Dow-Key has released its new line of SPDT terminated switches in the form of the 521U series. This series of break-before-make SPDT switches boasts a 5 million actuation life cycle and various RF configuration options: unterminated 2/3 (DP3T) switch, 2 W or 5 W internal terminations, and 2 W or 5 W external terminations.
The operational frequency range of the standard 521U switch is from DC to 18 GHz but can be extended to 26,5 GHz with the 'K' option. The standard operating temperature of -25°C to +65°C can also be extended to -55°C to +85°C with the 'T' option.
The switch is offered in failsafe, pulse latching, or latching self cutoff models and is available with active high or active low TTL operation. There is a choice of 12, 24, or 28 V d.c. coil voltage with a maximum switching time of 15 ms. This unit comes with SMA RF connectors and optional indicator circuitry.
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