Mini-circuits ZFDC-10-2

The Mini-Circuits ZFDC-10-2 is a directional coupler operating across DC to 1 GHz, engineered for accurate RF signal sampling, monitoring, and measurement in 50-ohm systems. This shielded module provides stable coupling of approximately 10.75 dB with directivity reaching 30 dB or higher, enabling reliable signal extraction with minimal mainline disruption. Insertion loss ranges from 1.02 to 1.36 dB and decreases at higher frequencies, while return loss improves across the band, reaching 40 dB or better at upper frequencies. The ZFDC-10-2 handles average power levels of 1.5 to 3 Watts and maintains VSWR of 1.50:1, making it suitable for transmitter and receiver systems, instrumentation, and RF test applications in VHF/UHF bands.

– Technical Specifications

• Frequency Range: 0 to 1000 MHz
• Impedance: 50 Ohms
• Coupling: 10.6 to 11.06 dB typical (nominal 10.75 dB, ±0.5 dB variation)
• Directivity: 30 dB minimum, up to 49.75 dB across band (improves with frequency)
• Insertion Loss: 1.02 to 1.36 dB typical (decreases with increasing frequency)
• Return Loss: 16.05 to 39.14 dB typical (improves at higher frequencies)
• VSWR: 1.50:1
• Average Power Handling: 1.5 to 3 Watts
• Operating Temperature: −55°C to 100°C
• Storage Temperature: −55°C to 100°C

– Key Features

• Stable coupling factor across full frequency range
• Low, frequency-dependent insertion loss
• Frequency-dependent directivity enhancement
• Compact shielded construction: 1.25″ × 1.25″ × 0.75″
• Available with BNC, SMA, or N-type connectors

– Typical Applications

• RF signal sampling and power measurement
• Transmitter and receiver monitoring
• Feedback loop generation
• VHF/UHF communication test setups
• Instrumentation and measurement systems

– Compatibility & Integration

Designed for integration into 50-ohm RF systems requiring precision signal extraction and isolation.