I am using LDMOS: BLS6G3135S-20 and BLS6G3135S-120 in a pulsed power Amplifier. I am giving continuous DC power Supply and Pulsed RF to these devices. 20watts LDMOS is working fine. But 120 watts LDMOS is blowing -up. Can anybody help me by clarifying whether continuous DC supply can be given to this 120watts LDMOS. or Pulsed DC & Pulse RF is a must?