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Andrew Zonenberg

Doing a full chip bottom side substrate scan of the XCKU5P-2FFVB676I on the Labsmore X1.

I don't have a proper darkfield setup but find that pure metallurgical brightfield illumination works poorly on chip packages and PCBs. Here's the low angle LED lamp setup I'm experimenting with.

Hard to get good uniformity on larger samples but it works decently.

FPGA on microscope stage, short exposure
Same image with longer exposure showing LED lights shining on the stage
Jan 05, 2024, 12:43 AM·Public·Mastodon for Android
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