I haven't seen any copper ones lately, the closest I saw was Aluminum with a round copper plug in the middle.@jib77
I've seen copper heatsinks..
not painted yellow, real copper
only in 1 motherboard or 2 maybe.
Heatsink Idea ...
I re-purposed a northbridge heatsink from an old mother board. I broke off the "fingers" and then cut them into tiny heatsinks. I have a limited number of these "fingers" if you want one included with the driver. Example use:
That is just a marketing number, it is engineered for way more so it is reliable under normal applications. Adding heatsink allows the part to dissipate more power, its just like our beloved laser diodes.@jib77
It may sound silly but.. isn't the LM1117 1A max? How you did it?