1A output, 150°C junction — the fan-driver BOM anchor
The BD6961F-E2: The BD6961F-: The ROHM BD6961F- is a fully integrated motor driver that combines control logic and power MOSFETs in a single 8-SOP package. It drives brushless DC (BLDC) fans or brushed DC motors directly, accepting a PWM input and delivering up to 1A continuous output from a 3.3V to 14V supply rail. The 1A output current is the headline spec — it determines whether this part can spin the fan without an external driver stage. For a typical 12V box fan pulling 0.5A to 0.8A, the 1A rating leaves headroom for startup inrush without hitting the current limit.
Two half-bridges, one PWM input
The output stage is configured as two half-bridges, which is the standard topology for driving a single-phase BLDC motor or a brushed DC motor with a single PWM signal. The integrated Power MOSFET technology eliminates external FETs and their gate-drive circuitry. The junction temperature rating of -40°C to 150°C covers the full industrial and automotive under-hood ambient range. In a fan motor mounted inside a power supply or an engine bay, the 150°C ceiling gives thermal margin that the 105°C-rated BD6968FVM-TR does not offer.
The BD6961F- carries an active lifecycle status. ROHS3 compliant per the listing. Sourced through independent distribution channels.
8-SOP footprint — what the package means for layout
The 8-SOP package (0.173-inch body width, 4.40mm) is a standard surface-mount outline. The 1A output current requires a reasonable copper pour on the PCB to dissipate heat from the junction to the ambient — the datasheet's thermal resistance figures should be consulted for the specific board copper area.