Found 6 alternatives for RLM-63-2W+ by Mini-Circuits. Rf Misc Ics And Modules — 6-SMD, No Lead.
LIMITER 30 - 3000 MHZ, 50
LIMITER 20 - 4000 MHZ, 50
LIMITER 0.2 - 3000 MHZ, 50
LIMITER 0.5 - 520 MHZ, 50
LIMITER 30 - 3000 MHZ, 50
LIMITER 3 - 750 MHZ, 50