The Keysight Technologies (formerly Agilent / HP) 87104A is a high-performance multiport SP4T coaxial latching switch designed for RF and microwave signal routing. Operating from DC to 4 GHz, it provides excellent insertion loss, isolation, and VSWR specifications with high repeatability. Featuring a latching solenoid actuator with self-interruption, it is highly optimized for automatic test equipment (ATE) and RF signal monitoring applications.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | SMA (female) RF connectors; 16-pin ribbon cable connector or solder terminals (configuration dependent) |
Physical
| Parameter | Value |
|---|---|
| Power Supply | 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 |
| Operating Temperature | -25 °C to +75 °C |
| Dimensions (W×H×D) | 63.5 mm × 52.1 mm × 63.5 mm |
RF Performance Specifications
| Parameter | Value |
|---|---|
| Frequency Range | DC to 4 GHz |
| Characteristic Impedance | 50 Ω |
| Insertion Loss | < 0.3 dB |
| Isolation | > 100 dB |
| Voltage Standing Wave Ratio (VSWR) | < 1.15 |
| Insertion Loss Repeatability | 0.03 dB maximum (guaranteed up to 5,000,000 cycles) |
Actuator and Electrical Control Specifications
| Parameter | Value |
|---|---|
| Actuator Type | Latching with self-interruption |
| Nominal Coil Voltage | 24 VDC (Standard) |
| Coil Current | 120 mA at 24 VDC (per port) |
| Switching Speed / Transition Time | < 15 ms |
| Self-Interruption Feature | Yes (solenoid power automatically disconnects after switching) |
Mechanical and Interface Characteristics
| Parameter | Value |
|---|---|
| Switch Configuration | SP4T (Single Pole Four Throw), multiport, unterminated |
| RF Connector Type | SMA (female) |
| Mechanical Lifetime (Cold Switching) | 5,000,000 cycles (guaranteed) |
| Typical Mechanical Lifetime | 10,000,000 cycles |
Environmental and Reliability
| Parameter | Value |
|---|---|
| Storage Temperature Range | -55 °C to +85 °C |
| Operating Humidity | 95% relative humidity at 40 °C for 5 days |
Configuration Options
| Parameter | Value |
|---|---|
| TTL/CMOS Drive Option | Option 161 (incorporates TTL/CMOS drive and electronic indicators) |
| Coil Voltage Selection Options | 5 VDC (Option 011), 15 VDC (Option 015), 24 VDC (Option 024) |
| Indicator Contact Options | Solder terminals (Option 100) or ribbon cable (Option 161) |
RF Performance
| Parameter | Value |
|---|---|
| Cold Switching RF Power Handling (Average) | 150 W CW (at 4 GHz) |
| Hot Switching RF Power Handling (Average) | 2 W CW |
| Hot Switching RF Power Handling (Peak) | 100 W (10 µs pulse width, 1% duty cycle) |
Environmental
| Parameter | Value |
|---|---|
| Operating Shock | 50 g (11 ms half-sine pulse) |
| Non-operating Shock | 500 g (1.8 ms half-sine pulse) |
| Operating Vibration | 7 g (5 to 2000 Hz) |
| Non-operating Vibration | 20 g (20 to 2000 Hz) |
| Operating Altitude | 4,600 m (15,000 ft) |
| Storage Altitude | 15,300 m (50,000 ft) |
Inputs & Outputs
| Parameter | Value |
|---|---|
| Control Connector Type | Solder terminals (Option 100) / 16-pin ribbon cable (Option 161) |
RF Characteristics
| Parameter | Value |
|---|---|
| Number of Throws | 4 |
| Termination | Unterminated |
| Number of Ports | 5 (1 common, 4 output) |
Performance
| Parameter | Value |
|---|---|
| Switching Sequence | Break-before-make |
Technology
Coaxial Latching Switch
Applications
RF and microwave signal routing, automated test equipment (ATE), RF communications testing
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