Can BT909 be used without the breakout board?

I see there are a couple extra smt components on the breakout board, so I was wondering if it’s necessary or not? The Bob adds considerable extra thickness and size that I’d like to not have, if possible.

Edit: looks like two inductors and two caps.

I’ve wired up BT630 raw. Just tiny pins, but works fine.
Not sure what the stuff on the BOB are for.

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You might need some extra capacitor between 3.3v and GND, but other than that, I don’t think you need any breakout boards.

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