Keysight Technologies (Agilent HP) Switches
22 models with full specifications in Switches.
This page summarizes Keysight (formerly Agilent / HP) electromechanical RF/microwave switches and the associated switch-module ecosystem used in automated test and data-acquisition systems. It is written for instrument engineers and technical buyers who need to match switch topology, frequency band, termination style and control/drive method to an application. Examples are given to illustrate how the product range is structured: compact coaxial SPDT/SPnT devices for RF routing, multiport SP4T/SP6T options for multi-channel routing, and modular switch/driver cards for 34970/34972/34980 or 3488A mainframes.
- Characteristic impedance
- 50 Ω
- Typical actuator type
- Latching (many models)
- Power-supply options
- 5 V / 15 V / 24 V DC (model dependent)
- Frequency coverage (range shown)
- DC to 67 GHz (N1810TL option)
All models
| Model | Type | Operating Temperature | Power Supply | Storage Temperature Range |
|---|---|---|---|---|
| N1810TL | *misc | -25 °C to +75 °C | 5 V, 15 V, or 24 V DC (coil voltage option dependent) | — |
| 11713A | Drivers | 0 to 55 | 100/120/220/240 Vac (+5%, -10%), 48 to 440 Hz, 80 VA max | — |
| 34903A | Actuators | 0 °C to 55 °C | — | -40 °C to 70 °C |
| 8762B | Coaxial | -25 to +75 °C | 5 Vdc / 15 Vdc / 24 Vdc (nominal, option dependent) | — |
| 87104C | *misc | -25 to +75 °C | — | -55 °C to +85 °C |
| 87106B | *misc | — | — | -55 °C to +85 °C |
| N1810UL | *misc | -25 to +75 °C | 5 VDC / 15 VDC / 24 VDC nominal (option dependent) | -55 to +85 °C |
| 3488A | Switch Control Units | 0°C to 55°C | 100 V / 120 V / 220 V / 240 V AC (+5%, -10%), 48 Hz to 66 Hz, 24 VA maximum | -40°C to +75°C |
| 87104B | *misc | -25 to +75 °C | 24 VDC nominal (Option 024, range 20-30 VDC), 15 VDC nominal (Option 015, range 12-20 VDC), or 5 VDC nominal (Option 011, range 4.5-7 VDC) | -55 to +85 °C |
| 8766K | Microwave | -25 to +75 | 5 VDC / 15 VDC / 24 VDC (option dependent) | -55 °C to +85 °C |
| 8761B | Coaxial | -55 to +85 °C | 24 to 30 VDC solenoid drive | — |
| 8762C | Coaxial | -20 to +75 °C | 5 Vdc / 15 Vdc / 24 Vdc (option dependent) | -55 to +85 °C |
| 8763B | Coaxial | -25 to +75 °C | 5 Vdc / 15 Vdc / 24 Vdc (option dependent) | -55 to +85 °C |
| 34904A | *misc | 0°C to 55°C | Powered directly by 34970A/34972A mainframe backplane | — |
| 34945A | Microwave | 0°C to 55°C | Powered by 34980A mainframe; onboard drive supply: 5 V, 12 V, 24 V, or external supply up to 30 V | -40°C to 70°C |
| 34947A | Microwave | 0 °C to 55 °C | Powered directly from 34980A mainframe backplane | -40 °C to 70 °C |
| 44473A | *misc | 0 to 55 °C | Powered directly from the HP 3488A mainframe backplane | — |
| 87104A | *misc | -25 °C to +75 °C | 24 VDC nominal (20 to 30 VDC range) standard; optional 5 VDC (Option 011) or 15 VDC (Option 015); typical current 120 mA @ 24 V | -55 °C to +85 °C |
| 87106A | *misc | -25 to +75 °C | 24 VDC (Option 024, standard), 15 VDC (Option 015), or 5 VDC (Option 011) | -55 to +85 °C |
| 8762A | Coaxial | -20 to +75 °C | 5 Vdc (Option 011) / 15 Vdc (Option 015) / 24 Vdc (Option 024) | -55 to +85 °C |
| 8765B | Coaxial | -55 to +85 °C | 4.5 to 32 VDC actuator voltage (option dependent) | — |
| 8768K | Microwave | -25 to +75 °C | 24 VDC nominal (20 to 30 VDC), Optional 5 VDC (4.5 to 7 VDC, Option 011), Optional 15 VDC (12 to 20 VDC, Option 015) | -55 to +85 °C |
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Product structure and where each fits
Keysight’s electromechanical switch offering separates into two practical groups: compact coaxial switches (single‑pole multiple‑throw and transfer switches) optimized for RF/microwave routing, and modular switch cards for data acquisition and high‑channel-count switching. Compact coaxial parts are available in SPDT, SP3T, SP4T, SP5T and SP6T configurations and are specified to particular frequency bands — for example, the 87104A and 87104B are SP4T devices rated to DC–4 GHz and DC–20 GHz respectively, the 87104C extends to DC–26.5 GHz, and the N1810TL offers option-dependent coverage up to 67 GHz. Multiport devices such as the 87106A/B provide SP6T routing with guaranteed repeatability and long mechanical life for applications that require many routes from a single input.
Key technical distinctions to watch
Termination: several switches are internally terminated on unused ports (terminated style) while others are unterminated. Examples: 87104B and 87104C are specified as terminated; 87104A is unterminated. Frequency and RF performance: insertion loss, isolation and VSWR vary by model and band — the 8762B is specified DC–18 GHz with insertion loss <0.25 dB to 2 GHz and <0.5 dB to 18 GHz; the 8762C covers DC–26.5 GHz with isolation >90 dB to 18 GHz and insertion-loss bands listed per frequency segment. Power handling and peak-pulse ratings differ as well (see individual model data). Mechanical and electrical life: several coaxial latching switches carry guaranteed minimum cycle ratings (many list 5,000,000 cycles).
Control, drive and integration options
Modular switch cards and external drive modules exist for system integration. The 34903A is a 20‑channel actuator/switch module for the 34970A/34972A mainframes; the 34947A provides three independent SPDT unterminated switches for the 34980A mainframe; the 34904A is a 4×8 matrix module for the 34970A/34972A. For standalone drive and remote control, the 11713A provides GPIB control and an integral 24 Vdc drive capable of driving up to ten relays. The 34945A is a 34980A plug‑in driver module whose onboard drive voltages are software selectable and which supports a large number of external extenders. Connector and interface choices include SMA female, solder terminals, D‑sub, ribbon cable and mainframe backplane connections — pick the mechanical/control interface that matches your rack or mainframe.
Popular models
Frequently asked questions
- When should I pick a terminated switch versus an unterminated one?
- Use a terminated switch when you need the unused port to present a 50 Ω load (reduces reflections in automated routing). Models specified with internal termination include the 87104B and 87104C; unterminated options include the 87104A and the 8765B.
- Which models cover the highest frequencies?
- For the highest optioned frequency coverage shown here, the N1810TL lists option-dependent frequency ranges up to 67 GHz. The N1810UL lists options up to 50 GHz; other coaxial parts cover lower bands (examples: 87104C to 26.5 GHz, 8762C to 26.5 GHz).
- How do I drive these switches from a mainframe or remotely?
- Module‑style switches plug into Keysight mainframes: the 34903A and 34904A are for the 34970A/34972A series, the 34947A and 34945A are for the 34980A. For external drivers, the 11713A offers GPIB control and an integral 24 Vdc drive with up to ten relay outputs; the 34945A provides onboard selectable coil voltages when used in a 34980A mainframe.