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Coaxial Connectors (RF)

Image Part Number Description / PDF Quantity Rfq
142229

142229

Connex (Amphenol RF)

CONN SMB PLUG STR 50 OHM SOLDER

754
252151-75

252151-75

Connex (Amphenol RF)

CONN MCX JACK STR 75OHM EDGE MNT

895
903-523J-71P

903-523J-71P

Connex (Amphenol RF)

CONN SMB JACK STR 75 OHM PCB

0
031-6578

031-6578

Connex (Amphenol RF)

CONN BNC JACK R/A 50 OHM PCB

258
112806-75

112806-75

Connex (Amphenol RF)

CONN BNC RCPT STR 75OHM EDGE MNT

93
172208

172208

Connex (Amphenol RF)

CONN N JACK STR 50 OHM CRIMP

273
082-6152

082-6152

Connex (Amphenol RF)

CONN N PLUG STR 50 OHM CRIMP

0
172242

172242

Connex (Amphenol RF)

N TYPE STRAIGHT SOLDER JACK FOR

60
082-6101-RFX

082-6101-RFX

Connex (Amphenol RF)

CONN N RCPT STR 50 OHM SOLDER

100
082-346-RFX

082-346-RFX

Connex (Amphenol RF)

CONN N JACK STR 50 OHM CRIMP

29
112356

112356

Connex (Amphenol RF)

CONN BNC PLUG R/A 50 OHM SOLDER

0
222114-10

222114-10

Connex (Amphenol RF)

CONN F JACK STR 75 OHM SOLDER

502
122484

122484

Connex (Amphenol RF)

CONN TNC PLUG STR 50 OHM SOLDER

53
3FA1ENMSJ-C01ES

3FA1ENMSJ-C01ES

Connex (Amphenol RF)

FAKRA SEALED LOW PROFILE STRAIGH

0
SMP-FS-C19

SMP-FS-C19

Connex (Amphenol RF)

SMP STRAIGHT CRIMP PLUG FOR RG-1

50
919-109J-51PX

919-109J-51PX

Connex (Amphenol RF)

CONN MCX RCPT STR 50 OHM PCB

1359
132251

132251

Connex (Amphenol RF)

CONN SMA JACK STR 50 OHM SOLDER

272
031-6290

031-6290

Connex (Amphenol RF)

CONN BNC RCPT STR 50 OHM SOLDER

0
PSMP-MSSB-PCT1R

PSMP-MSSB-PCT1R

Connex (Amphenol RF)

CONN PSMP JACK STR 50 OHM SMD

80
31-5431-2010

31-5431-2010

Connex (Amphenol RF)

CONN BNC JACK R/A 50 OHM PCB

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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