Source: https://web.archive.org/web/20210414143229/https://twitter.com/Siliconinsid/status/1382340943811121163
Text: Allegro A3967 (2010)
The A3967 is an integrated stepper motor driver with microstepping capabilities. I used this chip in my microscope stage controller, but the magic smoke came out. Can you see the failure point?

Package

Die