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Coaxial Connectors (RF)

Image Part Number Description / PDF Quantity Rfq
0732512201

0732512201

Woodhead - Molex

CONN SMA JACK R/A 50 OHM PCB

8925
0731340030

0731340030

Woodhead - Molex

RF CONN 4 HOLES 7/16 JACK 50 OHM

75
0733660020

0733660020

Woodhead - Molex

CONN MCX PLUG STR 50 OHM SOLDER

3768
0734036282

0734036282

Woodhead - Molex

CONN FAKRA JACK STR 50 OHM CRIMP

497
0734155740

0734155740

Woodhead - Molex

CONN SMP PLUG STR 50OHM EDGE MNT

0
0731010800

0731010800

Woodhead - Molex

BNC JACK, RA, RECEPTACLE, 75 OHM

0
0732510621

0732510621

Woodhead - Molex

SMA JACK EDGE MNT 50 OHM

349
0732519691

0732519691

Woodhead - Molex

SMA JACK EDGE MNT,IP67, 50 OHM

0
0734153410

0734153410

Woodhead - Molex

CONN MMCX JACK STR 50 OHM SOLDER

0
0734035355

0734035355

Woodhead - Molex

SMB J FAKRA PIN IN PASTE 50 OHM

0
0732511350

0732511350

Woodhead - Molex

CONN SMA JACK STR 50 OHM SMD

25066
0733910292

0733910292

Woodhead - Molex

CONN SMA JACK R/A 50 OHM PCB

0
0732540410

0732540410

Woodhead - Molex

BNC JACK, BLKHD RECEPTACLE

0
0734136481

0734136481

Woodhead - Molex

SSMCX JACK VERTICAL 75 OHMS

0
0733580692

0733580692

Woodhead - Molex

SSMCX R/A PCB TH 6 PORT 50 OHM

0
0731716611

0731716611

Woodhead - Molex

BNC JACK RA PCB TH 75 OHM DC-12G

0
0733581041

0733581041

Woodhead - Molex

MPRF GANG OF 8 JACK SLIDE LATCH

0
0734152391

0734152391

Woodhead - Molex

CONN MCX PLUG R/A 75 OHM SOLDER

0
0731713061

0731713061

Woodhead - Molex

BNC J,R/A BH,BLACK W/BOARD LOCKS

0
0732513900

0732513900

Woodhead - Molex

SMA PLUG, STR, 50 OHM, SF316 CAB

0

Coaxial Connectors (RF)

1. Overview

RF coaxial connectors are electro-mechanical devices designed to transmit radio frequency (RF) signals between components or systems. They maintain signal integrity in coaxial cables by preserving impedance matching and shielding performance. These connectors are critical in telecommunications, aerospace, defense, and test equipment, enabling reliable high-frequency signal transmission up to 110 GHz in modern applications.

2. Main Types and Functional Classification

TypeFunctional FeaturesTypical Applications
BNCBayonet coupling, 50/75 impedance, quick-connectTest instruments, video systems, 10BASE-T Ethernet
N-TypeThreaded coupling, 50 , weatherproofCellular base stations, microwave links, broadcast equipment
SMAThreaded, 0-18 GHz range, compact sizeWi-Fi antennas, GPS modules, RF modules
F-TypeCompression fitting, 75 impedanceCable TV, satellite TV, CATV systems
LCMiniature threaded, low PIM designHigh-density telecom equipment, 5G infrastructure

3. Structure and Components

A typical RF coaxial connector consists of four key elements:

  1. Center Conductor: Precision-machined pin/socket (beryllium copper or phosphor bronze) for signal transmission
  2. Dielectric Insulator: PTFE or ceramic material maintaining 50/75 impedance and spacing
  3. Outer Conductor: Brass or stainless steel shell providing 360 shielding (typical attenuation >80dB)
  4. Connection Mechanism: Threaded (N, SMA), bayonet (BNC), or compression (F-type) interface with anti-rotation features

4. Key Technical Specifications

ParameterDescriptionImportance
Frequency Range0.01-110 GHz (varies by type)Determines maximum usable bandwidth
Impedance50 (standard) or 75 Matches cable/system requirements
VSWR1.2:1 (typical) - 1.5:1 (high-performance)Measures signal reflection efficiency
Insertion Loss0.1-0.5 dB (varies with frequency)Impacts signal strength preservation
Withstanding Voltage500V-3000V ACSafety and insulation capability

5. Application Fields

  • Telecommunications: 5G base stations (N-Type/LC), fiber modems (SC/FC)
  • Military/Aerospace: Radar systems (high-reliability N-Type), avionics (MIL-STD-348 compliant)
  • Test & Measurement: Spectrum analyzers (Precision SMA), oscilloscopes (BNC)
  • Consumer Electronics: Cable TV (F-Type), Wi-Fi routers (RP-SMA)
  • Industrial IoT: Wireless sensors (TNC), RFID readers (MMCX)

6. Leading Manufacturers and Products

ManufacturerKey ProductsSpecial Features
AmphenolSeries 5000 N-TypeIP68 rating, 0-11 GHz
TE ConnectivityDeutsch DMCMilitary-grade vibration resistance
Rosenberger4.3-10 Connector70% smaller than N-Type, 6 GHz
Huber+SuhnerRadiX HybridCombines RF and power in single interface
Southern California RFMini 50High-density SMA alternative

7. Selection Recommendations

Key selection criteria include:

  • Frequency Requirements: BNC ( 4 GHz) vs SMA ( 18 GHz) vs 2.92mm ( 40 GHz)
  • Environmental Factors: Outdoor applications require IP67+ rated N-Type
  • Mechanical Durability: >500 mating cycles for test environments
  • Impedance Matching: 75 for video/cable TV systems
  • Space Constraints: Miniaturized options (MMCX, U.FL) for mobile devices

Case Study: In 5G massive MIMO systems, engineers prefer 4.3-10 connectors over traditional N-Type due to 30% size reduction and improved PIM performance (<-160dBc).

8. Industry Trends

Emerging development directions include:

  • Extreme Frequency: 110 GHz+ connectors for 6G and automotive radar
  • Miniaturization: 1.0mm connectors for wearable IoT devices
  • High-Density Integration: Multi-port arrays with integrated filters
  • Material Innovation: Graphene-enhanced contacts for reduced insertion loss
  • Smart Connectivity: Embedded sensors for real-time VSWR monitoring

Market forecasts indicate a CAGR of 7.2% (2023-2028), driven by 5G expansion and satellite internet demand.

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