# JER1206F1R050

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

JER1206F1R050 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 | Terminal 1 of an unpolarised resistor; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised resistor; either orientation. |

## 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 (code F) |  | -1 |  | 1 | % | Part-number tolerance letter F = 1% | 1 |
| Temperature coefficient (TCR), 1206 1W, 2mΩ~100mΩ | TCR | -50 |  | 50 | ppm/℃ | Applies to 1W 1206 row for 2mΩ~100mΩ (MPN is 50mΩ); IEC60115-1 4.8, measured at +125℃ or +155℃ vs room temperature | 2 |
| Resistance | R |  | 50 |  | mΩ | Nominal value decoded from code R050 (50mΩ) | 1 |
| Rated power | P |  | 1 | 1 | W | 1206 1W rating; derate above 70℃ ambient per power derating curve | 2 |
| Resistance range, 1206 1W | R | 1 |  | 100 | mΩ | Resistance range printed for 1206 1W column | 2 |
| Insulation resistance, 1206 |  | 100 |  |  | MΩ | Printed as >100MΩ for 1206 column; no test conditions printed | 2 |
| Operating temperature range | T | -55 |  | 170 | ℃ | Operating Temperature Range as printed | 3 |
| Short time overload ΔR | ΔR | -1 |  | 1 | % | 5.0× rated power for 5 s, IEC60115-1 4.13 | 6 |
| Temperature cycling ΔR | ΔR | -1 |  | 1 | % | -55℃/+125℃, 1000 cycles, JESD22 JA-104; measured 24±4 h after test | 6 |
| High temperature exposure ΔR | ΔR | -1 |  | 1 | % | 125℃, 1000 h, MIL-STD-202 Method 108; measured 24±4 h after test | 6 |
| Low temperature operation ΔR | ΔR | -1 |  | 1 | % | -55℃, 45 min, IEC60115-1 4.23.4 | 6 |
| Biased humidity ΔR | ΔR | -1 |  | 1 | % | 85℃/85%RH, 1000 h, 10% of operating power; measured 24±4 h after test | 6 |
| Resistance to solder heat ΔR | ΔR | -1 |  | 1 | % | 260±5℃ solder bath, 10±1 s, IEC60115-1 4.18 | 7 |
| Operational life ΔR | ΔR | -1 |  | 1 | % | 70±2℃, rated current 1.5 h on / 0.5 h off, total 1000 +48/-0 h | 7 |
| Vibration ΔR | ΔR | -1 |  | 1 | % | 5g, 20 min, 12 cycles, 10-2000 Hz, MIL-STD-202 Method 204 | 7 |
| Mechanical shock ΔR | ΔR | -1 |  | 1 | % | 100g, half sine, 6 ms, MIL-STD-202 Method 213 | 7 |
| Terminal bending ΔR | ΔR | -1 |  | 1 | % | 2 mm deflection, 60 s, AEC-Q200-005 | 7 |
| Terminal strength ΔR | ΔR | -1 |  | 1 | % | 17.7 N applied for 60±1 s, AEC-Q200-006 | 7 |
| Thermal shock ΔR | ΔR | -1 |  | 1 | % | -55/+125℃, 300 cycles, MIL-STD-202 Method 107 | 7 |
| ESD ΔR | ΔR | -1 |  | 1 | % | 2 kV, 2 times at 1 s interval, AEC-Q200-002 | 7 |

## CAD (KiCad official)

- Symbol: `JER1206F1R050`
- Footprint: `Resistor_SMD:R_1206_3216Metric`
- 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files: `jer1206f1r050-etched.step` / `jer1206f1r050-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `jer1206f1r050.step` / `jer1206f1r050.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [jieerrui datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8604448673099235328) (7 pp, sha256 `f0578e1f31540152`, retrieved 2026-10-17, 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`, 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/jer1206f1r050-datasheet.pdf)