FACXXXXX X - Soldering method A or B XX- attenuation: * *dB. XX- frequency range 06: DC to 6GHz 10: DC to 10GHz 12: DC to 12.4GHz 18: DC to 18GHz 26: DC to 26.5GHz. Soldering method A:The gold terminals in this series are just designed to use wire-boning application. Soldering method B:The .