component
FPM253WJR003TM
Public Made by Adomby adom
FOJAN Current Sense Resistors / Shunt Resistors, 2512. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownFPM253WJR003TM
FOJAN · Current Sense Resistors / Shunt Resistors · 2512
FPM253WJR003TM 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 of the 3 mΩ (R003) alloy current-sense resistor, rated 3 W at 70 °C and 38 A rated current (86 A max overload) for the 2512 type. |
| 2 | 2 | passive | Second terminal of the 3 mΩ (R003) alloy current-sense resistor, with Kelvin four-terminal sensing points on the underside of this electrode (A and V pads) at 5.6±0.25 mm by 2.0±0.25 mm spacing. |
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 (J code = ±5%) | -5 | 5 | % | Part-number tolerance code J; Kelvin four-terminal measurement | 2 | ||
| Temperature coefficient of resistance (T.C.R.) | TCR | -50 | 50 | ppm/°C | Measured at 25°C and +125°C, reference +25°C | 4 | |
| Resistance range, Type 2512 | R | 1 | 100 | mΩ | Type 2512 (not 2512-L) | 4 | |
| Rated power | P70 | 3 | W | Power rating at P70 | 4 | ||
| Rated current, Type 2512 | 38 | A | Type 2512 | 4 | |||
| Max overload current, Type 2512 | 86 | A | Type 2512 | 4 | |||
| Operating temperature range | -55 | 170 | °C | Type 2512 | 4 | ||
| Dielectric withstanding voltage | 500 | V DC | Listed in features | 2 | |||
| High temperature exposure (storage) ΔR | ΔR | -1 | 1 | % | T=170°C, 1000 hrs; measured 24 h after test | 5 | |
| Low temperature exposure (storage) ΔR | ΔR | -0.5 | 0.5 | % | T=-55°C, 1000 hrs; measured 24 h after test | 5 | |
| Temperature cycling ΔR | ΔR | -0.5 | 0.5 | % | 1000 cycles (-55°C to 125°C); measured 24 h after test | 5 | |
| Short time overload ΔR | ΔR | -0.5 | 0.5 | % | 5 x rated power for 5 s | 5 | |
| Moisture resistance ΔR | ΔR | -1 | 1 | % | 24 hours per cycle, 10 cycles | 5 | |
| Biased humidity ΔR | ΔR | -0.5 | 0.5 | % | 10% rated power at 85°C, RH 85%, 1000 hrs; measured 24 h after test | 6 | |
| Load life ΔR | ΔR | -1 | 1 | % | 1000 h at +70°C, 1.5 h ON / 0.5 h OFF; measured 24 h after test | 6 | |
| Resistance to soldering heat ΔR | ΔR | -0.5 | 0.5 | % | T=260±5°C solder, 10±1 s dwell | 6 | |
| Mechanical shock ΔR | ΔR | -0.5 | 0.5 | % | 100 g's, 6 ms half sine pulse | 6 | |
| Resistance to vibration ΔR | ΔR | -0.5 | 0.5 | % | 5 g's for 20 min, 10-2000 Hz, 12 cycles each axis | 6 | |
| Board flex ΔR | ΔR | -0.5 | 0.5 | % | Min 2 mm deflection, 60 s | 6 | |
| Thermal shock ΔR | ΔR | -1 | 1 | % | -55°C/+155°C, 1000 cycles | 6 | |
| ESD ΔR | ΔR | -1 | 1 | % | Direct contact ±6 kV; air discharge +12/+16/+25 kV | 6 |
CAD (KiCad official)
- Symbol:
FPM253WJR003TM - Footprint:
Resistor_SMD:R_2512_6332Metric - 3D model: 2512 (KiCad packages3D, STEP)
- 3D model files:
fpm253wjr003tm-etched.step/fpm253wjr003tm-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);fpm253wjr003tm.step/fpm253wjr003tm.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: FOJAN datasheet (11 pp, sha256
20558dfb235c52df, 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).