CRE2512-FZ-R001E-3

Bourns CRE2512-FZ-R001E-3: Metal strip current sense resistor 1 mOhm +/-1 %, 3 W, +/-50 ppm/C, AEC-Q200, 2512. A two-terminal metal strip (Mn/Cu alloy) chip resistor from Bourns' CRE2512 series, made for measuring large currents: power supplies, motor and stepper drives, battery packs.

Key specifications

All page numbers refer to the datasheet PDF in docs/.

Current, power and voltage

Bourns gives the maximum working current as (P / R)^1/2 (p.1): with P = 3 W and R = 1 mOhm that is 54.8 A at an ambient up to 70 C, falling to zero at 170 C along the derating curve (p.2). At 54.8 A the voltage across the part is 54.8 mV. Power is I^2 x R: 10 A dissipates 0.1 W, 30 A 0.9 W, 50 A 2.5 W. The 1 % tolerance and the +/-50 ppm/C temperature coefficient set the measurement error; the inductance (under 5 nH) and thermal EMF (under 3 uV/C) are small enough for switching-current sensing. How much of the rating a design can use depends on the copper and airflow around the part.

Ordering

Stock figures are a snapshot from the Adom parts search on 2026-10-21; check the distributor before ordering. JLCPCB lists C840615 as an extended part. Ordering code: CRE 2512 - F (1 %) Z (+/-50 ppm/C) - R001 (1 mOhm) E (4000 per 7 inch reel)

• 3 (3 W); the -2 suffix is the 2 W version (p.2).

Manufacturer and resources

Pins

A resistor has no polarity: either terminal may face either way. For accurate sensing take the two sense traces from the inner edge of each pad, as Bourns' pad layout drawing shows (next section).

Land pattern: Bourns layout, not KiCad's generic 2512

Land pattern

The footprint uses Bourns' recommended pads, 3.1 x 4.0 mm with a 1.3 mm gap, because KiCad's IPC 2512 pads (1.225 x 3.35 mm, 4.7 mm gap) would leave most of each 2 mm terminal off the copper. The guide lays both over the part at true scale and explains where the sense traces leave the pads. The comparison, with the numbers

Marking

Bourns prints the value code R001 on the overcoat of CRE2512-R001 ~ R004 parts, reading across the short axis (p.1, Typical Part Marking). The marked model shows it there.

3D model

No Bourns STEP for this part could be downloaded by plain HTTP: bourns.com refuses non-browser requests (HTTP 403) and the datasheet links no CAD file. KiCad's library model R_2512_6332Metric.step was checked first and does not fit this part: it is 0.60 mm thick with 0.54 mm terminals, while the CRE2512-R001 drawing gives T 0.90 +/-0.20 mm and C 2.00 +/-0.20 mm (check). The model on this page is therefore built from the datasheet by provenance/tools/make_step.py: a 6.40 x 3.20 x 0.90 mm part with 2.00 mm Ni/Sn terminations wrapping each end, the Mn/Cu plate between them and a black overcoat on top and bottom. Every printed dimension is used as printed; the overcoat thickness (0.15 mm) and the underside overcoat are not dimensioned by Bourns and are read from the p.2 side view. A display copy CRE2512-FZ-R001E-3-marked.step adds the marking R001 as its own solid group 5 um above the overcoat; the unmarked STEP is the board CAD file.

The page viewer shows cre2512-fz-r001e-3-hero.glb: the clean model plus nonphysical reference artwork drawn under it to the adom-hero standard (adom/component-hero): the footprint's pads as teal dashed outlines at 50 % opacity, its silkscreen at 70 % transparency and the pad numbers 1 and 2 (the terminals have no names). The part is non-polar, so no pin-1 dot is added. The artwork never goes into the STEP, package-reference.glb or the board LODs.

Model checked against the datasheet

The model was rendered in orthographic top, bottom, side and end views at true scale and laid over a drawing made at the same scale from the printed table (nominal outline, tolerance limits, allowed terminal band). Every dimension is inside the printed range: L 6.400 mm (datasheet 6.20 to 6.60), W 3.200 mm (datasheet 3.00 to 3.40), T/H 0.900 mm (datasheet 0.70 to 1.10), C (terminal, top) 2.000 mm (datasheet 1.80 to 2.20), C (terminal, bottom) 2.000 mm (datasheet 1.80 to 2.20). The model is Z-up, seated on z = 0, centred on the footprint origin, long axis on X.

Source: Bourns CRE2512 High Power Current Sense Chip Resistor datasheet, REV. 06/25, p.2 Product Dimensions, CRE2512-R001 ~ R004: A 6.40 +/-0.20, B 3.2 +/-0.20, C 2.00 +/-0.20, T 0.90 +/-0.20 (mm).

Board levels of detail

Clean board-use GLBs (no footprint pads, outlines, labels or silkscreen) in four levels, all in the same Z-up, metre, footprint-origin pose as the STEP. The marking R001 shows in high and medium and is left out of low and super-low. Previews are rendered from each GLB.

CAD files

Datasheet figures

The pages this record cites, cropped from the PDF:

Sources and license

• Bourns: Bourns CRE2512 High Power Current Sense Chip Resistor datasheet, REV. 06/25 (https://www.bourns.com/docs/product-datasheets/cre.pdf)
• KiCad libraries (comparison only): Resistor_SMD.pretty/R_2512_6332Metric.kicad_mod, Resistor_SMD.3dshapes/R_2512_6332Metric.step
• Distributor numbers: Mouser, DigiKey and JLCPCB/LCSC through the Adom parts search, 2026-10-21

Original Adom content, including the datasheet-built models and the footprint, is CC-BY-4.0. The KiCad reference files keep their upstream license and the PDF remains Bourns' document; see LICENSE. provenance.json records every source and file hash; the scripts that built the files and checks are in provenance/tools/.

This is a catalog record for the part, not a manufacturing approval: check Bourns' current datasheet for your design.