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Coaxial Connectors (RF)

Image Part Number Description / PDF Quantity Rfq
112503

112503

Connex (Amphenol RF)

CONN BNC JACK R/A 75 OHM PCB

0
901-10011

901-10011

Connex (Amphenol RF)

CONN SMA PLUG STR 50 OHM SOLDER

0
222144

222144

Connex (Amphenol RF)

CONN F RCPT STR 75 OHM SOLDER

92
031-335

031-335

Connex (Amphenol RF)

CONN BNC PLUG R/A 50 OHM CRIMP

0
122377

122377

Connex (Amphenol RF)

CONN TNC JACK STR 50 OHM CRIMP

50
031-6900

031-6900

Connex (Amphenol RF)

RF CONNECTOR RP-TNC STRAIGHT CRI

0
SMP-MSLD-PCT-10

SMP-MSLD-PCT-10

Connex (Amphenol RF)

CONN SMP RCPT STR 50 OHM SMD

379
000-49000

000-49000

Connex (Amphenol RF)

CONN N RCPT STR 50 OHM SOLDER

98
901-10512-2

901-10512-2

Connex (Amphenol RF)

CONN SMA JACK R/A 50OHM EDGE MNT

385
282100-75

282100-75

Connex (Amphenol RF)

CONN 1.0/2.3 RCPT R/A 75 OHM PCB

343
172173

172173

Connex (Amphenol RF)

CONN N JACK STR 50 OHM CRIMP

106
031-6507

031-6507

Connex (Amphenol RF)

CONN TNC JACK STR 50OHM SOLDER

139
152131

152131

Connex (Amphenol RF)

CONN SMC JACK STR 50 OHM SOLDER

0
122122RP

122122RP

Connex (Amphenol RF)

CONN RP-TNC JACK STR 50OHM CRIMP

119
081-160

081-160

Connex (Amphenol RF)

CONN FME JACK STR 50 OHM CRIMP

33
132147

132147

Connex (Amphenol RF)

CONN SMA RCPT STR 50 OHM SOLDER

2161
132133

132133

Connex (Amphenol RF)

CONN SMA PLUG STR 50 OHM PCB

133
332103

332103

Connex (Amphenol RF)

CONN 4.1/9.5 JCK STR 50OHM SOLDR

0
082-6096-RFX

082-6096-RFX

Connex (Amphenol RF)

CONN N JACK STR 50 OHM SOLDER

500
132225

132225

Connex (Amphenol RF)

CONN SMA JACK R/A 50 OHM PCB

13

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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