# 046602.5NRHF

**Littelfuse** · Disposable Fuses · 1206

046602.5NRHF 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 fuse termination (100% tin over nickel over copper) of the 2.5 A rated element, 32 V max, 50 A @ 32 V AC/DC interrupting rating, 0.023 ohm nominal cold resistance. |
| 2 | 2 | passive | Second fuse termination (100% tin over nickel over copper), interchangeable with the other since the fuse is non-polarized, 2.5 A rated, 32 V max. |

## 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 |
|---|---|---|---|---|---|---|---|
| Opening time at 100% of ampere rating |  | 4 |  |  | hours | Opening time at 25°C | 1 |
| Opening time at 200% of ampere rating |  |  |  | 5 | sec | Opening time at 25°C | 1 |
| Opening time at 300% of ampere rating |  |  |  | 0.2 | sec | Opening time at 25°C | 1 |
| Insulation resistance |  | 10000 |  |  | ohms | After opening; Greater than 10,000 ohms | 3 |
| Operating temperature |  | -55 |  | 90 | °C | Consult temperature re-rating curve chart | 3 |
| Max voltage rating |  |  |  | 32 | V | 2.50 A (amp code 02.5) row | 1 |
| Peak temperature (TP) in Pb-free reflow | TP |  |  | 260 | °C | Printed 260+0/-5 °C; Do not exceed 260°C | 2 |
| Wave soldering temperature |  |  |  | 260 | °C | Wave soldering | 2 |
| Wave soldering time |  |  |  | 10 | sec | Wave soldering 260°C | 2 |
| Ampere rating |  |  | 2.5 |  | A | Amp code 02.5 | 1 |
| Nominal cold resistance |  |  | 0.023 |  | Ohms | Nominal, 2.50 A row | 1 |
| Nominal melting I2t | I2t |  | 0.3516 |  | A2sec | Nominal, 2.50 A row | 1 |
| Nominal voltage drop |  |  | 76.99 |  | mV | Nominal, 2.50 A row | 1 |
| Nominal power dissipation |  |  | 0.1925 |  | W | Nominal, 2.50 A row | 1 |

## CAD (KiCad official)

- Symbol: `046602.5NRHF`
- Footprint: `Fuse:Fuse_1206_3216Metric`
- 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files: `046602-5nrhf-etched.step` / `046602-5nrhf-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `046602-5nrhf.step` / `046602-5nrhf.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/8588903719710691328) (3 pp, sha256 `59e7ee52ef17c1fe`, retrieved 2026-10-15, 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/046602-5nrhf-datasheet.pdf)