https://www.arunmicro.com/products/d-sub-feedthroughs/
D-sub Electrical Feedthroughs - Arun Microelectronics
D-sub electrical feedthroughs. 9 or 15-way versions available.
electrical feedthroughssubarunmicroelectronics
https://imapsource.org/article/57004-hermetic-electrical-feedthroughs-based-on-the-diffusion-of-platinum-into-silicon/stats
Hermetic Electrical Feedthroughs Based on the Diffusion of Platinum into Silicon | Published in...