The SA1-BMF-1-1G-ST from Xiamen HDG Telecom Equipments is a RF Surge Protector with Frequency DC to 1 GHz, Insertion Loss 0.15 dB, Operating Temperature -40 to 85 Degree C, Surge Current 20KA(8/20 µs). More details for SA1-BMF-1-1G-ST can be seen below.