Miniaturization in Hermetic Switches: Design Trade-offs for Space-Constrained High-Reliability Applications
Author: Postek Engineering Team | Reading time: 10 minutes Introduction Hermetically sealed micro switches are essential in aerospace, cryogenic, and high-reliability industrial systems — but they’re historically large. The trade-off was straightforward: hermetic sealing required thick metal walls, large glass-to-metal seals, and generous internal clearance for thermal expansion, all of which drove up envelope size. Designers working in space-constrained applications — compact actuators, dense flight systems bays, small orbital-platform mechanisms — were forced to choose between sealing and size. ...