MIL-STD-1553 BUS terminators are used to terminate an open BUS line on a 1553 data bus. This terminator mates to any TRB 2-lug jack. These jacks are found on many standard 1553 data bus coupler and relay device. Resistor is per MIL-R-39007 3000 OHM +/- 1% 2 WATT.