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FRM253WJR005TM
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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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FRM253WJR005TM
FOJAN · Current Sense Resistors / Shunt Resistors · 2512
FRM253WJR005TM 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 terminal (electrode) of the 5 mΩ alloy current-sense resistor, 2512 size, 63 A rated current and 141 A max overload for the 2512 type. |
| 2 | 2 | passive | Second terminal (electrode) of the resistor, interchangeable with the first, with Kelvin four-terminal resistance measured at the bottom of the product and an operating temperature of -55°C to 170°C. |
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 | % | Part-number tolerance code J = ±5% | 2 | ||
| Temperature coefficient of resistance | TCR | -50 | 50 | ppm/°C | Measuring points 25°C and +125°C, reference point +25°C | 5 | |
| Resistance range (type 2512) | R | 1 | 680 | mΩ | Type 2512 standard part; 2512-L range (0.5-4 mΩ) not applicable | 5 | |
| Operating temperature range | -55 | 170 | °C | Operating temperature range, all types | 5 | ||
| Storage humidity | 30 | 70 | %RH | Storage/carry conditions | 11 | ||
| High temperature exposure ΔR | △R | -1 | 1 | % | T=170℃, 1000 hrs, measured 24 hrs after test conclusion | 6 | |
| Low temperature exposure ΔR | △R | -0.5 | 0.5 | % | T=-55℃, 1000 hrs, measured 24 hrs after test conclusion | 6 | |
| Temperature cycling ΔR | △R | -0.5 | 0.5 | % | 1000 cycles (-55℃ to 125℃), measured 24 hrs after test conclusion | 6 | |
| Short time overload ΔR | △R | -0.5 | 0.5 | % | 5 X rated power for 5 s | 6 | |
| Moisture resistance ΔR | △R | -1 | 1 | % | 24 hours per cycle, 10 cycles, zero power | 6 | |
| Biased humidity ΔR | △R | -0.5 | 0.5 | % | 10% rated power at 85℃, RH 85%, 1000 hrs, measured 24 hrs after test | 6 | |
| Load life ΔR | △R | -1 | 1 | % | 1000 h at +70 °C, 1.5 h ON / 0.5 h OFF, measured 24 hrs after test | 7 | |
| Resistance to soldering heat ΔR | △R | -0.5 | 0.5 | % | 260±5℃ solder, 10±1 sec dwell | 7 | |
| Mechanical shock ΔR | △R | -0.5 | 0.5 | % | 100 g's, half sine, 6 ms, 3 shocks in each of 6 directions | 7 | |
| Resistance to vibration ΔR | △R | -0.5 | 0.5 | % | 5 g's, 20 min per cycle, 10-2000 Hz, 12 cycles in X, Y, Z | 7 | |
| Board flex ΔR | △R | -0.5 | 0.5 | % | Min 2 mm deflection, 60 sec | 7 | |
| Thermal shock ΔR | △R | -1 | 1 | % | -55°C/+155°C, 1000 cycles, 15 min dwell, transfer time max 20 s | 7 | |
| ESD ΔR | △R | -1 | 1 | % | Direct contact ±6 kV; air discharge +12/+16/+25 kV | 7 | |
| Resistance nominal value (part code R005) | R | 5 | mΩ | Part-number code R005 = 5mΩ; Kelvin four-terminal measurement at bottom test point | 2 | ||
| Rated power at P70 | P70 | 2 | W | Type 2512 (standard), power rating at P70 | 5 | ||
| Rated current | 63 | A | Type 2512 (standard); printed without min/max designation | 5 | |||
| Max overload current | 141 | A | Type 2512 (standard); printed without min/max designation | 5 | |||
| Dielectric withstanding voltage | 500 | V DC | Listed under features; printed as 500V DC withstanding voltage | 2 |
CAD (KiCad official)
- Symbol:
FRM253WJR005TM - Footprint:
Resistor_SMD:R_2512_6332Metric - 3D model: 2512 (KiCad packages3D, STEP)
- 3D model files:
frm253wjr005tm-etched.step/frm253wjr005tm-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);frm253wjr005tm.step/frm253wjr005tm.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).
