Defective Chip Image with New Rail

Images taken in a controlled environment or with a posed subject. All subject types.

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mawyatt
Posts: 2497
Joined: Thu Aug 22, 2013 6:54 pm
Location: Clearwater, Florida

Defective Chip Image with New Rail

Post by mawyatt »

Here's a old defective test chip (note the solder ball gouges) with a modified THK KR20 rail (thanks Peter) and a Vivitar Komine 135mm @ f4 (thanks Lou) and Mitutoyo 5X. I run the THK rail from Zerene with a Stackshot controller (made a special adapter cable). For starters this was 98 steps at 25 micron steps, stacked with Zerene.

Best,

Mike

Image

Olympusman
Posts: 5090
Joined: Sun Jan 15, 2012 12:31 pm

Chip

Post by Olympusman »

I really love your oblique images of chips.

Mike
Michael Reese Much FRMS EMS Bethlehem, Pennsylvania, USA

mawyatt
Posts: 2497
Joined: Thu Aug 22, 2013 6:54 pm
Location: Clearwater, Florida

Post by mawyatt »

Thanks Mike.

Wish there was a way to show a higher res image, they look much better at 5~10MB JPEGs.

Doesn't show well at this resolution, but if you look closely (left of center) you can see the gouged solder balls (~100um dia), result of an over zealous technician and thus a defective chip!!

Best,

Mike

mawyatt
Posts: 2497
Joined: Thu Aug 22, 2013 6:54 pm
Location: Clearwater, Florida

Post by mawyatt »

Here’s another view with the chip righted, and different exposure angle. This angle revels more details but the colors aren’t as pronounced.

Image

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