The K508 microcooler design model is solidly based on the concepts of direct detector mounting on the cooler’s cold finger, and the integral construction of the cooler and Dewar envelope. Operation of the integral Stirling microcooler, driven by a DC brushless motor, is clean, silent and highly reliable. Model K508 has been in service since 1994. Over 60,000 coolers have been fielded and operate reliably onboard numerous ground, airborne, heliborne, naval and space applications. The K508 contains an onboard temperature controller, which offers standby, remote shutdown and over-temperature / over-current protection options. By adopting various types of Dewar envelopes, this microcooler can meet the cooling demands of most advanced IR detectors.  TECHNICAL SPECIFICATIONCooler Weight: 450 gr.Ambient Temperature Range:- Operational: -40°C...+85°C- Non-Operational: -56°C...+85°CInput Voltage: 12-16V or 18-28VCooldown Time (250J @77K @23°C):5 min. Typ.Steady State Input Power:7Wdc@220mW, 77KMTTF > 10,000 HoursMaximum Input Power: 17WDCMeets Environmental Conditions perMIL-STD-810 

The K508N is a new member of RICOR‘s microcoolers family. This model was developed as a high reliability K508 derivative with a goal of increasing cooler reliability above 20,000 operating hours. K508N is ideal for systems‘ life cycle cost improvement especially for applications operating 24/7 in border surveillance IR systems. The K508N is fully interchangeable with the standard K508 cryocooler and designed to be integrated with all types of K508 cold fingers/DDAs.The cooler is designed to withstand harsh environmental conditions and excels in low vibration export and low acoustic noise level. TECHNICAL SPECIFICATIONCooler Weight: 470 gr.Cooldown Time (250J @77K @23°C):5 min. Typ.Input Voltage: 12-16 or 18-28VCooling Capacity:500mW @77K @71°C700mW @77K @23°CSteady State Input Power:7.5Wdc@220mW, 77KMTTF > 20,000 Hours (Goal)Maximum Input Power: 18.5WdcMeets Environmental Conditions perMIL-STD-810Ambient Temperature Range:- Operational: -40°C...+85°C- Non-Operational: -56°C...+85°C 

Model K543 is a new member of RICOR’s expanding family of highly reliable integral rotary microcoolers. This Model was developed to meet the growing demand for more cooling power and extended lifespan. The cooler is designed primarily for Mega pixel format FPAs, Dual band detectors, QWIP applications and Slip-On configuration where reliability, cooling power, robustness and low acoustic signature are of concern. This model is integrated with K548 cold fingers. The cooler is designed to withstand harsh environmental conditions and excels in low vibration export and low acoustic noise level.TECHNICAL SPECIFICATIONCooler Weight: 830 gr.Cooldown Time (500J @77K @23°C):4 min. Typ.Input Voltage: 18-28 VDCCooling Capacity: 1W @77K @71°CSteady State Input Power:(1000mW @77K @23°C): 20Wdc Typ.MTTF > 15,000 Hours (Goal)Maximum Input Power: 45WdcMeets Environmental Conditions perMIL-STD-810Ambient Temperature Range:- Operational: -40°C...+71°C- Non-Operational: -56°C...+85°C 

Model K561 microcooler is a member of RICOR’s microcoolers family. Over 10,000 field proven units sold since 2005. This model was specially developed to fit handheld thermal imager’s applications where low input power and bulk are the most important parameters. This cooler is based on the same design concepts as RICOR’s other microcoolers and is highly reliable. The cooler include external controller easily equipped to the system.TECHNICAL SPECIFICATIONWeight (with controller and harness): 290 gr.Cooldown Time (190J @80K @23°C):< 7 min. Typ.Input Voltage: 6, 12 VDC (Nominal)Cooling Capacity:1/4W @80K @65°CSteady State Input Power:4.5Wdc@170mW, 80KMTTF > 8,000 HoursMaximum Input Power: 16WDCMeets Environmental Conditions perMIL-STD-810Ambient Temperature Range: -40°C...+71°C