http://www.ebay.com/itm/RF-Broadban...690380?hash=item4b08b5f7cc:g:WFYAAOSwUKxYa5st
http://www.ebay.com/itm/RF-Broadban...690380?hash=item4b08b5f7cc:g:WFYAAOSwUKxYa5st
See the second higher power transistor on this device. Is that an op-amp? I am confused how this thing is able to put out 2W from an op-amp because all the ones I've seen are only a few hundred milliwatt at most.

If it is not an op-amp, it seems odd to me how it has so little matching components on it.

Can anyone give me the identity of this transistor?

 

An op amp is not a transistor. Is made of transistors.
I cannot read the part number, however, you can see the heatsink on the back side, which is needed for power dissipation.

 

They will be Fets not opamps..

 

The bottom device is a 78L05, a 5V regulator, which supplies bias to the top right device which is probably an NPN transistor judging by the collector and base bias supplied. The top left device confuses me though as there is no obvious DC path to its left hand connection. It could be a MMIC.

 

Thanks for the input, but I kind of shared the wrong link.

http://www.ebay.com/itm/1PC-85-115M...06ef6e4&pid=100005&rk=3&rkt=6&sd=201770235244
It has 1W of output, so it can't be an MMIC, right? I don't understand how the bias works though because I don't see any power going into the input of the amp (could it be that component between the two pins of the amp?)

 

It has 1W of output, so it can't be an MMIC, right? I don't understand how the bias works though because I don't see any power going into the input of the amp (could it be that component between the two pins of the amp?)

It could be a MMIC, but I suspect it is a transistor. The resistor across the pins is supplying some bias from the output (collector?) to the input (base?).