component
MSR12A1R003F2
Public Made by Adomby adom
prosemi Current Sense Resistors / Shunt Resistors, 1206. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
MSR12A1R003F2
prosemi · Current Sense Resistors / Shunt Resistors · 1206
MSR12A1R003F2 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 | Resistor terminal 1 of the 2-terminal MSR12A (1206, 3.20 x 1.60 mm) 3 mΩ ±1% element, 1 W at 70°C, TCR ±75 ppm/°C, recommended solder pad a=1.00 mm, b=1.85 mm, c=1.84 mm. |
| 2 | 2 | passive | Resistor terminal 2 of the 2-terminal MSR12A (1206) 3 mΩ element, interchangeable with terminal 1, rated -55°C to +150°C, with a sensing trace routed to each pad per the recommended layout. |
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 (code F) | -1 | 1 | % | Part number code F = ±1% | 1 | ||
| Temperature coefficient of resistance (TCR) | TCR | -75 | 75 | ppm/℃ | MSR12A; TCR=(R-R0)/R0(T2-T1)×10^6, T1 room temp, T2 125℃ | 1 | |
| Power rating | P | 1 | W | Power rating at 70℃ (MSR12A, code 1 = 1W); derate above 70℃ per curve | 1 | ||
| Operation temperature range | -55 | 150 | ℃ | MSR series operation temperature range | 1 | ||
| Resistance range | R | 1.5 | 4 | mΩ | MSR12A resistance range; this MPN R003 = 3 mΩ falls within it | 1 | |
| Resistance change, short time overload | ΔR | -1 | 1 | % | 5 s overload at 4 times rated power; 1206, 1.5≤R≤10 mΩ | 5 | |
| Resistance change, resistance to soldering heat | ΔR | -0.5 | 0.5 | % | 260±5℃, 12±0.5 s | 5 | |
| Resistance change, temperature cycling | ΔR | -1 | 1 | % | -55℃ (15 min)/+150℃ (15 min), 300 cycles | 5 | |
| Resistance change, low temperature storage | ΔR | -1 | 1 | % | -55℃, 1000 hours, no power | 5 | |
| Resistance change, high temperature storage | ΔR | -1 | 1 | % | 150℃, 1000 hours, no power | 5 | |
| Resistance change, bias humidity | ΔR | -1 | 1 | % | +85℃, 85% RH, 10% bias, 1000 hours; 1.5~10 mΩ | 5 | |
| Resistance change, vibration | ΔR | -0.5 | 0.5 | % | 5 g's, 20 min, 12 cycles each of 3 orientations, 10-2000 Hz | 5 | |
| Resistance change, operational life | ΔR | -1 | 1 | % | 70℃±2℃, 1000 hours, rated power 1.5 h ON / 0.5 h OFF; 1206, 1.5~9 mΩ | 5 | |
| Resistance change, moisture resistance | ΔR | -0.5 | 0.5 | % | MIL-STD-202 method 106, no power | 5 | |
| Nominal resistance | R | 3 | mΩ | Resistance code R003 = 3 mΩ (decimal location in ohms: R003 = 0.003 Ω) | 3 |
CAD (KiCad official)
- Symbol:
MSR12A1R003F2 - Footprint:
Resistor_SMD:R_1206_3216Metric - 3D model: 1206 (KiCad packages3D, STEP)
- 3D model files:
msr12a1r003f2-etched.step/msr12a1r003f2-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);msr12a1r003f2.step/msr12a1r003f2.glbare 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, 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).