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MSR12A1R004F2

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

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MSR12A1R004F2

prosemi · Current Sense Resistors / Shunt Resistors · 1206

MSR12A1R004F2 from prosemi, 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 First terminal of the 2-terminal 4 mΩ (R004) ±1% metal alloy chip resistor, rated 1 W at 70°C, with current rating (P/R)^1/2 and operation from -55°C to +150°C.
2 2 passive Second terminal of the 2-terminal 4 mΩ (R004) ±1% metal alloy chip resistor, rated 1 W at 70°C, with a recommended solder pad width of 1.00 mm (a), 1.85 mm (b) and 1.84 mm (c).

Key specifications

Parameter Value
Manufacturer prosemi
Package 1206
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 F) -1 1 % Code F = ±1% per part-numbering table 1
Temperature coefficient of resistance TCR -75 75 ppm/℃ MSR12A, resistance range 1.5~4 mΩ; measured per MIL-STD-202 Method 304 (room temp to 125℃) 1
Operation temperature range -55 150 ℃ Operation temperature range 1
Rated power P 1 W Power rating at 70℃ (MSR12A); derate above 70℃ per curve 1
Nominal resistance R 4 mΩ Part-number resistance code R004; range 1.5~4 mΩ for MSR12A 1
Short time overload resistance change ΔR -1 1 % 5 s overload at 4× rated power (1.5≤R≤10 mΩ) 5
Resistance to soldering heat resistance change ΔR -0.5 0.5 % 260℃±5℃, 12 s ±0.5 s 5
Temperature cycling resistance change ΔR -1 1 % -55℃ (15 min)/+150℃ (15 min), 300 cycles 5
Low temperature storage resistance change ΔR -1 1 % -55℃ for 1000 hours, no power 5
High temperature storage resistance change ΔR -1 1 % 150℃ for 1000 hours, no power 5
Bias humidity resistance change ΔR -1 1 % +85℃, 85% RH, 10% bias, 1000 hours; applies to 1.5~10 mΩ 5
Vibration resistance change ΔR -0.5 0.5 % 5 g's for 20 minutes, 12 cycles each of 3 orientations, 10 Hz-2000 Hz 5
Operational life resistance change ΔR -1 1 % 70℃±2℃, 1000 hours, rated power 1.5 h ON / 0.5 h OFF; applies to 1.5~9 mΩ 5
Moisture resistance resistance change ΔR -0.5 0.5 % MIL-STD-202 Method 106, no power, 7b not required 5
Reflow peak temperature TP 260 ℃ Pb-free reflow; time within 5℃ of peak 20-40 s 4
Hand soldering temperature 350 ℃ Hand soldering, 5 seconds max. 4
Storage temperature 40 ℃ Storage, must be controlled less than 40℃ 7
Storage relative humidity R.H. 75 % Storage, must be controlled less than 75% 7

CAD (KiCad official)

  • Symbol: MSR12A1R004F2
  • Footprint: Resistor_SMD:R_1206_3216Metric
  • 3D model: 1206 (KiCad packages3D, STEP)
  • 3D model files: msr12a1r004f2-etched.step / msr12a1r004f2-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); msr12a1r004f2.step / msr12a1r004f2.glb are the bare package body.

Provenance

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

  • Datasheet: prosemi datasheet (7 pp, sha256 216066e52aa868f6, retrieved 2026-11-07, 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