# RT0402FRE07187KL

**YAGEO(国巨)** · IC · 0402

RT0402FRE07187KL from YAGEO(国巨), in a 0402. 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(国巨) |
| Package | 0402 |
| Category |  |
| 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 |  | 1 | % |  | 4 |
| Temperature coefficient of resistance (code E = ±50 ppm/°C) | TCR | -50 |  | 50 | ppm/°C |  | 4 |
| Operating temperature range, precision type |  | -10 |  | 85 | °C | Precision operation mode | 4 |
| Operating temperature range, standard type |  | -55 |  | 125 | °C | Standard operation mode | 4 |
| Operating temperature range, power type |  | -55 |  | 155 | °C | Power operation mode | 4 |
| Maximum working voltage |  |  |  | 12.5 | V | RT0402 precision operation mode | 4 |
| Maximum working voltage |  |  |  | 50 | V | RT0402 standard operation mode | 4 |
| Maximum overload voltage |  |  |  | 25 | V | RT0402 precision operation mode | 4 |
| Maximum overload voltage |  |  |  | 100 | V | RT0402 standard operation mode | 4 |
| Dielectric withstand voltage (all RT0402 modes) |  |  |  | 75 | V |  | 4 |
| Insulation resistance |  | 10000 |  |  | MΩ | Rated continuous overload voltage applied 1 min | 7 |
| ΔR/R after thermal shock, ±(0.5% + 0.05Ω absolute) | ΔR/R | -0.5 |  | 0.5 | % | -55°C/+125°C, 25 cycles | 7 |
| ΔR/R after low temperature operation, ±(0.5% + 0.05Ω absolute) | ΔR/R | -0.5 |  | 0.5 | % | -65°C, rated working voltage applied 45 min | 7 |
| ΔR/R after short time overload, ±(0.5% + 0.05Ω absolute) | ΔR/R | -0.5 |  | 0.5 | % | 2.5 × rated voltage, 5 s | 7 |
| ΔR/R after resistance to soldering heat, ±(0.5% + 0.05Ω absolute) | ΔR/R | -0.5 |  | 0.5 | % | 260°C solder pot, 10 s | 7 |
| ΔR/R after moisture resistance, ±(0.5% + 0.05Ω absolute) | ΔR/R | -0.5 |  | 0.5 | % | 42 damp heat cycles, 1000 h | 8 |
| ΔR/R after life test, ±(0.5% + 0.05Ω absolute) | ΔR/R | -0.5 |  | 0.5 | % | 70°C, rated voltage 1.5 h on / 0.5 h off, 1000 h | 8 |
| ΔR/R after bending strength, ±(0.25% + 0.05Ω absolute) | ΔR/R | -0.25 |  | 0.25 | % | Board bent, 5±1 s | 8 |

## 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 |  | tin | L = Lead free terminations (pure Tin) SCOPE | 2 |

## CAD (KiCad official)

- Symbol: `RT0402FRE07187KL`
- Footprint: `Resistor_SMD:R_0402_1005Metric`
- 3D model: 0402 (KiCad packages3D, STEP)
- 3D model files: `rt0402fre07187kl-etched.step` / `rt0402fre07187kl-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rt0402fre07187kl.step` / `rt0402fre07187kl.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [YAGEO(国巨) datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8604424740174118912) (9 pp, sha256 `5d7ddc33859cec8e`, retrieved 2026-10-17, 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/rt0402fre07187kl-datasheet.pdf)