the heat sink is
1" wide (same as the PCB),
1 9/16" long
1/2" tall
there is a slight gap between the heatsink and the PCB (thickness of chips) about 1/32" of an inch.

the PCB (without the USB port)
1" wide
3 1/8" long
1/16" tall

the USB port is
5/8" long
and usb port sized for length and width