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frm252wjr001tn
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FOJAN Current Sense Resistors / Shunt Resistors, 2512. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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FRM252WJR001TN
FOJAN · Current Sense Resistors / Shunt Resistors · 2512
FRM252WJR001TN 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 | First alloy-resistor electrode (Sn/Ni/Cu plated terminal) of the 2512 chip, 6.4x3.2 mm body, rated 2 W at 70°C and 63 A rated current, with recommended pad a=4.0 mm, b=2.1 mm; the Kelvin voltage-sense point is on the underside of this terminal. |
| 2 | 2 | passive | Second alloy-resistor electrode (Sn/Ni/Cu plated terminal) of the 2512 chip, non-polarized and interchangeable with the first, with 141 A max overload current and -55°C to 170°C operating range; the Kelvin voltage-sense point is on the underside of this terminal. |
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 |
|---|---|---|---|---|---|---|---|
| Resistance tolerance (part number code J = ±5%) | -5 | 5 | % | 2 | |||
| Resistance (nominal, marking R001 = 1 mΩ) | R | 1 | mΩ | 6 | |||
| Resistance range (2512 standard) | 1 | 680 | mΩ | 5 | |||
| T.C.R. | TCR | -50 | 50 | PPM/℃ | 5 | ||
| Power Rating | 2 | W | at P70 | 5 | |||
| Rated Current | 63 | A | 5 | ||||
| Max overload Current | 141 | A | 5 | ||||
| Operating Temperature | -55 | 170 | °C | 5 | |||
| ΔR High Temperature Exposure (Storage) | ΔR | -1 | 1 | % | T=170℃, 1000 hrs, measured 24 hrs after test | 6 | |
| ΔR Low Temperature Exposure (Storage) | ΔR | -0.5 | 0.5 | % | T=-55ºC, 1000 hours, measured 24 hrs after test | 6 | |
| ΔR Temperature Cycling | ΔR | -0.5 | 0.5 | % | 1000 cycles (-55℃ to 125℃), measured 24 hrs after test | 6 | |
| ΔR Short time overload | ΔR | -0.5 | 0.5 | % | 5 X rated power for 5 s | 6 | |
| ΔR Moisture Resistance | ΔR | -1 | 1 | % | 24 hours/cycle, 10 cycles, zero power | 6 | |
| ΔR Biased Humidity | ΔR | -0.5 | 0.5 | % | 10% rated power at 85℃, RH 85%, 1000 hrs, measured 24 hrs after test | 6 | |
| ΔR Load Life | ΔR | -1 | 1 | % | 1000 h at +70 °C, 1.5 h ON, 0.5 h OFF, measured 24 hrs after test | 7 | |
| ΔR Resistance to Soldering Heat | ΔR | -0.5 | 0.5 | % | T=260±5℃ solder, 10±1 sec dwell | 7 | |
| ΔR Mechanical Shock | ΔR | -0.5 | 0.5 | % | 100 g's, 6 ms half sine shock pulse | 7 | |
| ΔR Resistance to Vibration | ΔR | -0.5 | 0.5 | % | 5 g's for 20 min, 12 cycles, 10-2000 Hz | 7 | |
| ΔR Board Flex | ΔR | -0.5 | 0.5 | % | Min 2 mm deflection, 60 sec | 7 | |
| ΔR Thermal Shock | ΔR | -1 | 1 | % | -55°C/+155°C, 1000 cycles | 7 | |
| ΔR ESD Test | ΔR | -1 | 1 | % | Direct contact ±6kV; air discharge +12kV, +16kV, +25kV | 7 |
CAD (KiCad official)
- Symbol:
FRM252WJR001TN - Footprint:
Resistor_SMD:R_2512_6332Metric - 3D model: 2512 (KiCad packages3D, STEP)
- 3D model files:
frm252wjr001tn-etched.step/frm252wjr001tn-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);frm252wjr001tn.step/frm252wjr001tn.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: FOJAN datasheet (12 pp, sha256
13a1c74e6b23cc10, 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, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).
