The Agilent/Keysight 85331-60035 is an absorptive solid-state PIN diode switch engineered for RF and microwave measurement systems. It delivers high isolation and low insertion loss across a broad frequency range, with absorptive characteristics that ensure good impedance matching—critical for accurate network analyzer measurements and demanding test environments.
Technical Specifications
Switch Type: Absorptive solid-state PIN diode
Frequency Range: 45 MHz to 50 GHz
Isolation: 90 dB (typical)
Insertion Loss: Low
Configuration: Single-pole, double-throw (SP2T) or single-pole, four-throw (SP4T) options available within the 85331B/85332B series
Switching Speed: Fast
– Key Features
• Absorptive design provides impedance matching without reflections
• PIN diodes in series with each output port for controlled switching
• Series and shunt PIN diode configurations available for enhanced isolation
• DC bias control for on/off switching
• High isolation performance typical across the specified bandwidth
– Typical Applications
• Antenna test systems
• Radar applications
• Multi-port RF and microwave test configurations
• Co- and cross-polarization measurement setups
• General RF/microwave test systems requiring fast switching and high isolation
– Compatibility & Integration
Designed for integration with Agilent/Keysight network analyzers, including the PNA-X series (e.g., N5241A), enabling advanced RF and microwave component characterization. RF connectors and bias control connectors support standard coaxial connection types. The switch integrates into test systems where fast switching performance and high port isolation are required.

















