Identifying smd components

[pedefede]

I'm trying to repair the output of a signal generator, but I can't figure out the component names/ID

There's 4 components in question, with the following markings (followed by package format)

L0TB - sot25
A45A - sot25
WV4 - sot23
R1A - sot23

There's a picture of the part of the board containing the 4 components here:

smd.jpg - File Shared from Box - Free Online File Storage

I'm afraid the quality isn't too good, but the markings are as above.


Can anyone identify these for me? I've tried a couple of lists, but I can't seem to find anything that makes sense :-(


Thanks!

 

[Waly]

R1A - MMST3904 (Onsemi) AKA 2N3904
WV4 - BAT54S (double diode, Schottky)
A45A - LM8261 (rail to rail, high output current opamp, National)
L0TB - Not sure, could be LP2985IM5-4.0, a 4V LDO voltage regulator with shutdown (also National).

 

[pedefede]

Thankyou very much, you're the man 🙂