Good morning/afternoon/night to everybody.
I have been asked to repair an LG L65 which had a shattered front glass (whose replacement was easy and super cheap). This phone had, however, also developed an intermittent fault with the camera LED flash. Upon disassembly I noticed that the LED would light up only if a very small pressure was applied to it, classic symptom of a damaged solder joint or more likely a broken bond wire. In fact, as soon as I tried to wiggle the package to check, the entire phosphor-loaded epoxy dome came fairly cleanly off.
Does anyone recognize this kind of package? On the top there are, for size comparison, what I believe are 0201 resistor footprints. The package is probably 2x3mm (I don't have a digital caliper) and roughly a couple of mm tall as well (much taller than the typical SMD LED packages).
I am a bit puzzled about the black square that can be seen in the package; I don't understand whether it is an integrated driver or something else (I can only see one bond pad on top of it, which combined with the back side maybe contacting the metallic substrate are still not enough for it to be a transistor, unless I am missing more connections on the other side).
If anyone knows what kind of package this is, or maybe the correct part number, please let me know.
The LED was a typical smartphone camera flash, probably 0.5W or more and >6000K (fairly cool white).