Dow-Key Microwave has doubled the design life of their 5 × 5-series DC to 18 GHz multi-position switch from 1 to 2 million cycles. The switch is ideal for ATE applications where many DUTs repeatedly need to undergo testing. The break-before-make coaxial switch comes in SP3T, SP4T and SP6T configurations and are normally open until actuation. Insertion loss is less than 0.5 dB at 18 GHz, with isolation at least 60 dB and VSWR no greater than 1.5:1. As expected, loss, isolation and VSWR are better at lower frequencies: 0.2 dB, 70 dB and 1.2:1, respectively, at 4 GHz. Switching time is 20 msec maximum.
The switches are available with various options such as TTL or non-TTL control, and offered with standard coil voltages 12 or 28 V. Other voltages can be selected upon request. SMA-type connectors provide the input and output RF interface. The operating temperature range is -25° to +65°C. The 2 million cycles switch has a small footprint with the size of only 1.755" × 1.755" × 1.97". The standard solution is RoHS compliant but can be designed without RoHS materials if needed.