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SMF12M1FR040T

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SART Nanjing Sart Tech Current Sense Resistors / Shunt Resistors, 1206. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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SMF12M1FR040T

SART Nanjing Sart Tech · Current Sense Resistors / Shunt Resistors · 1206

SMF12M1FR040T from SART Nanjing Sart Tech, in a 1206. 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 One terminal of the 40 mΩ current-sense element (two-terminal 1206 chip, 3.20 mm x 1.60 mm, terminal length A 0.50±0.20 mm), rated 1.0 W at 70°C.
2 2 passive Second terminal of the 40 mΩ current-sense element, interchangeable with the other terminal (non-polar), operating range -55°C to +170°C.

Key specifications

Parameter Value
Manufacturer SART Nanjing Sart Tech
Package 1206
Category Resistors
Pins 2

Electrical characteristics

Limits from the LCSC catalog entry for this part (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Resistance 40 mΩ nominal, catalog attribute (LCSC C845288) catalog
Tolerance -1 1 % catalog attribute (LCSC C845288) catalog
Rated power 1 W catalog attribute (LCSC C845288) catalog
Temperature coefficient TCR -50 50 ppm/°C catalog description (LCSC C845288) catalog

CAD (KiCad official)

  • Symbol: SMF12M1FR040T
  • Footprint: Resistor_SMD:R_1206_3216Metric
  • 3D model: 1206 (KiCad packages3D, STEP)
  • 3D model files: smf12m1fr040t-etched.step / smf12m1fr040t-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smf12m1fr040t.step / smf12m1fr040t.glb are the bare package body.

Provenance

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

  • Datasheet: SART Nanjing Sart Tech datasheet (7 pp, sha256 8ece06e9735a9059, retrieved 2026-11-01, tier: lcsc)
  • 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