Made to order from 1 to 40 dB, for 600-ohm line impedance.
Optimized for both voltage-driven (like from an op amp) and impedance-driven (like from a transmission line), to provide the most accurate attenuation in either case.
The low impedance error ensures accuracy when two or more square pad attenuators are hooked in series to make another value. (Like 10 dB + 3 dB to make 13 dB.)
Works on split 66M Blocks. Doesn't fit on 66B blocks.
Also available in modular RJ11 and RJ45 versions.