Lifetime Connectivity

DC-BLOCK-3-7MF-02
DC Block

Rev : A | Rev date : 15 Nov 2025
This DC Block is used to prevent the flow of direct current and low frequency current surges along the inner and outer conductors of a transmission line, while permitting the unimpeded flow of RF signals. Applications include the blocking of current surges in subway tunnels and at antenna sites during lightening storms. The unit consists of a length of coaxial line with a series capacitor in both the center conductor and outer conductor to block the flow of low frequencies, while passing RF with negligible loss or reflections.

Feature / Benefits

• Multi-Band Frequency Range
• 250 W Avg. Power Rating
• 3 kV High Voltage Rating
• Minimal RF Insertion Loss
• Very Low Passive IM
• RoHS Compliant
• High Reliability
• 7-16 male/female connector
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General Specifications
Product Type DC Block
Electrical Specifications
Frequency Range 380 - 2700
Impedance 50 Ohm
Value of insertion loss Lower Frequency Upper Frequency
0.14 380 520
0.12 520 1700
0.2 1700 2700
VSWRMAX ReturnLossDB LowerFrequency UpperFrequency
1.4 15.5 380 520
1.2 21 520 2200
1.35 16.5 2200 2500
1.4 15.5 2500 2700
Intermodulation (IM3) 150 dBc with 2x43 dBm tones
Avg. RF Power 250 W
Max. RF Power 10000 W
Max. DC Blocking Voltage 3 KV
Mechanical Specifications
Input Connector Type 7-16 male
Output Connector Type 7-16 female
Temperature Specifications
Temperature Range -35°C to 75°C (-31°F to 167°F)

WINS Value Proposition

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