HEXFET N-channel, 100 V, 190 A — D2PAK-7 power switch
It comes in a D2PAK-7 (TO-263-7) surface-mount package with six leads plus the tab, designed for high-current switching in motor drives, DC-DC converters, and battery management systems.
On-resistance and gate drive — sizing the loss budget
At 100 A, dissipation in the channel alone is roughly 39 W before accounting for temperature rise. The 140 nC gate charge at 4.5 V Vgs tells the driver designer how much current is needed to hit the target switching frequency — a 10 A gate driver can charge the gate in about 14 ns, but the PCB layout must keep the gate loop inductance low to avoid ringing.
Temperature range and package — deployment envelope
The D2PAK-7 package's exposed tab must be soldered to a sufficient copper area on the PCB to keep RthJA within the thermal budget at 370 W maximum dissipation. The 7-lead variant adds an extra source sense pin for Kelvin connection, improving switching performance by isolating the power path from the gate-drive return.