The K508 micro cooler design model is solidly based on the concepts of direct detector mounting on the coolers cold finger, and the integral construction of the cooler Dewar envelope. It is clean, silent and most importantly highly reliable. The K508 has been in service since 1994. Over 70,000 coolers have been fielded and operate reliably onboard numerous ground, airborne, hellebore, naval and space applications. The K508 contains an onboard temperature controller, which offers standby, remote shutdown and over-temperature/ over- current protection options. By adapting various types of Dewar envelopes, this micro cooler can meet the cooling demands of the most advance IR detectors.