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Electromechanical Switches Are Designed for High Reliability

IRVINE, Calif.– A new series of electromechanical switches from Pasternack are reported to provide low insertion loss repeatability while covering broadband frequencies from DC to 40 GHz. Pasternack, a provider of RF, microwave, and millimeter wave products, has introduced 12 new models that "exhibit very low insertion loss repeatability with guaranteed levels of 0.03 to 0.05 dB over 5 to 10 million switching cycles, depending on the model," the company said in a press release.

Test and measurement applications require signal processing component performance to be highly accurate and repeatable over long periods and under extreme conditions. In automated test systems where electromechanical switches are used for signal monitoring and routing applications, every switch will add repeatability error. Electromechanical switches that exhibit low insertion loss repeatability over millions of switching cycles play a critical role to ensure that overall system measurement accuracy is maintained at optimum levels. Typical applications for these switches include test instrumentation, electronic warfare, electronic countermeasures, microwave radio, VSWT, radar, space systems, and research and development.

The switches are offered in three configurations: single-pole double-throw (SPDT), single-pole four-throw (SP4T), and single-pole six-throw (SP6T). They are designed with latching actuators and features that include indicators, self-cut-off, TTL, and 50 Ohm terminations. Besides low insertion loss of 0.3 dB (with typical high isolation of 100 dB), their performance is said to include input power ratings of up to 70 watts CW and up to 1 watt for hot switching applications.

"Our new high-reliability electromechanical switches boast impressive insertion loss repeatability performance and a list of features that designers will find extremely useful," said Pasternack Product Manager Tim Galla, in a statement. "All twelve designs are available off-the-shelf with same day shipping."

The rugged, compact coaxial package assemblies are RoHS and REACH compliant, shielded for EMI/RFI suppression and magnetic fields. They are reported to be highly reliable and guaranteed to meet a series of MIL-STD-202 environmental test conditions that include exposure to temperature cycle, humidity, altitude, vibration, and shock. Depending on the model and frequency, the electromechanical switches are available with SMA or 2.92mm connectors, and some models support ribbon cable assemblies for DC, indicator, and TTL logic controls. All models are export rated as EAR99.

Detailed information on these products is available at

Pasternack (, an ISO 9001:2008 certified manufacturer and supplier, is an Infinite Electronics company.

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