# MF0W2JJ0301A10

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

MF0W2JJ0301A10 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 |  | -5 |  | 5 | % | Part-number tolerance code J = ±5% | 2 |
| Temperature coefficient (TCR) | TCR | -200 |  | 200 | ppm/°C | Standard ±5% row, 1Ω~1MΩ; part-number PPM code J = 200PPM | 5 |
| Rated power | P |  |  | 0.5 | W | Printed as 1/2W (normal size, code W2) | 2 |
| Max working voltage |  |  |  | 350 | V | MF 1/2W | 4 |
| Max overload voltage |  |  |  | 700 | V | MF 1/2W | 4 |
| Dielectric withstanding voltage |  |  |  | 700 | V | MF 1/2W | 4 |
| Ambient operating temperature (power rating) |  | -55 |  | 155 | °C | Full rating to 70 °C, derates to zero at 155 °C | 5 |
| Storage temperature (recommended) |  | 15 |  | 35 | °C | Recommended warehouse storage | 8 |
| Storage humidity (recommended) |  | 25 |  | 75 | %RH | Recommended warehouse storage | 8 |
| Short-time overload resistance change | ΔR/R | -0.5 |  | 0.5 | % | Limit ±(0.5%+0.05 Ω); 2.5×RCWV or max overload, 5 s | 6 |
| Pulse overload resistance change | ΔR/R | -1 |  | 1 | % | Limit ±(1%+0.05); 4×RCWV or max overload, 10,000 cycles | 6 |
| Resistance to soldering heat resistance change | ΔR/R | -1 |  | 1 | % | Limit ±(1%+0.05 Ω); 260±5 °C solder, 10±1 s | 6 |
| Rapid change of temperature resistance change | ΔR/R | -1 |  | 1 | % | Limit ±(1%+0.05 Ω); −55 °C / 155 °C, 100 cycles | 6 |
| Load life in humidity resistance change (normal type) | ΔR/R | -1.5 |  | 1.5 | % | 40±2 °C, 90-95% RH, 1,000 h | 6 |
| Load life resistance change (normal type) | ΔR/R | -1.5 |  | 1.5 | % | 70±2 °C ambient, 1,000 h | 6 |
| Low temperature storage resistance change (normal type) | ΔR/R | -1.5 |  | 1.5 | % | −55 °C, 2 h | 6 |
| High temperature exposure resistance change (normal type) | ΔR/R | -1.5 |  | 1.5 | % | 155 °C, 16 h | 6 |
| Solderability coverage |  | 95 |  |  | % | Coverage must be over 95%; solder 245±3 °C, 2-3 s | 6 |

## 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: `MF0W2JJ0301A10`
- 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/8756509204272566272) (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/mf0w2jj0301a10-datasheet.pdf)