This may be off-topic, so I apologize in advance. However, I am sure there are folks here who can answer my question or point me in the right direction.
I am making a board (111mm x 146mm, 4 layer) with a PZT3906 transistor. It has a heat sink pin and I am uncertain as to how much copper I have to put around that pin so it has adequate heat dissipation. The datasheet says I need the following for a maximum of 1 watt heat dissipation:
PCB size: FR-4, 76 mm x 114 mm x 1.57 mm (3.0 inch x 4.5 inch x 0.062 inch) with minimum land pattern size.
but I don’t understand what that means. Can someone decipher it for me?