This paper presents a new generation of long linear butted arrays developed at LETI / LIR and dedicated to high resolution IR imaging for space and airborne applications. These IR focal plane arrays are based on modular architecture composed of butted CdHgTe photovoltaic detection circuits and Si CMOS multiplexers. CdHgTe detectors are made with the new planar technology leading to very high performances with low dark current. Specific in house techniques of dicing and butting are used in order to perform linear detection arrays, free of defect. Detectors redundancy has also been implemented in order to compensate bad detectors (deselection) or to improve the sensor uniformity. A presentation of the main electro-optical performances obtained in the two spectral ranges - 3-5 and 8-10 micrometers - is given. Comparison with the previous prototype (first generation) developed at LIR will also be discussed in the paper. Details of involved technologies, FPA architecture, operability and performances (NETD, responsivity, dark current .) of butted sensors working in the 3-5 and 8-10 micrometers spectral ranges will be presented.