The L-3/Narda 4378BM is a 50 Ohm SMA male coaxial fixed termination engineered for RF and microwave test, measurement, and signal conditioning applications across DC to 18 GHz. This connectorized termination delivers 5 Watts average power handling with 2 kW peak capability, maintaining maximum VSWR of 1.05:1 across its operating band. Built to military and commercial specifications, the 4378BM weighs 85 grams and integrates directly into systems requiring precision impedance matching and signal integrity at frequencies spanning DC through 18 GHz.
## Technical Specifications
• Impedance: 50 Ohms
• Frequency Range: DC to 18 GHz
• Power Handling (Average): 5 Watts
• Power Handling (Peak): 2 kW
• VSWR (Maximum): 1.05:1 (frequency-dependent: 1.05 + 0.015f GHz)
• Connector Type: SMA Male
• Grade: Military, Commercial
• Weight: 85 grams
## Key Features
• Broadband coverage from DC to 18 GHz enables use across multiple frequency bands
• Low VSWR specification ensures minimal signal reflection and measurement error
• High peak power rating (2 kW) accommodates transient and pulsed applications
• Military and commercial grade construction for demanding field and laboratory environments
## Typical Applications
• RF and microwave test set terminations
• Measurement system load balancing
• Signal chain impedance matching
• Network analyzer port termination
• Pulse and transient signal applications requiring high peak power absorption
## Compatibility & Integration
The 4378BM integrates into 50 Ohm RF systems with SMA male connector requirements. Its DC to 18 GHz frequency range supports integration across legacy narrowband systems through modern broadband measurement platforms and signal conditioning circuits where controlled impedance termination is essential.
