component
04661.75NRHF
Public Made by Adomby adom
Littelfuse Disposable Fuses, 1206. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdown04661.75NRHF
Littelfuse · Disposable Fuses · 1206
04661.75NRHF 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 tin-plated end termination of the non-polarized 0.75 A fast-acting fuse (rated 63 V, 50 A interrupting at 63 V AC/DC); interchangeable with the other terminal. |
| 2 | 2 | passive | Other tin-plated end termination of the non-polarized 0.75 A fast-acting fuse (rated 63 V, 50 A interrupting at 63 V AC/DC); interchangeable with the other terminal. |
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 | 25°C | 1 | |||
| Opening time at 200% of ampere rating | 5 | sec | 25°C | 1 | |||
| Opening time at 300% of ampere rating | 0.2 | sec | 25°C | 1 | |||
| Insulation resistance (after opening) | 10000 | ohms | After opening | 3 | |||
| Maximum voltage rating | 63 | V | 1 | ||||
| Interrupting rating | 50 | A | @63 V AC/DC, measured at rated voltage | 1 | |||
| Ampere rating | 1.75 | A | 1 | ||||
| Nominal cold resistance | 0.038 | Ohms | Measured at 10% of rated current, 25ºC (electrical specification note 1) | 1 | |||
| Nominal melting I2t | 0.1835 | A2sec | 1 | ||||
| Nominal voltage drop | 80.73 | mV | 1 | ||||
| Nominal power dissipation | 0.1413 | W | 1 | ||||
| Operating temperature | -55 | 90 | °C | Consult temperature re-rating curve; 25% standard re-rating applies for continuous operation | 3 | ||
| Peak reflow temperature (Pb-free) | TP | 260 | °C | Pb-free reflow; do not exceed 260°C; tolerance +0/-5 °C | 2 | ||
| Wave solder temperature | 260 | °C | Wave soldering, 10 seconds max. | 2 |
CAD (KiCad official)
- Symbol:
04661.75NRHF - Footprint:
Fuse:Fuse_1206_3216Metric - 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files:
04661-75nrhf-etched.step/04661-75nrhf-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);04661-75nrhf.step/04661-75nrhf.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Littelfuse datasheet (3 pp, sha256
59e7ee52ef17c1fe, retrieved 2026-10-19, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).