The L-3 / Narda 4913 is a passive ferrite isolator engineered for RF and microwave applications across the 2 to 4 GHz band. This component delivers 18 dB minimum isolation while maintaining insertion loss below 0.5 dB, protecting sensitive equipment from reflected power without significant signal degradation. Peak power handling reaches 50 W in both forward and reverse directions, with 25 W average forward power capability and 1 W average reverse power rating.
## Technical Specifications
• **Frequency Range:** 2 GHz to 4 GHz
• **Isolation:** 18 dB (minimum)
• **Insertion Loss:** 0.5 dB (maximum)
• **VSWR:** 1.30:1 (maximum)
• **Peak Power (Forward & Reverse):** 50 W
• **Average Power (Forward):** 25 W
• **Average Power (Reverse):** 1 W
• **Connector Type:** SMA Female
• **Operating Temperature Range:** 0°C to +55°C
• **Compliance:** RoHS3
## Key Features
• Low insertion loss design minimizes signal degradation in transmission paths
• High isolation rating protects upstream and downstream circuitry from reflections
• Compact module form factor with SMA connectors for straightforward integration
• Rated for continuous operation across industrial temperature ranges
## Physical Specifications
• **Depth:** 1.60 inches
• **Width:** 1.65 inches
• **Height:** 1.10 inches
• **Thickness:** 1.00 inch
• **Mounting Hole Depth:** 0.75 inches
• **Hole Size:** 0.18 inch
## Typical Applications
• Test and measurement systems requiring signal protection
• Radar transmitter and receiver chains
• Communication equipment with sensitive downstream amplifiers
• RF transmission lines demanding high isolation and low loss
