(3pcs) Matek Micro BEC 6-30V to 5V/9V Adjustable Step-Down Regulator for 4/5 inch 220mm 210mm 250mm 6s Carbon Fiber FPV Racing Quad Frame X Quadcopter Like Martian II 220 QAV250 QAV210 X210

These are really nice BEC's they are tiny and of high quality. I used these to step down battery voltage to power my flight controller as the 4 in 1 ESC that I used for my drone build did not have any 5v bec built into it. This is working perfectly for that use. As always Matek Sys products are of high quality and last a long time.

You found them! These are the perfect tiny 5V BEC. I tried a bunch of different tiny 5V BECs. They all work fine but these are the tiniest. Will comment here if I find smaller ones. In the meantime, these are it!

These adjustable regulators are perfect for powering all sorts of low-voltage devices, not just model aircraft parts. They're great for powering small devices like single-board computers from a wide range of DC inputs.

these are very small but work very nice to step down voltage , using to power caddx vista on a 6s quad, getting power from main vbat step down to 9,1 volts. I like how the three chips are still attached and the matek sealed bag .

Very cheap. Bad pads make this a challenge to solder

I've used several of these across multiple FPV drone builds. They are excellent for stepped down power from VBat for those electronics that need lower (and clean) voltage.

Ran a 3S LiPo through this for 9v stepdown and servo ran great with no load but any time had load of about a pound, the BEC burnt up. Tested with a second unit and ammeter read 1.7A with peak 2.33A for ~1 sec. Only buy this for use in a boat or aileron, don't use for something with actual current draw.

Castellated edges and a second GND pin instead of a nearly useless enable pad. Appears to hit 5v right on the nose too.I think 3.3v/5v switchable would be more generically useful than having 9v, but it seems these are targeted towards idiots with overpowered VTXs so I can't really blame Matek.