W5W bulb cross reference is attached as below.

W5W car bulb always also be named as T10 or 501 bulbs. The power of w5w bulb always is 12v 5w.

The base of w5w bulb is also the same as 921 and 912 automotive bulbs, which it’s w2.1 x 9.5d.

W5W bulb cross reference can be supplied for you by glass type and leds.