The BTS3035EJXUMA1 is a single-channel low-side N-channel power switch from Infineon's HITFET® family, controlled by an On/Off interface with non-inverting input. The switch integrates fixed current limiting, over-temperature shutdown, and over-voltage clamping — the auto-restart feature means the part re-tries after a fault clears, which suits intermittent loads like solenoids or motors that may stall momentarily.
Rds(on) and current rating — sizing the thermal budget
With a typical Rds(on) of 30 mOhm, conduction loss at 5 A is 0.75 W (I²R). The 8-SOIC exposed-pad package dissipates that into the PCB copper; the junction temperature rating of 150°C means the part can handle brief overloads as long as the average stays below the derating curve. Compared to the sibling BTS142DATMA1 (23 mOhm, 4.6 A), the BTS3035EJXUMA1 trades a slightly higher on-resistance for a 0.4 A higher continuous current ceiling — a meaningful delta if the load draws 5 A steady-state.
Package and footprint notes for the board designer
The supply voltage pin (Vbb) does not require an external Vcc; the switch is self-biased from the load supply.