# FRM253WJR005TM
**FOJAN** · Current Sense Resistors / Shunt Resistors · 2512
FRM253WJR005TM 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 terminal (electrode) of the 5 mΩ alloy current-sense resistor, 2512 size, 63 A rated current and 141 A max overload for the 2512 type. |
| 2 | 2 | passive | Second terminal (electrode) of the resistor, interchangeable with the first, with Kelvin four-terminal resistance measured at the bottom of the product and an operating temperature of -55°C to 170°C. |
## 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 | % | Part-number tolerance code J = ±5% | 2 |
| Temperature coefficient of resistance | TCR | -50 | | 50 | ppm/°C | Measuring points 25°C and +125°C, reference point +25°C | 5 |
| Resistance range (type 2512) | R | 1 | | 680 | mΩ | Type 2512 standard part; 2512-L range (0.5-4 mΩ) not applicable | 5 |
| Operating temperature range | | -55 | | 170 | °C | Operating temperature range, all types | 5 |
| Storage humidity | | 30 | | 70 | %RH | Storage/carry conditions | 11 |
| High temperature exposure ΔR | △R | -1 | | 1 | % | T=170℃, 1000 hrs, measured 24 hrs after test conclusion | 6 |
| Low temperature exposure ΔR | △R | -0.5 | | 0.5 | % | T=-55℃, 1000 hrs, measured 24 hrs after test conclusion | 6 |
| Temperature cycling ΔR | △R | -0.5 | | 0.5 | % | 1000 cycles (-55℃ to 125℃), measured 24 hrs after test conclusion | 6 |
| Short time overload ΔR | △R | -0.5 | | 0.5 | % | 5 X rated power for 5 s | 6 |
| Moisture resistance ΔR | △R | -1 | | 1 | % | 24 hours per cycle, 10 cycles, zero power | 6 |
| Biased humidity ΔR | △R | -0.5 | | 0.5 | % | 10% rated power at 85℃, RH 85%, 1000 hrs, measured 24 hrs after test | 6 |
| Load life ΔR | △R | -1 | | 1 | % | 1000 h at +70 °C, 1.5 h ON / 0.5 h OFF, measured 24 hrs after test | 7 |
| Resistance to soldering heat ΔR | △R | -0.5 | | 0.5 | % | 260±5℃ solder, 10±1 sec dwell | 7 |
| Mechanical shock ΔR | △R | -0.5 | | 0.5 | % | 100 g's, half sine, 6 ms, 3 shocks in each of 6 directions | 7 |
| Resistance to vibration ΔR | △R | -0.5 | | 0.5 | % | 5 g's, 20 min per cycle, 10-2000 Hz, 12 cycles in X, Y, Z | 7 |
| Board flex ΔR | △R | -0.5 | | 0.5 | % | Min 2 mm deflection, 60 sec | 7 |
| Thermal shock ΔR | △R | -1 | | 1 | % | -55°C/+155°C, 1000 cycles, 15 min dwell, transfer time max 20 s | 7 |
| ESD ΔR | △R | -1 | | 1 | % | Direct contact ±6 kV; air discharge +12/+16/+25 kV | 7 |
| Resistance nominal value (part code R005) | R | | 5 | | mΩ | Part-number code R005 = 5mΩ; Kelvin four-terminal measurement at bottom test point | 2 |
| Rated power at P70 | P70 | | 2 | | W | Type 2512 (standard), power rating at P70 | 5 |
| Rated current | | | 63 | | A | Type 2512 (standard); printed without min/max designation | 5 |
| Max overload current | | | 141 | | A | Type 2512 (standard); printed without min/max designation | 5 |
| Dielectric withstanding voltage | | | 500 | | V DC | Listed under features; printed as 500V DC withstanding voltage | 2 |
## CAD (KiCad official)
- Symbol: `FRM253WJR005TM`
- Footprint: `Resistor_SMD:R_2512_6332Metric`
- 3D model: 2512 (KiCad packages3D, STEP)
- 3D model files: `frm253wjr005tm-etched.step` / `frm253wjr005tm-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `frm253wjr005tm.step` / `frm253wjr005tm.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [FOJAN datasheet](docs/frm253wjr005tm-datasheet.pdf) (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/frm253wjr005tm-datasheet.pdf)