# TLC-NSML450

**TLC Electronic** · Resettable Fuses · 1206

TLC-NSML450 from TLC Electronic, 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 | Resettable PTC fuse terminal 1 (non-polarized, interchangeable with terminal 2); device is rated Vmax 10Vdc, Imax 50A, I-hold 4.50A and I-trip 9.00A at 25°C. |
| 2 | 2 | passive | Resettable PTC fuse terminal 2 (non-polarized, interchangeable with terminal 1); device is rated Vmax 10Vdc, Imax 50A, I-hold 4.50A and I-trip 9.00A at 25°C. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | TLC Electronic |
| 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 (max without trip) | I-hold |  |  | 4.5 | A | 25℃ still air | 1 |
| Trip current (min to trip) | I-trip | 9 |  |  | A | 25℃ still air | 1 |
| Hold current (max without trip) | I-hold |  |  | 3 | A | 70℃ still air | 1 |
| Trip current (min to trip) | I-trip | 6 |  |  | A | 70℃ still air | 1 |
| Time to trip |  |  |  | 5 | s | 22.5A @ 25℃ | 1 |
| Minimum resistance prior to trip | R min | 0.002 |  |  | Ω | 25℃ | 1 |
| Maximum resistance one hour post reflow | R1max |  |  | 0.014 | Ω | 25℃ | 1 |
| Rated working power | Pd |  | 1.5 |  | W |  | 1 |
| Maximum voltage withstand at rated current | Vmax |  |  | 10 | Vdc | at rated current | 1 |
| Maximum fault current withstand at rated voltage | Imax |  |  | 50 | A | at rated voltage | 1 |
| Hold current vs ambient (max without trip) |  |  |  | 6.2 | A | ambient -40℃ | 1 |
| Hold current vs ambient (max without trip) |  |  |  | 5.65 | A | ambient -20℃ | 1 |
| Hold current vs ambient (max without trip) |  |  |  | 5.25 | A | ambient 0℃ | 1 |
| Hold current vs ambient (max without trip) |  |  |  | 4.5 | A | ambient 25℃ | 1 |
| Hold current vs ambient (max without trip) |  |  |  | 4.15 | A | ambient 40℃ | 1 |
| Hold current vs ambient (max without trip) |  |  |  | 3.45 | A | ambient 50℃ | 1 |
| Hold current vs ambient (max without trip) |  |  |  | 3.15 | A | ambient 60℃ | 1 |
| Hold current vs ambient (max without trip) |  |  |  | 3 | A | ambient 70℃ | 1 |
| Hold current vs ambient (max without trip) |  |  |  | 2.4 | A | ambient 85℃ | 1 |
| Hold current vs ambient (max without trip) |  |  |  | 1.35 | A | ambient 105℃ | 1 |
| Trip current vs ambient (min to trip) |  | 12.4 |  |  | A | ambient -40℃ | 1 |
| Trip current vs ambient (min to trip) |  | 11.3 |  |  | A | ambient -20℃ | 1 |
| Trip current vs ambient (min to trip) |  | 10.5 |  |  | A | ambient 0℃ | 1 |
| Trip current vs ambient (min to trip) |  | 9 |  |  | A | ambient 25℃ | 1 |
| Trip current vs ambient (min to trip) |  | 8.3 |  |  | A | ambient 40℃ | 1 |
| Trip current vs ambient (min to trip) |  | 6.9 |  |  | A | ambient 50℃ | 1 |
| Trip current vs ambient (min to trip) |  | 6.3 |  |  | A | ambient 60℃ | 1 |
| Trip current vs ambient (min to trip) |  | 6 |  |  | A | ambient 70℃ | 1 |
| Trip current vs ambient (min to trip) |  | 4.8 |  |  | A | ambient 85℃ | 1 |
| Trip current vs ambient (min to trip) |  | 2.7 |  |  | A | ambient 105℃ | 1 |
| Peak solder reflow temperature |  |  |  | 260 | ℃ | recommended reflow profile peak | 1 |
| Average ramp-up rate |  |  |  | 3 | ℃/second | solder reflow, average | 1 |
| Ramp-down rate |  |  |  | 6 | ℃/second | solder reflow | 1 |

## CAD (KiCad official)

- Symbol: `TLC-NSML450`
- Footprint: `Fuse:Fuse_1206_3216Metric`
- 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files: `tlc-nsml450-etched.step` / `tlc-nsml450-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tlc-nsml450.step` / `tlc-nsml450.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [TLC Electronic datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588912611098705920) (2 pp, sha256 `3abb3780815ea6a5`, retrieved 2026-10-18, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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/tlc-nsml450-datasheet.pdf)