DCB DC Blocking Arrestors
The DCB Series from NexTek is designed to provide broadband surge protection while blocking DC signals, using an integrated capacitor-based shunt design. These arrestors offer consistent performance across major RF bands and simplify system integration by eliminating the need for external DC-blocking capacitors.
By shunting transient energy to ground and blocking DC, DCB units are ideal for receive-only RF paths, front ends that are DC-sensitive, or systems where DC power is injected elsewhere. These arrestors also support global mitigation requirements for lightning (LEMP), ESD, and EMP transients, especially in commercial, telecom, and military applications.
Compact and rugged, each DCB unit is optimized for low insertion loss and flat RF performance. DCB components come in two subgroups: COM, operating over 698 to 2700 MHz. and WFI, with a range of 2000-6000 MNHz. Constructed with high-reliability materials and sealed for outdoor use, the series supports long-term deployment in critical RF environments.
Key Features and Benefits:
- Capacitor-based shunt design blocks DC while passing RF
- Frequency range: 698–2700 MHz / 2000-6000 MHz
- Provides protection against lightning, ESD, and EMP events
- Eliminates need for discrete external DC-block capacitors
- Available in weather-sealed, N-Type connector formats
- Optimized for receive paths and DC-isolated circuits
- Compact and maintenance-free design
*example product shown
Connector Types
- N-Type
Frequency Range
- 698-2700 MHz
- 2000-6000 MHz (WFI Series)
Threat Types
- Lightning [LEMP]
- Static [ESD]
- High Speed [EMP]
Design Highlights
- DC Blocking, Capacitor Shunt Technology
- Excellent RF Performance
- Class-Leading Surge Ratings
- High Quality Design & Materials
- Compact Form Factors
- Designed, Assembled, and Tested in the USA
Applications for DCB DC Blocking Arrestors
DCB arrestors are ideal for systems that require DC isolation while maintaining broadband RF performance. These applications often involve sensitive receive-only equipment or architectures where DC is supplied through other paths. Common use cases include:
- Receiver protection in land-mobile radio and base station equipment
- Antenna systems where DC is injected remotely
- Distributed antenna systems (DAS) and small cell networks
- Public safety, commercial wireless, and military RF platforms
- Installations requiring compliance with lightning and EMP protection standards
These arrestors help simplify designs by integrating RF protection and DC isolation in a single, compact unit.
DCB DC Blocking Arrestor Products
DCB products integrate a capacitor-based blocking circuit with broadband lightning protection, making them ideal for receive-only paths and RF systems that require DC isolation. Available in a range of N-type connector formats, these arrestors cover standard telecom and high-frequency bands, with options for commercial and wide-frequency applications.
Available models include:
- DCB-WFI-NFM: Wide Frequency Isolated DC Block, N-female to N-male
- DCB-WFI-NFF: Wide Frequency Isolated DC Block, N-female to N-female
- DCB-COM-NMF: Commercial Grade DC Block, N-male to N-female
- DCB-COM-NFM: Commercial Grade DC Block, N-female to N-male
- DCB-COM-NFF: Commercial Grade DC Block, N-female to N-female
For full DCB Series specifications or assistance choosing the right part, visit the Product Finder or contact the NexTek team.
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