Trying to identify a component

Thread Starter


Joined Jan 17, 2007
I've tried googling it already, but didn't get any useful results.

It looks like a regulator to me, alright. The component is part of a wireless module, and I'm almost sure it's a regulator in charge of converting 5VDC input to 3.3VDC output. I'm not familiar with its logo. Any ideas?



Joined Apr 2, 2020
Looks like a D-PAK package - otherwise known as TO-252-2. Or PG-TO-252-2.

the -2 means two leads plus the heat sink. Normally, it is a -3 where the center pin is bonded to the heat sink.
Common for
BJT, Mosfets, SRC, Triacs, Voltage regulators, even single diodes. Diode pairs (common anode or common cathode)

Thread Starter


Joined Jan 17, 2007
Thanks all for your guesses. My real question is, how much input voltage can a regulator such as that one withstand? .. it seems to be 25V tops ... OTH, is it an adjustable regulator?, would changing the input voltage change its output?


Joined Oct 7, 2019
Because we don't know exactly which regulator I can not say what the max input voltage is. A "LDO" type has a very low max voltage.
I like the idea of the part being a LM1084 but the package marking is wrong for LM1084. The BM1084 data sheet does not show package marking. All the 1084s I have seen have a number like 1084-3.3 or -5.0 or -adj to indicate which output voltage. Because of the two resistors I think it is a -adj of some type.


Joined May 13, 2022