# MFR2WSJT-73-8K2

**YAGEO** · Through Hole Resistors · R_Axial_DIN0414_L11.9mm_D4.5mm_P15.24mm_Horizontal

MFR2WSJT-73-8K2 from YAGEO, 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 | YAGEO |
| 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 |
|---|---|---|---|---|---|---|---|
| Resistance tolerance (J = ±5%) |  | -5 |  | 5 | % | Tolerance code J | 2 |
| Temperature coefficient of resistance |  | -50 |  | 50 | ppm/°C |  | 3 |
| Temperature coefficient of resistance |  | -100 |  | 100 | ppm/°C |  | 3 |
| Power rating | P |  | 2 |  | W | at 70 °C ambient (MFR2WS) | 3 |
| Maximum working voltage |  |  |  | 500 | V | MFR2WS column | 3 |
| Maximum overload voltage |  |  |  | 1000 | V | MFR2WS column | 3 |
| Voltage proof on insulation |  |  |  | 1000 | V | MFR2WS column | 3 |
| Resistance range | R | 1 |  | 4.7 | Ω | E24 & E96 series values; printed as 1Ω ~ 4M7Ω (max in MΩ) | 3 |
| Operating temperature range | T | -55 |  | 155 | °C |  | 3 |
| Insulation resistance |  | 10000 |  |  | MΩ | In V-Block for 60 sec. | 4 |
| Short time overload resistance change (±0.25%) | ΔR/R | -0.25 |  | 0.25 | % | 2.5 times RCWV for 5 sec. (not more than max overload voltage) | 4 |
| Short time overload resistance change additive term | ΔR |  |  | 0.05 | Ω | Printed as +0.05Ω; 2.5 times RCWV for 5 sec. | 4 |
| Periodic-pulse overload resistance change (±1.0%) | ΔR/R | -1 |  | 1 | % | 4 times RCWV, 10,000 cycles (1 Sec. on, 25 Sec. off) | 4 |
| Periodic-pulse overload resistance change additive term | ΔR |  |  | 0.05 | Ω | Printed as +0.05Ω; 4 times RCWV, 10,000 cycles | 4 |
| Damp heat steady state resistance change (±1.5%) | ΔR/R | -1.5 |  | 1.5 | % | 40±2°C, 90-95% RH, 56 days, loaded with 0.1 times RCWV | 4 |
| Damp heat steady state resistance change additive term | ΔR |  |  | 0.05 | Ω | Printed as +0.05Ω; 40±2°C, 90-95% RH, 56 days | 4 |
| Endurance at 70°C resistance change (±1.5%) | 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) | 4 |
| Endurance at 70°C resistance change additive term | ΔR |  |  | 0.05 | Ω | Printed as +0.05Ω; 70±2°C, 1,000 Hr. | 4 |
| Temperature cycling resistance change (±0.75%) | ΔR/R | -0.75 |  | 0.75 | % | -55°C to +155°C, 5 cycles | 4 |
| Temperature cycling resistance change additive term | ΔR |  |  | 0.05 | Ω | Printed as +0.05Ω; -55°C to +155°C, 5 cycles | 4 |
| Resistance to soldering heat resistance change (±0.25%) | ΔR/R | -0.25 |  | 0.25 | % | 260±3°C for 10±1 Sec., immersed to 3±0.5mm from body | 4 |
| Resistance to soldering heat resistance change additive term | ΔR |  |  | 0.05 | Ω | Printed as +0.05Ω; 260±3°C for 10±1 Sec. | 4 |

## CAD (KiCad official)

- Symbol: `MFR2WSJT-73-8K2`
- 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:** [YAGEO datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8755415166928601088) (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/mfr2wsjt-73-8k2-datasheet.pdf)