Hermetic seals are used throughout the high-tech industry to provide maximum packaged protection from environmental elements that can reduce the reliability and required lifetime of critical electronics. Laser welded (or laser fusion welded) hermetic seals are the certified method governed by many military and aerospace quality and reliability standards (MIL-STDs).
Devices designed to (or near to) these standards, include those found in the RF/microwave,space, aerospace, military, high-power, high-frequency, science/research, and medical device markets, where maintaining a near absolute barrier between the electronics and outside conditions is necessary.
Read and learn more in a two-part series!