# MF0W2FF2401A10

**UNI ROYAL Uniroyal Elec** · Through Hole Resistors · R_Axial_DIN0411_L9.9mm_D3.6mm_P15.24mm_Horizontal

MF0W2FF2401A10 from UNI ROYAL Uniroyal Elec, in a R_Axial_DIN0411_L9.9mm_D3.6mm_P15.24mm_Horizontal. 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 resistor; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised resistor; either orientation. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | UNI ROYAL Uniroyal Elec |
| Package | R_Axial_DIN0411_L9.9mm_D3.6mm_P15.24mm_Horizontal |
| Category | Resistors |
| 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 |
|---|---|---|---|---|---|---|---|
| Resistance tolerance |  | -1 |  | 1 | % | MPN 6th digit F = ±1% | 2 |
| Temperature coefficient |  | -50 |  | 50 | PPM/℃ | MPN 7th digit F = ±50PPM; MF 1/2W standard ±1% range, TCR ±50 | 5 |
| Max working voltage |  |  |  | 350 | V | MF 1/2W, max working voltage | 4 |
| Max overload voltage |  |  |  | 700 | V | MF 1/2W, max overload voltage | 4 |
| Dielectric withstanding voltage |  |  |  | 700 | V | MF 1/2W, dielectric withstanding voltage | 4 |
| Flame retardant withstanding voltage |  |  |  | 250 | V | MF 1/2W, flame retardant type column; not applicable to standard product (3rd digit 0) | 4 |
| Short-time overload resistance change | ΔR/R | -0.5 |  | 0.5 | % | ΔR/R ≤ ±(0.5%+0.05 Ω); 2.5 times RCWV or max overload voltage whichever lower for 5 s | 6 |
| Pulse overload resistance change | ΔR/R | -1 |  | 1 | % | ΔR/R ≤ ±(1%+0.05); 10,000 cycles (1 s ON, 25 s OFF) at 4 times RCWV or max overload whichever less | 6 |
| Resistance to soldering heat resistance change | ΔR/R | -1 |  | 1 | % | ΔR/R ≤ ±(1%+0.05 Ω); leads immersed 2.0-2.5mm from body in 260℃±5℃ solder for 10±1 seconds | 6 |
| Rapid change of temperature resistance change | ΔR/R | -1 |  | 1 | % | ΔR/R ≤ ±(1%+0.05 Ω); 30 min at -55℃ and 30 min at 155℃; 100 cycles | 6 |
| Load life in humidity resistance change | ΔR/R | -1.5 |  | 1.5 | % | Normal type ΔR/R ≤ ±1.5%; 40℃±2℃, 90 to 95% RH, 1,000 h (1.5 h ON, 0.5 h OFF) at RCWV or max working voltage whichever less | 6 |
| Load life resistance change | ΔR/R | -1.5 |  | 1.5 | % | Normal type ΔR/R ≤ ±1.5%; 1,000 h at RCWV or max working voltage whichever less, duty 1.5 h ON 0.5 h OFF at 70℃±2℃ ambient | 6 |
| Low temperature storage resistance change | ΔR/R | -1.5 |  | 1.5 | % | Normal type ΔR/R ≤ ±1.5%; -55℃ for 2H | 6 |
| High temperature exposure resistance change | ΔR/R | -1.5 |  | 1.5 | % | Normal type ΔR/R ≤ ±1.5%; 155℃ for 16H | 6 |
| Solderability coverage |  | 95 |  |  | % | Coverage must be over 95%; solder test 245℃±3℃, dwell 2~3 seconds | 6 |
| Operating ambient temperature range |  | -55 |  | 155 | ℃ | Ambient temperature range for power rating | 5 |
| Full rated power ambient temperature limit |  |  |  | 70 | ℃ | Power rating constant from -55 to 70℃ ambient | 5 |
| Power derated to zero ambient temperature |  |  |  | 155 | ℃ | Power derated to zero when temperature rises from 70 to 155℃ | 5 |
| Recommended storage temperature |  | 15 |  | 35 | ℃ | Manufacturer recommended warehouse storage | 8 |
| Recommended storage relative humidity |  | 25 |  | 75 | %RH | Manufacturer recommended warehouse storage | 8 |
| Rated power | P |  | 0.5 |  | W | MF 1/2W normal size, printed as 1/2W (MPN 4th-5th digits W2) | 2 |

## 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 | tin | 4 Lead Wire Tin solder coated copper wire | 5 |

## CAD (KiCad official)

- Symbol: `MF0W2FF2401A10`
- Footprint: `Resistor_THT:R_Axial_DIN0411_L9.9mm_D3.6mm_P15.24mm_Horizontal`
- 3D model: R_Axial_DIN0411_L9.9mm_D3.6mm_P15.24mm_Horizontal (KiCad packages3D, STEP)

## Provenance

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

- **Datasheet:** [UNI ROYAL Uniroyal Elec datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8756509694670184448) (8 pp, sha256 `58cca3f1fd846c5b`, retrieved 2026-11-06, 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/mf0w2ff2401a10-datasheet.pdf)