160 mOhm PROFET high-side switch for 12V/24V loads
The Infineon BTS409L1E3062ABUMA1 is a single-channel N-channel high-side power switch from the PROFET series, designed to drive resistive, inductive, and lamp loads on 12V and 24V automotive and industrial power buses. With a typical Rds(on) of 160 mOhm and a maximum continuous output current of 1.8 A, it suits solenoid valves, relays, incandescent bulbs, and small DC motors where conduction loss and thermal rise must stay within the D²Pak package's dissipation capability.
Integrated fault protection reduces external BOM
The switch integrates fixed current limiting, open-load detection, overtemperature shutdown, overvoltage clamping, and undervoltage lockout (UVLO), eliminating the need for discrete protection components on each output channel. The Auto Restart feature means the device attempts to re-enable after a fault condition clears, which is useful for transient overloads but requires the system designer to account for repeated fault cycling in the thermal budget.
NRND — sourcing reality for this PROFET
It remains available for existing production runs through independent distribution, but new BOM insertions should evaluate the current-generation PROFET portfolio for a drop-in or near-drop-in replacement.