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Coaxial Connectors (RF)

Image Part Number Description / PDF Quantity Rfq
182101-10

182101-10

Connex (Amphenol RF)

CONN UHF PLUG STR SOLDER

2267
132104

132104

Connex (Amphenol RF)

CONN SMA JACK STR 50 OHM SOLDER

560
031-5431-1010

031-5431-1010

Connex (Amphenol RF)

CONN BNC JACK R/A 50 OHM PCB

10
031-80102

031-80102

Connex (Amphenol RF)

CONN BNC PLUG STR 75 OHM CRIMP

0
031-80103

031-80103

Connex (Amphenol RF)

CONN BNC PLUG STR 75 OHM CRIMP

1
112640

112640

Connex (Amphenol RF)

CONN BNC JACK STR 50OHM EDGE MNT

1359
000-27975

000-27975

Connex (Amphenol RF)

CONN MHV PLUG STR 50 OHM SOLDER

110
034-1025-12G

034-1025-12G

Connex (Amphenol RF)

CONN HDBNC PLUG STR 75 OHM CRIMP

75
A-2JA

A-2JA

Connex (Amphenol RF)

CONN AMMC JACK STR 50OHM SMD

5730
920-501J-53P

920-501J-53P

Connex (Amphenol RF)

CONN HD-EFI JACK 50 OHM SMD

157
142176-75

142176-75

Connex (Amphenol RF)

CONN MINI SMB PLUG R/A 75 OHM

0
112275

112275

Connex (Amphenol RF)

CONN BNC JACK STR 75 OHM CRIMP

100
112587

112587

Connex (Amphenol RF)

CONN BNC JACK STR 50 OHM CRIMP

283
930-116J-51P

930-116J-51P

Connex (Amphenol RF)

CONN QMA JACK STR 50 OHM PCB

0
132422RP

132422RP

Connex (Amphenol RF)

CONN RPSMA JACK STR 50OHM SOLDER

0
102-799-04

102-799-04

Connex (Amphenol RF)

CONN 1.0/2.3 PLG STR 50OHM SOLDR

46
172215

172215

Connex (Amphenol RF)

CONN N PLUG R/A 50 OHM SOLDER

0
920-250J-51P

920-250J-51P

Connex (Amphenol RF)

CONN AFI JACK STR 50 OHM SMD

0
082-5378

082-5378

Connex (Amphenol RF)

CONN N JACK STR 50 OHM CRIMP

0
112576

112576

Connex (Amphenol RF)

CONN BNC PLUG STR 75 OHM CRIMP

116

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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