Active production — single-source device
Infineon BTS4141NHUMA1 is an active-production high-side power switch in the PROFET family, rated for continuous output current up to 700 mA with a typical on-resistance of 150 mOhm. The load voltage range spans 12 V to 45 V, suiting it for 12 V and 24 V automotive or industrial battery-rail switching without needing an external supply for the gate drive — Vcc/Vdd is not required.
The junction-to-ambient thermal resistance of the SOT223-4 package keeps that within the -40 °C to 125 °C operating range without a heatsink for most environments. The auto-restart feature means after an over-temperature fault clears, the output re-enables automatically — useful for driving lamps or actuators where a momentary overload is expected and the load must recover without a system reset.
Supplied in PG-SOT223-4 (TO-261-4 equivalent), a surface-mount package with a large ground tab that conducts heat to the PCB copper plane. The package footprint is standard for 1 A-class power switches.
ROHS3 compliant per Infineon's current declaration — no RoHS exemption beyond the standard lead-free and halogen-free requirements.