2 |
| Trip current (minimum) | IT | 4.6 |  |  | A | 25℃ still air, reflow soldering 260℃ for 20 s | 2 |
| Hold current (maximum, no trip) | IH |  |  | 2.3 | A | 25℃ still air, reflow soldering 260℃ for 20 s | 2 |
| Maximum continuous voltage | Vmax |  |  | 6 | V | At rated current | 2 |
| Maximum fault current | Imax |  |  | 50 | A | At rated voltage | 2 |
| Maximum time to trip | Ttrip |  |  | 5 | S | At assigned trip current 8.0 A; reflow soldering 260℃ for 20 s | 2 |
| Typical power dissipation (in still air) | Pdtyp |  | 1.2 |  | W | Typical power dissipated by the device in still air | 2 |
| Recommended storage temperature (max) |  |  |  | 40 | ℃ | Recommended storage conditions | 2 |
| Recommended storage relative humidity (max) |  |  |  | 70 | % R.H. | Recommended storage conditions | 2 |
| Hold current at ambient temperature | IH |  | 3.5 |  | A | Ambient -40 ℃ | 3 |
| Hold current at ambient temperature | IH |  | 3.1 |  | A | Ambient -20 ℃ | 3 |
| Hold current at ambient temperature | IH |  | 2.7 |  | A | Ambient 0 ℃ | 3 |
| Hold current at ambient temperature | IH |  | 2.3 |  | A | Ambient 25 ℃ | 3 |
| Hold current at ambient temperature | IH |  | 2 |  | A | Ambient 40 ℃ | 3 |
| Hold current at ambient temperature | IH |  | 1.8 |  | A | Ambient 50 ℃ | 3 |
| Hold current at ambient temperature | IH |  | 1.6 |  | A | Ambient 60 ℃ | 3 |
| Hold current at ambient temperature | IH |  | 1.4 |  | A | Ambient 70 ℃ | 3 |

## CAD (KiCad official)

- Symbol: `SL1210230`
- Footprint: `Fuse:Fuse_1210_3225Metric`
- 3D model: 1210 (KiCad packages3D, STEP)
- 3D model files: `sl1210230-etched.step` / `sl1210230-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sl1210230.step` / `sl1210230.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TECHFUSE datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588917739649421312) (5 pp, sha256 `8ae482acc55ca041`, retrieved 2026-10-18, 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/sl1210230-datasheet.pdf)