Quantic PMI Model DTA-18G40G-30-CD-1 is a 10 BIT programmable 30 dB pin diode attenuator with a step resolution as low as 0.06 dB over the frequency range of 18 to 40 GHz. Housing measures 2.0" x 1.8" x 0.5" with 15 Pin Micro-D female control connector (Mating Connector Supplied) and 2.92mm female connectors.