PTC - Fixed Gas Discharge Tube Fixed Gas Discharge Tube
PTC Series coaxial surge arrestors from NexTek offer robust, wideband protection using fixed gas discharge tube (GDT) technology. Designed for lightning, static discharge, and transient threat environments, PTC arrestors provide DC pass-through operation with excellent RF performance. These solutions are ideal for systems requiring consistent protection across a broad frequency range — from DC to beyond 12 GHz — within a single, compact arrestor.
Unlike other protection topologies, fixed GDT-based designs provide ultra-low capacitance and high surge handling in a durable, low-profile form factor. PTC Series units are available with a wide range of standard connector options, including N-Type, TNC, SMA, BNC, F-Type, and MMCX. Typical frequency coverage includes DC–3 GHz, DC–6 GHz, and DC–12 GHz+, depending on the model and GDT breakdown voltage.
PTC arrestors are engineered for general-purpose RF surge protection in wireless infrastructure, test equipment, transportation, and defense systems. By using precision GDTs matched to system voltage and frequency requirements, the PTC line from NexTek ensures safe, continuous operation of sensitive RF equipment exposed to lightning, ESD, or other surge threats.
PTC Fixed Gas Discharge Tube Key Features and Benefits:
- DC-pass capability for active RF lines
- Extremely wideband operation (DC to 12.5 GHz)
- Surge suppression via high-reliability gas discharge tube (GDT)
- Excellent return loss and low insertion loss
- Available with multiple connector types to fit diverse system designs
- Compact, weather-sealed configurations for indoor or outdoor use
*example product shown
Connector Types
- N-Type
- TNC
- SMA
- F-Type
- BNC
- MMCX
Frequency Range
- PTC-T Series – DC 512 MHz
- PTC-K Series – DC 1000 MHz
- PTC-S Series – DC 3200 MHz
- PTC-E Series – DC 6000 MHz
- PTC-NF Series – DC 7000 MHz
- PTC-G Series – DC 12000 MHz
Threat Types
- ESD
- LEMP
Design Highlights
- Fixed Gas Discharge Tube
Applications for PTC Fixed Gas Discharge Tube
The PTC Series is ideal for applications where wideband RF protection and DC pass-through are required in a compact, reliable package. Common uses include:
- Lightning and ESD protection for antennas and radio base stations
- Surge protection for satellite and GNSS receivers
- RF line protection in transportation and fleet communication systems
- Defense and tactical communication equipment exposed to harsh environments
PTC Fixed Gas Discharge Tube Products
The PTC Series includes a wide range of arrestor models optimized for different frequencies, connector styles, and operating voltages. Each model provides broadband protection using fixed GDT technology. Below are some of the available products:
- PTCONFONF09S – Nfemale to Nfemale fixed GDT lightning arrestor with DC pass and bidirectional protection, covering DC up to ~3.2 GHz
- PTCONFONF09E – N‑female to N‑female fixed gas discharge tube protector with broadband RF performance, DC–6 GHz, and rugged, waterproof construction
- PTCSAFSAF20G – SMA female to SMA female fixed GDT arrestor with DC pass, 12.5 GHz, high surge capability, and IP67 ingress protection
- PTC-NFF-180 – N‑female to N‑female fixed GDT lightning/ESD protector with broadband RF coverage up to 7 GHz suppression, made for coaxial systems
For full specifications or assistance choosing the right part, visit the Product Finder or contact the NexTek team.
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