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Coaxial Connectors (RF)

Image Part Number Description / PDF Quantity Rfq
112198

112198

Connex (Amphenol RF)

CONN BNC PLUG R/A 50 OHM SOLDER

105
132166

132166

Connex (Amphenol RF)

CONN SMA RCPT STR 50 OHM SOLDER

1274
112700

112700

Connex (Amphenol RF)

CONN BNC PLUG STR 50 OHM CRIMP

167
262114

262114

Connex (Amphenol RF)

CONN MMCX PLUG STR 50OHM PCB

0
031-71011

031-71011

Connex (Amphenol RF)

CONN BNC JACK STR 75 OHM CRIMP

0
172142-11

172142-11

Connex (Amphenol RF)

CONN N PLUG STR 50 OHM CRIMP

86
172266

172266

Connex (Amphenol RF)

CONN N PLUG R/A 50 OHM PUSH

76
172368

172368

Connex (Amphenol RF)

CONN N JACK R/A 50OHM SOLDER

58
332111

332111

Connex (Amphenol RF)

CONN 4.1/9.5 JACK STR 50OHM PUSH

0
3FA1-NFSJ-C04W0

3FA1-NFSJ-C04W0

Connex (Amphenol RF)

FAKRA STRAIGHT CRIMP JACK FOR RG

0
132267

132267

Connex (Amphenol RF)

SMA RIGHT ANGLE JACK, SOLDER CUP

46
112252

112252

Connex (Amphenol RF)

CONN BNC JACK STR 50 OHM CRIMP

331
901-10588

901-10588

Connex (Amphenol RF)

CONN SMA EDGE MOUNT PLUG 50 OM

158
031-5538-1010

031-5538-1010

Connex (Amphenol RF)

CONN BNC JACK R/A 50 OHM PCB

104
031-2318

031-2318

Connex (Amphenol RF)

CONN TNC JACK STR 50 OHM CRIMP

121
172313

172313

Connex (Amphenol RF)

CONN N JACK STR 50 OHM CRIMP

99
031-5849-RFX

031-5849-RFX

Connex (Amphenol RF)

CONN TNC PLUG R/A 50 OHM SOLDER

0
182115

182115

Connex (Amphenol RF)

CONN UHF PLUG STR CRIMP

406
132203-14

132203-14

Connex (Amphenol RF)

CONN SMA R/A PC/PANEL MOUNT

0
132178RP

132178RP

Connex (Amphenol RF)

CONN RPSMA PLUG STR 50OHM SOLDER

439

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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