Objective Development Forums

Somebody has tried some of those USB Transient Supressors?
I found those: NUF2221W1T2 and SN75240. The first one seems to be fine, but i don't know if they work.
The problem is that I can't find smd 3.6V zeners here in Uruguay (belive me is not a nice place to make electronics proyects), i just find 1W trougth hole, so after a search in ebay i've found those nice sot-wathever smd ic's.
I think they add extra protection to the usb pc-side.

(Please excuse me, my english is not good)
Regards.
Diego Bouvier

Don't know whether they would work. You need to clamp the voltage at ca. 3.3 V.

If you can't get zeners, you could try to reach the same limit with LEDs in forward direction.