The KAT-4-D+ from Mini Circuits is a Fixed Attenuator with Frequency DC to 50 GHz, Attenuation 3.6 to 4.3 dB, Power 1.7 W, Attenuation Accuracy ±0.1 to 0.7 dB, Operating Temperature -40 to 85 Degree C. Tags: Die. More details for KAT-4-D+ can be seen below.