# FRM252WFR030TN

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

FRM252WFR030TN from FOJAN, 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 | FOJAN |
| 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 |
|---|---|---|---|---|---|---|---|
| Tolerance (code F = ±1%) |  | -1 |  | 1 | % | Part-number tolerance code F | 2 |
| Temperature coefficient of resistance | T.C.R. | -50 |  | 50 | ppm/°C |  | 5 |
| Resistance range (2512) |  | 1 |  | 680 | mΩ |  | 5 |
| Power rating |  |  |  | 2 | W | at P70 | 5 |
| Rated current |  |  |  | 63 | A |  | 5 |
| Max overload current |  |  |  | 141 | A |  | 5 |
| Operating temperature range |  | -55 |  | 170 | °C |  | 5 |
| Dielectric withstanding voltage |  |  |  | 500 | V DC | Listed in Features | 2 |
| Hand soldering iron temperature |  | -10 | 350 | 10 | °C | 350±10 °C, less than 3 s, avoid touching body | 9 |
| Change in resistance ΔR, high temperature exposure | ΔR | -1 |  | 1 | % | 170 °C, 1000 h, measured 24 h after test | 6 |
| Change in resistance ΔR, low temperature exposure | ΔR | -0.5 |  | 0.5 | % | -55 °C, 1000 h, measured 24 h after test | 6 |
| Change in resistance ΔR, temperature cycling | ΔR | -0.5 |  | 0.5 | % | 1000 cycles, -55 °C to 125 °C | 6 |
| Change in resistance ΔR, short time overload | ΔR | -0.5 |  | 0.5 | % | 5 × rated power for 5 s | 6 |
| Change in resistance ΔR, moisture resistance | ΔR | -1 |  | 1 | % | 10 cycles of 24 h | 6 |
| Change in resistance ΔR, biased humidity | ΔR | -0.5 |  | 0.5 | % | 10% rated power, 85 °C, RH 85%, 1000 h | 6 |
| Change in resistance ΔR, load life | ΔR | -1 |  | 1 | % | 1000 h at +70 °C, 1.5 h on / 0.5 h off | 7 |
| Change in resistance ΔR, resistance to soldering heat | ΔR | -0.5 |  | 0.5 | % | 260 ±5 °C solder, 10 ±1 s dwell | 7 |
| Change in resistance ΔR, mechanical shock | ΔR | -0.5 |  | 0.5 | % | 100 g, 6 ms half sine | 7 |
| Change in resistance ΔR, vibration | ΔR | -0.5 |  | 0.5 | % | 5 g, 10-2000 Hz, 12 cycles per axis | 7 |
| Change in resistance ΔR, board flex | ΔR | -0.5 |  | 0.5 | % | Min 2 mm deflection, 60 s | 7 |
| Change in resistance ΔR, thermal shock | ΔR | -1 |  | 1 | % | -55 °C/+155 °C, 1000 cycles | 7 |
| Change in resistance ΔR, ESD | ΔR | -1 |  | 1 | % | Direct contact ±6 kV; air discharge up to 25 kV | 7 |

## CAD (KiCad official)

- Symbol: `FRM252WFR030TN`
- Footprint: `Resistor_SMD:R_2512_6332Metric`
- 3D model: 2512 (KiCad packages3D, STEP)
- 3D model files: `frm252wfr030tn-etched.step` / `frm252wfr030tn-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `frm252wfr030tn.step` / `frm252wfr030tn.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [FOJAN datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8763504920727707648) (12 pp, sha256 `13a1c74e6b23cc10`, 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/frm252wfr030tn-datasheet.pdf)