English
中文简体TNC Connectors Protective Cap Manufacturer
Product Overview
TNC Protective Caps are purpose-engineered interface covers for TNC plug and jack (receptacle) connectors. While visually similar to BNC protective caps, TNC caps are dimensionally distinct: they must accommodate the TNC connector's larger outer diameter and threaded outer coupling nut, requiring a different retention geometry to avoid stripping or deforming the thread during routine cap installation and removal.
Beyond basic contamination prevention, TNC protective caps for high-value microwave assemblies serve an additional function: they protect the precision-machined thread of the coupling nut from corrosion and mechanical damage during storage and transit. A damaged TNC thread is an expensive failure mode—thread repair is not feasible in the field and connector replacement in a pre-assembled cable harness is time-consuming. Proper cap protection during logistics and storage is therefore a cost-avoidance measure, not merely a housekeeping item.
Key Features
Thread-engaging retention mechanism: unlike snap-fit BNC caps, TNC caps use a short-turn thread or interference fit that positively retains the cap on the coupling nut, preventing loss during transport over rough terrain or in high-vibration storage environments.
Cap interior geometry protects the center contact (pin or socket) from deformation; center contact protection geometry is gender-specific—plug caps and jack caps are not interchangeable.
Material options: glass-filled polyamide (PA66-GF) for mechanical robustness; PTFE-compounded caps for chemical-resistance applications; aluminum or brass machined caps for environments exceeding polymer temperature limits (>120°C continuous).
Color coding available in red, blue, black, yellow, and orange; color identity systems help field technicians quickly distinguish TNC ports from co-located BNC, SMA, or N-type ports on dense panels.
Captive (tethered) cap variant with stainless steel lanyard for field maintenance kits and mobile platforms where individual cap loss would compromise mission readiness.
ESD-dissipative cap variants available for connector protection in electrostatic-sensitive assembly cleanrooms and board-level RF assembly.
Competitive Advantages
Ordering caps and connectors from the same source factory eliminates the common problem of caps that fit loosely (from a generic cap supplier with relaxed tolerances) or caps that are impossible to install without tools (from a supplier using a different dimensional standard). Jingcheng's caps are dimensioned to its own connector production tooling.
Low minimum order quantities for standard cap variants allow customers to order caps alongside a connector order without reaching separate MOQ thresholds, streamlining procurement.
Custom laser marking or hot-stamping of part numbers, port labels, or customer logos available on the cap outer surface for OEM kitting and product branding.
Typical Applications
Transit and long-term storage protection for TNC cable assemblies in military and aerospace logistics
Panel port caps for unused TNC jacks on base station, radar, and test equipment front and rear panels
Protective caps in cable assembly kits shipped to end-user installation sites
Cleanroom and ESD-controlled assembly area connector protection
FAQ
Q: Are TNC caps interchangeable with BNC or N-type caps?
A: No. Each connector series uses a distinct interface geometry. TNC caps are specific to the TNC interface. Using a BNC cap on a TNC connector (or vice versa) risks leaving the center contact unprotected or damaging the outer coupling nut thread. Always specify the connector type when ordering protective caps.
Q: What temperature range do the standard polymer caps support?
A: PA66-GF caps are rated for continuous use from -40°C to +120°C, covering the vast majority of storage and operating environments. For higher-temperature applications (up to +200°C), PTFE-compound or aluminum caps are recommended. Please specify the storage or operating temperature requirement in your inquiry.
Q: Can caps be supplied pre-installed on connectors as part of a packaged assembly?
A: Yes. Jingcheng can supply connectors with protective caps pre-installed as part of a kitted shipment configuration. This service is commonly used by customers who integrate connectors into cable harnesses or equipment and require interface protection immediately after assembly.
|
Temperature Range |
-55～+155℃ |
|
Impedance |
50Ω |
|
Frequency Range |
DC～11GHz |
|
Insulation resistance |
≥5000MΩ |
|
Insertion loss |
≤0.20 dB/1GHz |
|
VSWR |
Straight ≤1.22/3GHz |
|
Right angle |
≤1.30/3GHz |
|
Durability(mating) |
≥500 (cycles) |
