8 mOhm Rds(on) — the conduction-loss anchor for a 12V/24V rail
The BTS50081EKBXUMA1 is a single-channel PROFET® high-side switch with a typical on-resistance of 8 mOhm. The exposed-pad PG-DSO-14-47-EP package sinks heat into a board copper plane.
Load voltage range and fault coverage
The load supply accepts 5 V to 28 V. The part integrates open-load detect, over-temperature shutdown, and over-voltage clamping.
Temperature grade and package — where this switch lives
Junction temperature rating spans -40°C to 150°C, which qualifies it for underhood automotive and industrial cabinet environments.
For a new design, this part is a safe selection without a mandatory obsolescence review.
How it compares to the BTS142DATMA1
The closest functional sibling in the Infineon portfolio is the BTS142DATMA1, a HITFET® low-side switch with a typical Rds(on) of 23 mOhm. The BTS50081 is a high-side switch with an 8 mOhm Rds(on) — roughly one-third the on-resistance — and a lower maximum load voltage (28 V vs. 42 V). If your design requires high-side switching (load between switch and ground) and you need the lowest conduction loss, the BTS50081 is the better fit. If you need low-side switching (load between supply and switch) or a higher voltage rail, the BTS142DATMA1 is the alternative.