The Dow-Key Microwave 403-114 is a Single Pole Double Throw (SPDT) electromechanical RF coaxial relay switch engineered for DC to 18 GHz operation. This switch provides signal routing and attenuation control in RF signal paths using SMA connectors and operates on 12-15 VDC coil voltage. The 403-114 delivers the mechanical reliability and performance consistency demanded in high-frequency test environments and production systems.
## Technical Specifications
• **Configuration:** SPDT (Single Pole Double Throw)
• **Frequency Range:** DC to 18 GHz
• **Connector Type:** SMA
• **Coil Voltage:** 12-15 VDC
• **Weight:** Approximately 2 oz
• **Dimensions:** 1.40″H × 1.34″L × 0.50″W (35.6 × 34.0 × 12.7 mm)
## Key Features
• Electromechanical switching architecture for dependable RF signal control
• Wide frequency coverage spanning DC through 18 GHz
• SMA connector interfaces for direct integration with standard test equipment
• Single coil actuation with 12-15 VDC supply
• Compact footprint suitable for rack-mounted and benchtop systems
## Typical Applications
• Test and measurement systems
• Communication systems
• Radar applications
• Aerospace and defense systems
• Electronic warfare (EW) systems
## Compatibility & Integration
The 403-114 accepts standard 12-15 VDC coil drive signals and interfaces via SMA connectors, enabling straightforward integration into existing RF measurement architectures and automated test equipment (ATE) platforms. Its SPDT configuration supports both signal selection and bypass routing in dual-channel signal paths.
