# JER2512F3R220

**jieerrui** · Current Sense Resistors / Shunt Resistors · 2512

JER2512F3R220 from jieerrui, in a 2512. 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 terminal electrode of the 2512 alloy current-sense resistor (220mΩ, marked R220, 3W rated per part code); the datasheet shows two end electrodes, 0.90±0.20mm wide for the small-electrode type. |
| 2 | 2 | passive | Second terminal electrode of the 2512 alloy current-sense resistor, interchangeable with pin 1; operating temperature range is -55°C to +170°C with power derating above 70°C. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | jieerrui |
| Package | 2512 |
| 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 (nominal, code R220) |  |  | 220 |  | mΩ |  | 2 |
| Resistance tolerance (code F = 1%) |  | -1 |  | 1 | % | Part-number tolerance letter F | 1 |
| Temperature coefficient of resistance | TCR | -50 |  | 50 | ppm/℃ | 2512, 2mΩ~500mΩ range | 2 |
| Rated power (2512, 3W type) |  |  |  | 3 | W | Derate per power curve above 70℃ ambient | 2 |
| Insulation resistance |  | 100 |  |  | MΩ |  | 2 |
| Operating temperature range |  | -55 |  | 170 | ℃ |  | 3 |
| Short time overload, ΔR | ΔR | -1 |  | 1 | % | 5.0x rated power for 5 s; IEC60115-1 4.13 | 6 |
| Temperature cycling, ΔR | ΔR | -1 |  | 1 | % | -55℃/+125℃, 1000 cycles; JESD22 JA-104 | 6 |
| High temperature exposure, ΔR | ΔR | -1 |  | 1 | % | 125℃, 1000 h; MIL-STD-202 108 | 6 |
| Low temperature operation, ΔR | ΔR | -1 |  | 1 | % | -55℃, 45 min; IEC60115-1 4.23.4 | 6 |
| Biased humidity, ΔR | ΔR | -1 |  | 1 | % | 10% of operating power, 85℃/85%RH, 1000 h | 6 |
| Solderability, electrode coverage |  | 95 |  |  | % | J-STD-002B test B, 245±5℃, 2~3 s | 6 |
| Operational life, ΔR | ΔR | -1 |  | 1 | % | 70±2℃, rated current 1.5 h on / 0.5 h off, 1000 h | 7 |
| Resistance to vibration, ΔR | ΔR | -1 |  | 1 | % | 5g, 10-2000 Hz, 12 cycles, 20 min; MIL-STD-202 204 | 7 |
| Resistance to solder heat, ΔR | ΔR | -1 |  | 1 | % | 260±5℃, 10±1 s; IEC60115-1 4.18 | 7 |
| Terminal bending, ΔR | ΔR | -1 |  | 1 | % | 2 mm deflection, 60 s; AEC-Q200-005 | 7 |
| Mechanical shock, ΔR | ΔR | -1 |  | 1 | % | 100g, 6 ms half sine; MIL-STD-202 213 | 7 |
| Terminal strength, ΔR | ΔR | -1 |  | 1 | % | 17.7 N, 60±1 s; AEC-Q200-006 | 7 |
| Thermal shock, ΔR | ΔR | -1 |  | 1 | % | -55/+125℃, 300 cycles; MIL-STD-202 107 | 7 |
| ESD, ΔR | ΔR | -1 |  | 1 | % | 2 kV, 2 times/1 s; AEC-Q200-002 | 7 |

## CAD (KiCad official)

- Symbol: `JER2512F3R220`
- Footprint: `Resistor_SMD:R_2512_6332Metric`
- 3D model: 2512 (KiCad packages3D, STEP)
- 3D model files: `jer2512f3r220-etched.step` / `jer2512f3r220-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `jer2512f3r220.step` / `jer2512f3r220.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [jieerrui datasheet](docs/jer2512f3r220-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/jer2512f3r220-datasheet.pdf)