Ultrapurple
X-Rays of 512GB and 1TB microSDXC cards
These images show the internal structure of a no-name 512GB and Sandisk 1TB microSD card. The 1TB card's internal structure is unclear in the main view, although the bond wires are clearly visible; when you look at the side-on view (above) you can see that it actually comprises two stacks of at least 15 incredibly thin silicon dies arranged in a stepwise formation.
The 512GB device also has multi-layer construction, but to a much less extreme level.
The reason for X-Raying the on-edge images from different edges is that the cards have different arrangements. On the 512GB card, the bond wires across the 'top' edge ('pins' end) mean that looking through the length of the device was unproductive. On the other hand, the 1TB card has the majority of its connections on the left side, as viewed, meaning that it was only possible to get a clear view through the long path.
Both devices feature a smaller die on the bottom right corner, presumably a control device of some sort. In the case of the 1TB card, the controller is actually tucked in underneath some of the memory dies.
The X-Ray images were made using a Faxitron cabinet-type X-Ray machine with solid-state sensor. The design completely shields users from any risk of exposure. Please, for the sake of your health and that of those around you, do not attempt to use any sort of unshielded or otherwise unsafe X-Ray equipment. You cannot feel, see, touch or smell X-Rays but they are known to be harmful and the damage is cumulative.
I retain the copyright of this image and all its parts, but will sympathetically consider requests for re-use.
X-Rays of 512GB and 1TB microSDXC cards
These images show the internal structure of a no-name 512GB and Sandisk 1TB microSD card. The 1TB card's internal structure is unclear in the main view, although the bond wires are clearly visible; when you look at the side-on view (above) you can see that it actually comprises two stacks of at least 15 incredibly thin silicon dies arranged in a stepwise formation.
The 512GB device also has multi-layer construction, but to a much less extreme level.
The reason for X-Raying the on-edge images from different edges is that the cards have different arrangements. On the 512GB card, the bond wires across the 'top' edge ('pins' end) mean that looking through the length of the device was unproductive. On the other hand, the 1TB card has the majority of its connections on the left side, as viewed, meaning that it was only possible to get a clear view through the long path.
Both devices feature a smaller die on the bottom right corner, presumably a control device of some sort. In the case of the 1TB card, the controller is actually tucked in underneath some of the memory dies.
The X-Ray images were made using a Faxitron cabinet-type X-Ray machine with solid-state sensor. The design completely shields users from any risk of exposure. Please, for the sake of your health and that of those around you, do not attempt to use any sort of unshielded or otherwise unsafe X-Ray equipment. You cannot feel, see, touch or smell X-Rays but they are known to be harmful and the damage is cumulative.
I retain the copyright of this image and all its parts, but will sympathetically consider requests for re-use.