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中文简体N Connectors Protective Cap Manufacturer
Product Overview
N-type Protective Caps are interface protection accessories scaled to the N-type connector's larger body diameter and threaded coupling nut. Compared to TNC or SMA protective caps, N-type caps must withstand greater mechanical forces in outdoor and industrial environments—their retention system must resist dislodgement under wind load on exposed antenna panels, vibration on vehicle-mounted equipment, and handling during cable assembly and installation in the field.
The N-type connector's widespread use in outdoor infrastructure (base station antennas, CATV distribution networks, outdoor broadcast equipment) means that N-type protective caps are frequently exposed to UV radiation, rain, and temperature cycling that would degrade low-grade polymer materials over time. Jingcheng's N-type protective cap materials are selected for long-term environmental resistance, not simply short-term transit protection.
Key Features
Thread-engaging or interference-fit retention mechanism sized to the N-type coupling nut outer diameter; cap cannot be displaced by standard cable pull or incidental contact.
UV-stabilized polymer body (UV-stabilized PA66 or UV-stabilized polyethylene) for outdoor equipment panels where caps remain installed for extended periods between maintenance cycles.
Weatherproofed cap variants with integrated silicone sealing lip provide a moisture barrier equivalent to IP54 when installed on a jack (receptacle), preventing water ingress into unused port contacts during outdoor storage.
Metal (aluminum and brass) cap options for industrial environments where chemical exposure, abrasion, or impact damage would destroy polymer caps.
Color options: red, blue, black, yellow, white, and orange for multi-port panel identification; custom color compounding available for volume orders.
Captive lanyard variant (stainless wire rope and swage fitting) for tower-climbing and field maintenance scenarios where dropped protective caps create safety hazards.
Competitive Advantages
Single-source procurement: ordering N-type connectors and caps from the same manufacturing source eliminates interface fit uncertainty. Jingcheng's caps are dimensioned against the same coupling nut geometry as its own connector production—guaranteeing consistent fit without requiring customer incoming inspection of cap-to-connector compatibility.
Volume kitting: Jingcheng can pre-kit caps with connectors in assembly-ready packaging (e.g., one cap per connector in a polybag or tray), eliminating separate cap inventory management for cable assembly production lines.
Long-term material traceability: as an ISO14001-certified manufacturer, Jingcheng maintains material records for cap polymer compounds, enabling customers to verify RoHS compliance and halogen-free status for their product environmental compliance documentation.
Typical Applications
Outdoor base station antenna port caps during site installation and between maintenance visits
CATV headend and node unused port protection during network expansion phases
Military antenna system port protection during deployment and redeployment logistics
Broadcast tower RF distribution panel unused port protection
Connector storage and transit protection for N-type cable assemblies in logistics packaging
FAQ
Q: What retention force do the N-type caps provide against accidental removal?
A: Thread-engaging N-type caps require a deliberate rotational pull to remove and resist axial pull forces exceeding 20 N in the standard polymer version and 50 N in the metal version. These figures exceed typical wind load and incidental contact forces on outdoor antenna panels.
Q: Do the weatherproofed cap variants affect the connector mating thread after long-term outdoor installation?
A: Caps are designed with a sacrificial sealing lip that contacts the connector outer coupling nut surface without entering the thread form. Long-term outdoor installations (up to 5 years in typical CATV and base station environments) have not been associated with thread damage or retention degradation in our product qualification testing.
Q: Are N-type and TNC caps interchangeable?
A: No. N-type and TNC connectors have different outer body diameters and thread pitches. Caps are series-specific and must be ordered for the correct connector type. Using an incorrect cap leaves the center contact unprotected.
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Temperature Range |
-55～+155℃(PE Cable -40～+85℃) |
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Impedance |
50Ω, 75Ω |
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Frequency Range |
DC～11GHz |
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Insulation resistance |
≥5000MΩ |
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Insertion loss |
≤0.2dB(6GHz) |
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VSWR |
Straight ≤1.15/6GHz |
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Right angle |
≤1.25/6GHz |
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Durability(mating) |
≥500 (cycles) |
