# MF0W2FF3303A10

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

MF0W2FF3303A10 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 (MPN digit 6 = F) |  | -1 |  | 1 | % | F=±1% per part-numbering table | 2 |
| Temperature coefficient (MPN digit 7 = F) | TCR | -50 |  | 50 | PPM/℃ | Standard ±1% resistance range, F=±50PPM | 5 |
| Max working voltage (MF 1/2W normal type) |  |  |  | 350 | V | Max working voltage; RCWV must not exceed applicable maximum | 4 |
| Max overload voltage (MF 1/2W normal type) |  |  |  | 700 | V | Overload = 2.5×RCWV or max overload voltage, whichever is lower | 4 |
| Dielectric withstanding voltage (MF 1/2W normal type) |  |  |  | 700 | V | Dielectric withstanding voltage, standard (non-flame-retardant) type | 4 |
| Ambient temperature range for power rating |  | -55 |  | 155 | ℃ | Continuous load; power constant to 70℃, derated to zero from 70℃ to 155℃ | 5 |
| Short-time overload ΔR/R | ΔR/R | -0.5 |  | 0.5 | % | ΔR/R ≤ ±(0.5%+0.05 Ω); 2.5×RCWV or max overload voltage for 5 s | 6 |
| Pulse overload ΔR/R | ΔR/R | -1 |  | 1 | % | ΔR/R ≤ ±(1%+0.05); 10,000 cycles (1 s ON, 25 s OFF) at 4×RCWV or max overload | 6 |
| Resistance to soldering heat ΔR/R | ΔR/R | -1 |  | 1 | % | ΔR/R ≤ ±(1%+0.05 Ω); 260℃±5℃ solder, 10±1 s | 6 |
| Rapid change of temperature ΔR/R | ΔR/R | -1 |  | 1 | % | ΔR/R ≤ ±(1%+0.05 Ω); -55℃ and 155℃, 100 cycles | 6 |
| Load life in humidity ΔR/R | ΔR/R | -1.5 |  | 1.5 | % | Normal type; 40℃±2℃, 90 to 95% RH, 1,000 h at RCWV | 6 |
| Load life ΔR/R | ΔR/R | -1.5 |  | 1.5 | % | Normal type; 1,000 h at 70℃±2℃, 1.5 h ON / 0.5 h OFF, RCWV | 6 |
| Low temperature storage ΔR/R | ΔR/R | -1.5 |  | 1.5 | % | Normal type; -55℃ for 2 h | 6 |
| High temperature exposure ΔR/R | ΔR/R | -1.5 |  | 1.5 | % | Normal type; 155℃ for 16 h | 6 |
| Recommended warehouse storage temperature |  | 15 |  | 35 | ℃ | Recommended storage (not operation) | 8 |
| Recommended warehouse storage humidity |  | 25 |  | 75 | %RH | Recommended storage (not operation) | 8 |

## 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: `MF0W2FF3303A10`
- 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/8756509136484089856) (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/mf0w2ff3303a10-datasheet.pdf)