# MF02SFF1103A10

**UNI ROYAL Uniroyal Elec** · Through Hole Resistors · R_Axial_DIN0414_L11.9mm_D4.5mm_P15.24mm_Horizontal

MF02SFF1103A10 from UNI ROYAL Uniroyal Elec, in a R_Axial_DIN0414_L11.9mm_D4.5mm_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_DIN0414_L11.9mm_D4.5mm_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 |
|---|---|---|---|---|---|---|---|
| Tolerance (part-number code F = ±1%) |  | -1 |  | 1 | % |  | 2 |
| Temperature coefficient (code F = 50 PPM; ±1% row of resistance range table) | TCR | -50 |  | 50 | PPM/℃ | ±1% tolerance, 51.1Ω~1MΩ range | 5 |
| Max working voltage (MF 2WS, standard type) |  |  |  | 500 | V |  | 4 |
| Max overload voltage (MF 2WS) |  |  |  | 1000 | V |  | 4 |
| Dielectric withstanding voltage (MF 2WS) |  |  |  | 1000 | V | AC potential per dimension table, 60-70 s | 4 |
| Rated power (part-number code 2S = 2W small size) | P |  |  | 2 | W | Ambient up to 70℃; derates to zero at 155℃ | 5 |
| Ambient operating temperature range | Tamb | -55 |  | 155 | ℃ | Power derated above 70℃ | 5 |
| Recommended storage temperature |  | 15 |  | 35 | ℃ | Warehouse storage | 8 |
| Recommended storage humidity |  | 25 |  | 75 | %RH | Warehouse storage | 8 |
| Short-time overload resistance change, ΔR/R ≤ ±(0.5% + 0.05 Ω) | ΔR/R | -0.5 |  | 0.5 | % | 2.5× RCWV or max overload voltage, whichever lower, 5 s | 6 |
| Pulse overload resistance change, ΔR/R ≤ ±(1% + 0.05) | ΔR/R | -1 |  | 1 | % | 10,000 cycles (1 s ON, 25 s OFF) at 4× RCWV or max overload, whichever less | 6 |
| Resistance to soldering heat, ΔR/R ≤ ±(1% + 0.05 Ω) | ΔR/R | -1 |  | 1 | % | 260±5℃ solder, 10±1 s, leads 2.0-2.5 mm from body | 6 |
| Rapid change of temperature, ΔR/R ≤ ±(1% + 0.05 Ω) | ΔR/R | -1 |  | 1 | % | -55℃ 30 min and 155℃ 30 min; 100 cycles | 6 |
| Load life in humidity, normal type ΔR/R ≤ ±1.5% | ΔR/R | -1.5 |  | 1.5 | % | 1,000 h, 1.5 h ON / 0.5 h OFF at RCWV, 40±2℃, 90-95% RH | 6 |
| Load life, normal type ΔR/R ≤ ±1.5% | ΔR/R | -1.5 |  | 1.5 | % | 1,000 h at RCWV, 1.5 h ON / 0.5 h OFF, 70±2℃ ambient | 6 |
| Low temperature storage, normal type ΔR/R ≤ ±1.5% | ΔR/R | -1.5 |  | 1.5 | % | -55℃, 2 h | 6 |
| High temperature exposure, normal type ΔR/R ≤ ±1.5% | ΔR/R | -1.5 |  | 1.5 | % | 155℃, 16 h | 6 |
| Solderability coverage |  | 95 |  |  | % | Solder 245±3℃, dwell 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: `MF02SFF1103A10`
- Footprint: `Resistor_THT:R_Axial_DIN0414_L11.9mm_D4.5mm_P15.24mm_Horizontal`
- 3D model: R_Axial_DIN0414_L11.9mm_D4.5mm_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/8756509588679987200) (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/mf02sff1103a10-datasheet.pdf)