# 046602.5NR

**Littelfuse** · Disposable Fuses · 1206

046602.5NR from Littelfuse, 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 of two interchangeable tin-plated end terminations of the 2.5 A fast-acting thin-film fuse (rated 32 V AC/DC, 50 A interrupting rating). |
| 2 | 2 | passive | Second interchangeable tin-plated end termination of the 2.5 A fast-acting thin-film fuse (rated 32 V AC/DC, 50 A interrupting rating). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Littelfuse |
| 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 |
|---|---|---|---|---|---|---|---|
| Maximum voltage rating (2.50 A, 032/02.5 row) |  |  |  | 32 | V |  | 1 |
| Interrupting rating |  |  |  | 50 | A | @ 32VAC/VDC | 1 |
| Opening time at 100% of ampere rating |  | 4 |  |  | hours | 100% of ampere rating, 25°C | 1 |
| Opening time at 200% of ampere rating |  |  |  | 5 | sec. | 200% of ampere rating, 25°C | 1 |
| Opening time at 300% of ampere rating |  |  |  | 0.2 | sec. | 300% of ampere rating, 25°C | 1 |
| Insulation resistance (after opening) |  | 10000 |  |  | ohms | After opening | 3 |
| Operating temperature |  | -55 |  | 90 | °C | Consult temperature re-rating curve chart | 3 |
| Reflow peak temperature (TP), Pb-free assembly | TP |  |  | 260 | °C | Pb-free reflow; do not exceed 260°C | 2 |
| Wave soldering temperature |  |  |  | 260 | °C | Wave soldering | 2 |
| Wave soldering time |  |  |  | 10 | seconds | Wave soldering, 260°C | 2 |
| Ampere rating |  |  | 2.5 |  | A |  | 1 |
| Nominal cold resistance |  |  | 0.023 |  | Ohms |  | 1 |
| Nominal melting I2t |  |  | 0.3516 |  | A2 sec |  | 1 |
| Nominal voltage drop |  |  | 76.99 |  | mV |  | 1 |
| Nominal power dissipation |  |  | 0.1925 |  | W |  | 1 |

## CAD (KiCad official)

- Symbol: `046602.5NR`
- Footprint: `Fuse:Fuse_1206_3216Metric`
- 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files: `046602-5nr-etched.step` / `046602-5nr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `046602-5nr.step` / `046602-5nr.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/8603154292119384064) (3 pp, sha256 `62b449e2a25e303b`, 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/046602-5nr-datasheet.pdf)