The KLP177121 from Konnect RF is a RF Surge Protector with Frequency DC to 6 GHz, Input Power 30 W, Insertion Loss 0.25 to 0.30 dB, Operating Current 10 A (Through Current), Operating Temperature -40 to 90 Degree C. Tags: Gas Discharge Tube. More details for KLP177121 can be seen below.