# MFR50SFTE52-33K

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

MFR50SFTE52-33K 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 (code F) |  | -1 |  | 1 | % |  | 2 |
| Temperature coefficient of resistance (code E) | TCR | -50 |  | 50 | ppm/°C |  | 2 |
| Maximum Working Voltage (rated voltage, MFR50S column) |  |  |  | 300 | V |  | 3 |
| Maximum Overload Voltage (MFR50S column) |  |  |  | 600 | V |  | 3 |
| Voltage Proof on Insulation (MFR50S column) |  |  |  | 500 | V |  | 3 |
| Operating Temp. Range |  | -55 |  | 155 | °C |  | 3 |
| Insulation Resistance |  | 10000 |  |  | MΩ | In V-Block for 60 sec. | 4 |
| Short Time Overload resistance change | ΔR | -0.25 |  | 0.25 | % | 2.5 times RCWV for 5 sec. (appraisal ±0.25%+0.05Ω) | 4 |
| Periodic-pulse Overload resistance change | ΔR | -1 |  | 1 | % | 4 times RCWV, 10,000 cycles (1 Sec. on, 25 Sec. off) (appraisal ±1.0%+0.05Ω) | 4 |
| Damp Heat Steady State resistance change | ΔR | -1.5 |  | 1.5 | % | 40±2°C, 90-95% RH for 56 days, loaded with 0.1 times RCWV (appraisal ±1.5%+0.05Ω) | 4 |
| Endurance at 70°C resistance change | ΔR | -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) (appraisal ±1.5%+0.05Ω) | 4 |
| Temperature Cycling resistance change | ΔR | -0.75 |  | 0.75 | % | -55°C → Room Temp. → +155°C → Room Temp. (5 cycles) (appraisal ±0.75%+0.05Ω) | 4 |
| Resistance to Soldering Heat resistance change | ΔR | -0.25 |  | 0.25 | % | 260±3°C for 10±1 Sec., immersed to a point 3±0.5mm from the body (appraisal ±0.25%+0.05Ω) | 4 |
| Robustness of Terminations (direct load) |  | 2.5 |  |  | kg | Direct load for 10 Sec. in the direction of the terminal leads | 4 |
| Solderability coverage |  | 95 |  |  | % | 245±5°C for 3±0.5 Sec. | 4 |
| Power Rating (rated power, MFR50S = 1/2W) | P |  | 0.5 |  | W | at 70 °C | 3 |
| Nominal resistance (MPN code 33K) | R |  | 33 |  | KΩ |  | 2 |

## CAD (KiCad official)

- Symbol: `MFR50SFTE52-33K`
- 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/8755443856487919616) (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/mfr50sfte52-33k-datasheet.pdf)