DC Blocks
Isolate direct current while maintaining signal integrity. Choose your configuration (Inner, Outer, Dual), then specify interface, frequency, and voltage for a quote.
How to Choose Your Configuration
Determine where the isolation barrier is placed within the coaxial structure.
Inner DC Block
Choose Inner when DC isolation is required strictly on the center conductor to protect sensitive inputs.
Quote Inner Series →Outer DC Block
Choose Outer when isolation is needed on the shield to prevent ground loops and low-frequency noise.
Quote Outer Series →Dual (Inner/Outer)
Choose Dual when both conductors require isolation for complete DC blockage across the entire line.
Quote Dual Series →Supported Interfaces
Ensure the block mates perfectly with your test port or cable assembly.
SMA
Request Specs →N-Type
Request Specs →2.92 mm
Request Specs →2.4 mm
Request Specs →Additional formats engineered on request:
Confirm Your Specs
Organize your requirements using these primary parameters before submitting an inquiry.
Submit Specs for Quote →| Parameter | Why It Matters |
|---|---|
| Block Type | Defines whether the inner conductor, outer shield, or both require DC isolation. |
| Frequency | Ensures the unit passes your required RF signal bandwidth reliably. |
| Impedance | Usually 50 Ω or 75 Ω. Matches your system to prevent signal reflection. |
| Max DC Voltage | The peak direct current the block can safely isolate to ensure reliable operation. |
Ready to request a quote?
Providing these parameters helps our engineering team configure the correct DC block efficiently.
Frequently Asked Questions
What is a DC Block? +
A coaxial component that blocks direct current (DC) while allowing high-frequency RF signals to pass.
How do I choose between Inner, Outer, and Dual blocks? +
Use Inner to isolate the center conductor, Outer to isolate the shield, and Dual for complete isolation on both.
Why does the Max DC Voltage rating matter? +
It dictates the maximum direct current the unit can safely block to ensure reliable operation and protect your system.
What details are needed for a quote? +
Provide the block type (Inner/Outer/Dual), interface, max frequency, impedance, and max DC voltage.
Configure Your DC Block
Connect with a Vinstronics engineer to verify your interface, frequency, and voltage specifications.