InSb-based detector dewar cooler assemblies (DDCAs) are available — in linear cryogenic cooler configurations — to qualified customers who accept the risks and support that are inherent with integrating a subassembly. The standard linear design uses a 1/3 Watt cooler. DDCAs are designed to operate in harsh environmental conditions and over a wide operating temperature range. Coolers are integrated with FLIR-designed hard-vacuum dewars offering a choice of apertures: f/2.5 or f/4.1. A 3-5 micron spectral range cold filter is incorporated into the dewar assembly. The dewar front window is germanium. A furnished connector provides the electrical interface to the DDCA. An interface description document is provided. Custom DDCA configurations are available, depending on end-user requirements and conditional on FLIR approval. Special build fees apply.