# 046601.5NRHF

**Littelfuse** · Disposable Fuses · 1206

046601.5NRHF 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 | Terminal 1 of an unpolarised fuse; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised fuse; either orientation. |

## 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 |
|---|---|---|---|---|---|---|---|
| Max Voltage Rating |  |  |  | 63 | V |  | 1 |
| Interrupting Rating |  | 50 |  |  | A | @63 V AC/DC | 1 |
| Opening time, 100% of ampere rating |  | 4 |  |  | hours | Opening time at 25°C | 1 |
| Opening time, 200% of ampere rating |  |  |  | 5 | sec | Opening time at 25°C | 1 |
| Opening time, 300% of ampere rating |  |  |  | 0.2 | sec | Opening time at 25°C | 1 |
| Insulation Resistance |  | 10000 |  |  | ohms | After opening | 3 |
| Operating Temperature |  | -55 |  | 90 | °C | Consult temperature re-rating curve chart | 3 |
| Reflow peak temperature | TP |  |  | 260 | °C | Reflow; do not exceed 260°C | 2 |
| Wave soldering temperature |  |  |  | 260 | °C | Wave soldering, 10 seconds max. | 2 |
| Wave soldering time |  |  |  | 10 | seconds | Wave soldering at 260°C | 2 |
| Ampere Rating | IRAT |  | 1.5 |  | A | Amp code 01.5 (1.5 A product) | 1 |
| Nominal Cold Resistance |  |  | 0.046 |  | Ohms |  | 1 |
| Nominal Melting I2t | I2t |  | 0.1103 |  | A2sec |  | 1 |
| Nominal Voltage Drop |  |  | 82.97 |  | mV |  | 1 |
| Nom Power Dissipation |  |  | 0.1244 |  | W |  | 1 |

## CAD (KiCad official)

- Symbol: `046601.5NRHF`
- Footprint: `Fuse:Fuse_1206_3216Metric`
- 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files: `046601-5nrhf-etched.step` / `046601-5nrhf-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `046601-5nrhf.step` / `046601-5nrhf.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/8588903736676245504) (3 pp, sha256 `59e7ee52ef17c1fe`, retrieved 2026-10-19, 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/046601-5nrhf-datasheet.pdf)