In the article according to concept of the functionally complete tolerant element (FCT) it is proposed fault tolerant LUT (Look up table) FPGA. The FCT element (logic element with the redundancy basis) retain functional completeness in case faults. FCT element allows to perform FPGA self-repair after faults. The article discusses the advantage of the quadrupling of the LUT 's transistors in comparison with the tripling in a number of cases. It appears to be more preferable on the reliability function, than tripling, moreover expenditure for this - order 30%, that not too it is much in comparison with a multiple increase in the equipment during the introduction of additional channels.