# FRM252WJR001TN
**FOJAN** · Current Sense Resistors / Shunt Resistors · 2512
FRM252WJR001TN 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 | First alloy-resistor electrode (Sn/Ni/Cu plated terminal) of the 2512 chip, 6.4x3.2 mm body, rated 2 W at 70°C and 63 A rated current, with recommended pad a=4.0 mm, b=2.1 mm; the Kelvin voltage-sense point is on the underside of this terminal. |
| 2 | 2 | passive | Second alloy-resistor electrode (Sn/Ni/Cu plated terminal) of the 2512 chip, non-polarized and interchangeable with the first, with 141 A max overload current and -55°C to 170°C operating range; the Kelvin voltage-sense point is on the underside of this terminal. |
## 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 |
|---|---|---|---|---|---|---|---|
| Resistance tolerance (part number code J = ±5%) | | -5 | | 5 | % | | 2 |
| Resistance (nominal, marking R001 = 1 mΩ) | R | | 1 | | mΩ | | 6 |
| Resistance range (2512 standard) | | 1 | | 680 | mΩ | | 5 |
| T.C.R. | TCR | -50 | | 50 | PPM/℃ | | 5 |
| Power Rating | | | | 2 | W | at P70 | 5 |
| Rated Current | | | | 63 | A | | 5 |
| Max overload Current | | | | 141 | A | | 5 |
| Operating Temperature | | -55 | | 170 | °C | | 5 |
| ΔR High Temperature Exposure (Storage) | ΔR | -1 | | 1 | % | T=170℃, 1000 hrs, measured 24 hrs after test | 6 |
| ΔR Low Temperature Exposure (Storage) | ΔR | -0.5 | | 0.5 | % | T=-55ºC, 1000 hours, measured 24 hrs after test | 6 |
| ΔR Temperature Cycling | ΔR | -0.5 | | 0.5 | % | 1000 cycles (-55℃ to 125℃), measured 24 hrs after test | 6 |
| ΔR Short time overload | ΔR | -0.5 | | 0.5 | % | 5 X rated power for 5 s | 6 |
| ΔR Moisture Resistance | ΔR | -1 | | 1 | % | 24 hours/cycle, 10 cycles, zero power | 6 |
| ΔR Biased Humidity | ΔR | -0.5 | | 0.5 | % | 10% rated power at 85℃, RH 85%, 1000 hrs, measured 24 hrs after test | 6 |
| ΔR Load Life | ΔR | -1 | | 1 | % | 1000 h at +70 °C, 1.5 h ON, 0.5 h OFF, measured 24 hrs after test | 7 |
| ΔR Resistance to Soldering Heat | ΔR | -0.5 | | 0.5 | % | T=260±5℃ solder, 10±1 sec dwell | 7 |
| ΔR Mechanical Shock | ΔR | -0.5 | | 0.5 | % | 100 g's, 6 ms half sine shock pulse | 7 |
| ΔR Resistance to Vibration | ΔR | -0.5 | | 0.5 | % | 5 g's for 20 min, 12 cycles, 10-2000 Hz | 7 |
| ΔR Board Flex | ΔR | -0.5 | | 0.5 | % | Min 2 mm deflection, 60 sec | 7 |
| ΔR Thermal Shock | ΔR | -1 | | 1 | % | -55°C/+155°C, 1000 cycles | 7 |
| ΔR ESD Test | ΔR | -1 | | 1 | % | Direct contact ±6kV; air discharge +12kV, +16kV, +25kV | 7 |
## CAD (KiCad official)
- Symbol: `FRM252WJR001TN`
- Footprint: `Resistor_SMD:R_2512_6332Metric`
- 3D model: 2512 (KiCad packages3D, STEP)
- 3D model files: `frm252wjr001tn-etched.step` / `frm252wjr001tn-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `frm252wjr001tn.step` / `frm252wjr001tn.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/8763505090257010688) (12 pp, sha256 `13a1c74e6b23cc10`, 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/frm252wjr001tn-datasheet.pdf)