Siglent SSU5503A, 3‑Port SPDT Mechanical RF Switch, DC‑50 GHz

The Siglent SSU5503A is a compact, high-performance mechanical RF switch featuring three independent SPDT (single-pole, dual-throw) switch groups, each with one common and two selectable test ports. It covers DC to 50 GHz and is controlled via TTL logic or USB with SCPI compatibility through the EasySSU software. With switching times under 20 ms, excellent RF characteristics, and low insertion loss, the SSU5503A is ideal for automated multi-channel RF testing and routing in lab and production environments.

Key Features

• Three independent SPDT switch groups (Com1–Com3) each with two selectable ports
• Frequency capability from DC up to 50 GHz
• Fast switching (<20 ms) with low insertion loss and good impedance matching
• Control via TTL logic signals or USB with SCPI command support through EasySSU
• Compact metal enclosure with built-in USB interface and TTL input
• Ideal for automated multi-path routing in test systems