# 1210L200PR

**Littelfuse** · Resettable Fuses · 1210

1210L200PR from Littelfuse, 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 | Non-polarized PPTC terminal (solder-plated copper end termination) of the 2.00 A hold / 4.00 A trip, 6 V max, 100 A max fault-current resettable fuse, interchangeable with the other terminal. |
| 2 | 2 | passive | Non-polarized PPTC terminal (solder-plated copper end termination) of the 2.00 A hold / 4.00 A trip, 6 V max, 100 A max fault-current resettable fuse, interchangeable with the other terminal. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| 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 |
|---|---|---|---|---|---|---|---|
| Trip current (minimum) | I trip | 4 |  |  | A | 20°C still air | 1 |
| Minimum resistance (initial, un-soldered) | R min | 0.015 |  |  | Ω | initial (un-soldered) state | 1 |
| Hold current (maximum) | I hold |  |  | 2 | A | 20°C still air | 1 |
| Maximum voltage | V max |  |  | 6 | Vdc | at rated current (I max) | 1 |
| Maximum fault current | I max |  |  | 100 | A | at rated voltage (Vmax) | 1 |
| Maximum resistance after trip or reflow | R 1max |  |  | 0.07 | Ω | 20°C, measured one hour after tripping or reflow soldering of 260°C for 20 sec | 1 |
| Maximum time to trip |  |  |  | 1 | s | at 8.00 A current | 1 |
| Power dissipated in tripped state | Pd |  | 0.8 |  | W | tripped state at 20°C still air | 1 |
| Passive aging resistance change |  | -5 |  | 5 | % | +85°C, 1000 hours (typical resistance change) | 3 |
| Humidity aging resistance change |  | -5 |  | 5 | % | +85°C, 85% R.H., 1000 hours (typical resistance change) | 3 |
| Thermal shock resistance change |  |  | -30 |  | % | MIL-STD-202 Method 107, +85°C/-40°C, 20 times (typical resistance change) | 3 |
| Hold current vs ambient temperature | I hold |  | 2.6 |  | A | ambient -40°C | 2 |
| Hold current vs ambient temperature | I hold |  | 2.44 |  | A | ambient -20°C | 2 |
| Hold current vs ambient temperature | I hold |  | 2.35 |  | A | ambient 0°C | 2 |
| Hold current vs ambient temperature | I hold |  | 2 |  | A | ambient 20°C | 2 |
| Hold current vs ambient temperature | I hold |  | 1.78 |  | A | ambient 40°C | 2 |
| Hold current vs ambient temperature | I hold |  | 1.67 |  | A | ambient 50°C | 2 |
| Hold current vs ambient temperature | I hold |  | 1.5 |  | A | ambient 60°C | 2 |
| Hold current vs ambient temperature | I hold |  | 1.45 |  | A | ambient 70°C | 2 |
| Hold current vs ambient temperature | I hold |  | 1.1 |  | A | ambient 85°C | 2 |
| Operating temperature range |  | -40 |  | 85 | °C | Operating temperature | 3 |
| Maximum device surface temperature in tripped state |  |  |  | 125 | °C | tripped state | 3 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | Copper |  | Terminal Material Solder-Plated Copper (Solder Material: | 3 |

## CAD (KiCad official)

- Symbol: `1210L200PR`
- Footprint: `Fuse:Fuse_1210_3225Metric`
- 3D model: 1210 (KiCad packages3D, STEP)
- 3D model files: `1210l200pr-etched.step` / `1210l200pr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `1210l200pr.step` / `1210l200pr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Littelfuse datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589927017140822016) (6 pp, sha256 `137bfa2458616277`, retrieved 2026-10-18, 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/1210l200pr-datasheet.pdf)