# ECSR2512FR030K9

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

ECSR2512FR030K9 from RESI, 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 | Terminal 1 of an unpolarised resistor; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised resistor; either orientation. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | RESI |
| 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, from part-number code R030) | R |  | 30 |  | mΩ |  | 4 |
| Resistance tolerance (code F = ±1.0%) |  | -1 |  | 1 | % |  | 4 |
| TCR (code K = ±100ppm) |  | -100 |  | 100 | ppm/K |  | 2 |
| Rated power | P |  |  | 2 | W |  | 2 |
| Max. current |  |  |  | 16 | A | +70℃ | 2 |
| Overcurrent |  |  |  | 40 | A |  | 2 |
| Operating temperature range | T | -55 |  | 175 | ℃ |  | 2 |
| High temperature storage ΔR | ΔR | -1 |  | 1 | % | 1000h @ +170℃, unpowered | 4 |
| Temperature cycling ΔR | ΔR | -1 |  | 1 | % | -55℃ 30min to +155℃ 30min, 300 cycles | 4 |
| Load life ΔR | ΔR | -1 |  | 1 | % | 1000h @ +70℃, rated power, 90min on / 30min off | 4 |
| Substrate bending ΔR | ΔR | -1 |  | 1 | % | Bending 2mm, duration 60s | 4 |
| Low temperature operation ΔR | ΔR | -1 |  | 1 | % | -55℃, unpowered 1h, powered at rated voltage 45min, unpowered 15min | 4 |
| Insulation resistance |  | 1000 |  |  | MΩ | 100V DC between electrode and substrate for 60s | 4 |

## 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 | Copper | tin | Terminals - Red Copper Plated with Ni+Sn | 6 |

## CAD (KiCad official)

- Symbol: `ECSR2512FR030K9`
- Footprint: `Resistor_SMD:R_2512_6332Metric`
- 3D model: 2512 (KiCad packages3D, STEP)
- 3D model files: `ecsr2512fr030k9-etched.step` / `ecsr2512fr030k9-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ecsr2512fr030k9.step` / `ecsr2512fr030k9.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [RESI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590923151939620864) (9 pp, sha256 `7ec67e3cd7ae7e15`, 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/ecsr2512fr030k9-datasheet.pdf)