Terminated SPDT Coaxial Switches
This RLC Electronics’ Terminated Single Pole, Two Position Coaxial Switch provides proven reliability, long life and excellent electrical performance. It features extremely low insertion loss and VSWR over the entire DC-50 GHz range while maintaining high isolation. Standard RF power rating is 2 watts cw limited by the termination. Terminations can be provided in either an internal or external configuration, or can be replaced by SMA “2.92mm” or “2.4mm” connectors for special applications.
Specifications
ST1-2-1–2–3–4
Switch Type |
SINGLE POLE TWO THROW |
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Frequency Range |
DC-18GHz |
26.5 GHz option |
40 GHz 50 GHz option option |
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Frequency (GHz) |
DC-4.0 |
4.0-12.4 |
12.4-18.0 |
18-26.5 |
DC-4.0 |
4.0-12.4 |
12.4-18 |
18-26.5 |
26.5-40 | 40-50 |
Insertion Loss (dB Max) |
0.1 |
0.2 |
0.3 |
1.0 |
0.2 |
0.4 |
0.5 |
0.7 |
0.9 | 1.1 |
VSWR (Max) |
1.2:1 |
1.3:1 |
1.5:1 |
1.8:1 |
1.25:1 |
1.4:1 |
1.5:1 |
1.7:1 |
2.0:1 | 2.0:1 |
Isolation (dB Min) |
80 |
70 |
60 |
40 |
80 |
70 |
60 |
55 |
50 | 50 |
Power Rating: RF Cold Switching: 2 watts average Impedance: 50 Ohms/75 Ohms.* Operating Power 25 C: (Failsafe): 12Vdc at 510ma nom, 28Vdc at 280ma nom (Latching): 12Vdc at 470ma nom. 28Vdc at 300ma nom. Current applied 10 ms min.cutthroat circuitry (standard), recovery time 100ms nom. Connectors, RF: SMA, female(2.92mm for 40GHz, 2.4mm for 50GHz) |
Connectors, Power: Feed through solder lugs. Life: 1,000,000 operations Switching Time: 25ms Max Weight: 4 oz. Environmental Conditions: MIL-DTL-3928 Operating Mode: Failsafe or Latching Switching Sequence: Break before make |
To designate the switch desired use:
1: “M” for Manual, “R” for Remote. 2: “A” for 115 Vac, “D” for 28 Vdc or “H” for 12 Vdc. 3: “I” for indicators if desired. |
4: “L” for latching cutthroat if desired. 5: “TL” for TTL Driver if desired 6: “26” for 26 GHz, “40” for 40 GHz, “50” for 50GHz |
Example: STR-2-D is a SP2T, 28 Vdc; without indicators, Failsafe switch 50 ohms
A 75 ohm version is available. Please contact factory for details.
Outline Drawing
STR-2-D, STM-2
