Some, sure, but it would be so distributed you'd have to send the rubble through a refiner at a low-grade gold mine to get any of it out, there would be a great deal more of it from fillings, jewelry, accessories, and eyeglass frames of the victims really, rather than the electronics, so I doubt anybody but the most hardened tax collector or accountant would want to go there.
The primary easily-melted metal in the electronics would be the solder (Mainly tin, some alloyed with lead and some with a very small percentage of silver, which melts around 450-500 degrees; far and away the greatest amount of metal that would melt at the temps involved would be the alloys of aluminum, which melts at 1200 degrees. Pure copper and gold both melt at around 2100-2150 degrees (All in Fahrenheit, by the way), so not all of it would have necessarily melted except in the hottest parts of the fire.