±0.5% current sense — what that means for your BOM
The IR2175STRPBF is a current-sense IC from Infineon, specified at ±0.5% accuracy. That 0.5% is the total error budget across the full signal chain — not just the sense resistor tolerance, but the IC's own offset, gain drift, and nonlinearity combined. For a 10 A motor phase, that's ±50 mA of uncertainty; for a precision servo drive or battery monitor, that figure decides whether you need a second-stage calibration or a trim pot. Output is a linear 20 mA at full-scale. This is a current-output signal — it drives a burden resistor directly into an ADC input, or it can feed a summing node. The 20 mA ceiling means the burden resistor value sets the voltage span: 50 Ω gives 1 V full-scale, 100 Ω gives 2 V.
8-SOIC package — board-fit and reflow
Standard 8-SOIC (0.154" width, 3.90 mm body) — the same footprint as a 74HC08 or an LM358. No exotic land pattern, no via-in-pad requirement. The supplier device package is 8-SOIC, surface-mount only. Reel packaging for production pick-and-place; cut-tape option for prototypes or bridge quantities. The MSL is not in the ledger, but for an 8-SOIC with no exposed pad, it is typically MSL 1 or 2 — no bake before reflow unless the reel has been open for weeks in a humid environment.
Active lifecycle — no last-time-buy pressure
Infineon lists the IR2175STRPBF as Active. ROHS3 compliant — no exemption issues for EU or China RoHS. That means this part is still in the factory's current portfolio; new designs can commit to it without worrying about a sudden discontinuation. The only sourcing risk is the usual semiconductor lead-time fluctuation — confirm current lead time and pricing at RFQ.