Quantic PMI Model No. DTA-0R5G4G-60-CD-1-OPT12VDC is a non-reflective 10-Bit Programmable 60 dB Pin Diode Attenuator with step resolution as low as 0.06 dB over the frequency range of 0.5 to 4 GHz. Specifications include Insertion Loss of 2.7 dB, VSWR 1.8:1, attenuation flatness: ±0.16 dB; accuracy of attenuation is ±0.6 dB with a switching speed of 1 µs. Package size is 2.00" x 1.81" x 0.88" with SMA female connectors. https://www.quanticpmi.com/product-details/dta-0r5g4g-60-cd-1-opt12vdc
