# MFR-25FBF52-9K53

**YAGEO** · Through Hole Resistors · R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal

MFR-25FBF52-9K53 from YAGEO, in a R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_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 | YAGEO |
| Package | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_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 | % | Tolerance code F = ±1% | 2 |
| Temperature coefficient of resistance | TCR | -100 |  | 100 | ppm/°C | Code F = ±100ppm/°C | 2 |
| Maximum Working Voltage |  |  |  | 250 | V | MFR-25 column | 3 |
| Maximum Overload Voltage |  |  |  | 500 | V | MFR-25 column | 3 |
| Voltage Proof on Insulation |  |  |  | 500 | V | MFR-25 column | 3 |
| Operating Temp. Range | T | -55 |  | 155 | °C |  | 3 |
| Insulation Resistance |  | 10000 |  |  | MΩ | In V-Block for 60 sec (IEC 60115-1 4.6) | 4 |
| Short Time Overload, resistance change | ΔR/R | -0.25 |  | 0.25 | % | 2.5 times RCWV for 5 sec, not more than maximum overload voltage; plus additional ±0.05Ω term | 4 |
| Periodic-pulse Overload, resistance change | ΔR/R | -1 |  | 1 | % | 4 times RCWV, 10,000 cycles (1 Sec on, 25 Sec off); plus additional ±0.05Ω term | 4 |
| Damp Heat Steady State, resistance change | ΔR/R | -1.5 |  | 1.5 | % | 40±2°C, 90-95% RH for 56 days, loaded with 0.1 times RCWV; plus additional ±0.05Ω term | 4 |
| Endurance at 70°C, resistance change | ΔR/R | -1.5 |  | 1.5 | % | 70±2°C at RCWV (or Umax, whichever less) for 1,000 Hr (1.5 Hr on, 0.5 Hr off); plus additional ±0.05Ω term | 4 |
| Temperature Cycling, resistance change | ΔR/R | -0.75 |  | 0.75 | % | -55°C to +155°C to Room Temp (5 cycles); plus additional ±0.05Ω term | 4 |
| Resistance to Soldering Heat, resistance change | ΔR/R | -0.25 |  | 0.25 | % | 260±3°C for 10±1 Sec, immersed to 3±0.5mm from body; plus additional ±0.05Ω term | 4 |

## CAD (KiCad official)

- Symbol: `MFR-25FBF52-9K53`
- Footprint: `Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal`
- 3D model: R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal (KiCad packages3D, STEP)

## Provenance

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

- **Datasheet:** [YAGEO datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8755390182676291584) (17 pp, sha256 `b460acdb47646977`, 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/mfr-25fbf52-9k53-datasheet.pdf)