# JER1206F1R022

**jieerrui** · Current Sense Resistors / Shunt Resistors · 1206

JER1206F1R022 from jieerrui, in a 1206. 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 | First end electrode of the 22 mΩ (R022) alloy current-sense resistor, 1206 body 3.20×1.60 mm with 0.50±0.20 mm electrode width; non-polarized, interchangeable with the other terminal. |
| 2 | 2 | passive | Second end electrode of the 22 mΩ (R022) alloy current-sense resistor, 1W rated power at 70°C ambient, operating temperature -55°C to +170°C; non-polarized, interchangeable with the other terminal. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | jieerrui |
| Package | 1206 |
| 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 | % | MPN tolerance letter F = ±1% | 1 |
| Rated power | P |  | 1 |  | W | 1206 size, 1W rated power (MPN digit 1) | 1 |
| Resistance range | R | 1 |  | 100 | mΩ | 1206, 1W | 2 |
| Temperature coefficient of resistance | TCR | -50 |  | 50 | ppm/°C | 1206, 1W, 2mΩ~100mΩ; TCR referenced to room temperature, measured at +125°C or +155°C | 2 |
| Insulation resistance |  | 100 |  |  | MΩ | 1206, 1W | 2 |
| Operating temperature range |  | -55 |  | 170 | °C | Load power must be derated per the power curve above 70°C ambient | 3 |
| Short time overload ΔR | ΔR | -1 |  | 1 | % | 5.0× rated power applied for 5 s | 6 |
| Temperature cycling ΔR | ΔR | -1 |  | 1 | % | -55°C/+125°C, 1000 cycles; measured 24±4 h after test | 6 |
| High temperature exposure ΔR | ΔR | -1 |  | 1 | % | 125°C, 1000 h; measured 24±4 h after test | 6 |
| Low temperature operation ΔR | ΔR | -1 |  | 1 | % | -55°C, 45 min | 6 |
| Biased humidity ΔR | ΔR | -1 |  | 1 | % | 85°C/85%RH, 10% of operating power, 1000 h; measured 24±4 h after test | 6 |
| Resistance to solder heat ΔR | ΔR | -1 |  | 1 | % | Solder bath 260±5°C, 10±1 s | 6 |
| Terminal bending ΔR | ΔR | -1 |  | 1 | % | 2 mm deflection, 60 s | 7 |
| Mechanical shock ΔR | ΔR | -1 |  | 1 | % | 100g, half sine, 6 ms | 7 |
| Terminal strength ΔR | ΔR | -1 |  | 1 | % | 17.7N applied for 60±1 s | 7 |
| Thermal shock ΔR | ΔR | -1 |  | 1 | % | -55/+125°C, 300 cycles | 7 |
| Vibration ΔR | ΔR | -1 |  | 1 | % | 5g, 10-2000 Hz, 20 min, 12 cycles | 7 |
| Operational life ΔR | ΔR | -1 |  | 1 | % | 70±2°C, rated current 1.5 h on / 0.5 h off, 1000 +48/-0 h | 7 |
| ESD ΔR | ΔR | -1 |  | 1 | % | 2 kV, 2 times at 1 s interval | 7 |

## CAD (KiCad official)

- Symbol: `JER1206F1R022`
- Footprint: `Resistor_SMD:R_1206_3216Metric`
- 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files: `jer1206f1r022-etched.step` / `jer1206f1r022-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `jer1206f1r022.step` / `jer1206f1r022.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [jieerrui datasheet](docs/jer1206f1r022-datasheet.pdf) (7 pp, sha256 `6c0d359d39546b43`, retrieved 2026-10-19, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-5-5` (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/jer1206f1r022-datasheet.pdf)