Power is a system specification
Maximum RF power is not a single universal number. Frequency, connector type, contact geometry, ambient temperature, altitude, duty cycle, load VSWR and whether the switch is moving all influence safe operation.
CW versus pulsed power
Continuous-wave power produces sustained heating, while pulsed signals may create high peak electric fields even when average power is modest. Both average and peak limits can matter.
Frequency effects
Power capability often decreases with increasing frequency because conductor loss, connector behavior and electric-field concentration change. Use the manufacturer’s frequency-dependent power chart when available.
Load mismatch
A mismatched load produces standing-wave voltage and current peaks. A switch rated for a given power into a well-matched 50-ohm load may require derating when the load VSWR is higher.
Terminated switches
Internal terminations have separate dissipation limits. A system can be within the switch’s through-path carrying capability yet exceed the termination rating if substantial RF is routed into an inactive terminated port.
Environmental derating
High ambient temperature and reduced air density can limit heat removal or voltage withstand. Aerospace and defense applications should evaluate the environmental conditions specified for the actual installation.
Engineering approach
Define frequency, waveform, average and peak power, VSWR, switching condition, duty cycle, temperature, altitude and expected life before selecting the switch. For operation near a limit, obtain application-specific confirmation rather than relying on a catalog headline.
Key takeaway
Power handling depends on frequency, mismatch, waveform, switching condition and environment – not just watts.